Map of Washington-Baltimore-Arlington CSA, 2012

The Washington–Baltimore combined statistical area is a

statistical area The federal government of the United States, United States federal government defines and delineates the nation's metropolitan areas for statistical purposes, using a set of standard statistical area definitions. the U.S. Office of Management an ...

consisting of the two overlapping labor-market metropolitan areas of Washington, D.C. and

Baltimore Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was ...

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean t ...

. The region includes Central Maryland,

Northern Virginia Northern Virginia, locally referred to as NOVA or NoVA, comprises several counties and independent cities in the Commonwealth of Virginia in the United States. It is a widespread region radiating westward and southward from Washington, D.C. Wit ...

, three counties in the

Eastern Panhandle of West Virginia The Eastern Panhandle is the eastern of the two panhandles in the U.S. state of West Virginia; the other is the Northern Panhandle. It is a small stretch of territory in the northeast of the state, bordering Maryland and Virginia. Some sourc ...

, and one county in

South Central Pennsylvania South Central Pennsylvania is a region of the U.S. state of Pennsylvania that includes the fourteen counties of Adams, Cumberland, Dauphin, Franklin, Huntingdon, Juniata, Lancaster, Lebanon, Mifflin, Perry, Snyder, and York. Portions of w ...

. It is the most educated, highest-income, and third-largest combined statistical area in the United States, behind only New York–Newark and Los Angeles–Long Beach. The area is designated by the

Office of Management and Budget The Office of Management and Budget (OMB) is the largest office within the Executive Office of the President of the United States (EOP). OMB's most prominent function is to produce the president's budget, but it also examines agency programs, pol ...

(OMB) as the Washington–Baltimore–Arlington, DC–MD–VA–WV–PA Combined Statistical Area. It is composed primarily of two major

Metropolitan statistical area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally incorporated as a city or tow ...

s (MSAs): the Washington–Arlington–Alexandria, DC–VA–MD–WV MSA and the Baltimore–Columbia–Towson, Maryland Metropolitan Statistical Area. In addition, five other smaller urban areas not contiguous to the main urban area but having strong commuting ties with the main area are included in the metropolitan area."OMB BULLETIN NO. 18-04: Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas"
Office of Management and Budget. September 14, 2018. These are: the Hagerstown–Martinsburg, Maryland–West Virginia MSA, the Chambersburg–Waynesboro, Pennsylvania MSA, the Winchester, VA–WV MSA, the California–Lexington Park, Maryland MSA, and the

Easton, Maryland Easton is an incorporated town in and the county seat of Talbot County, Maryland, United States. The population was 15,945 at the 2010 census, with an estimated population in 2019 of 16,671. The primary ZIP Code is 21601, and the secondary ...

micropolitan statistical area (µSA). Some counties, such as

Caroline Caroline may refer to: People *Caroline (given name), a feminine given name * J. C. Caroline (born 1933), American college and National Football League player * Jordan Caroline (born 1996), American (men's) basketball player Places Antarctica * ...

and

King George County King George County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population sits at 26,723. Its county seat is the town of King George. The county's largest employer is the U.S. Naval Surface Warfare Cente ...

, Virginia, are not officially designated by the OMB as members of this metropolitan area, but still consider themselves members anyway. This is mostly due to their proximity to the area, the size of their commuter population, and by the influence of local broadcasting stations. The population of the entire Washington–Baltimore Combined Statistical Area as of the Census Bureau's 2020 data is 9,973,383. The most populous city is Washington, D.C., with a population of 689,545. The most populous county is

Fairfax County, Virginia Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. It is part of Northern Virginia and borders both the city of Alexandria and Arlington County and forms part of the suburban ring of Washington, D. ...

, with a population of 1,150,309.

Components of the combined statistical area

The counties and independent cities and their groupings that comprise the area are listed below with their 2012 population estimates. Central counties/cities (designated as such by OMB) for each MSA are shown in italics. * Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Area (5,860,342)
** Silver Spring–Frederick–Rockville, MD Metropolitan Division (1,244,291) ***

Frederick County, Maryland Frederick County is located in the northern part of the U.S. state of Maryland. At the 2020 U.S. Census, the population was 271,717. The county seat is Frederick. Frederick County is included in the Washington-Arlington-Alexandria, DC-VA-MD- ...

*** ''

Montgomery County, Maryland Montgomery County is the most populous county in the state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010. The county seat and largest municipality is Rockville, although the census-design ...

'' ** Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Division (4,616,051) *** ''

Washington, District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morga ...

'' ***

Calvert County, Maryland Calvert County is located in the U.S. state of Maryland. As of the 2020 census, the population was 92,783. Its county seat is Prince Frederick. The county's name is derived from the family name of the Barons of Baltimore, the proprietors of ...

***

Charles County, Maryland Charles County is a county in Southern Maryland. As of the 2020 census, the population was 166,617. The county seat is La Plata. The county was named for Charles Calvert (1637–1715), third Baron Baltimore. Charles County is part of the W ...

*** ''

Prince George's County, Maryland ) , demonym = Prince Georgian , ZIP codes = 20607–20774 , area codes = 240, 301 , founded date = April 23 , founded year = 1696 , named for = Prince George of Denmark , leader_title = Executive , leader_name = Angela D. Alsobrooks ...

'' *** ''

Arlington County, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...

'' ***

Clarke County, Virginia Clarke County is a county in the Commonwealth of Virginia. As of the 2020 census, the population was 14,783. Its county seat is Berryville. Clarke County is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistic ...

***

Culpeper County, Virginia Culpeper County is a county located along the borderlands of the northern and central region of the Commonwealth of Virginia. As of the 2020 United States Census, the population was 52,552. Its county seat and only incorporated community is Culp ...

***

*** Fauquier County, Virginia ***

Loudoun County, Virginia Loudoun County () is in the northern part of the Commonwealth of Virginia in the United States. In 2020, the census returned a population of 420,959, making it Virginia's third-most populous county. Loudoun County's seat is Leesburg. Loudoun ...

***

Prince William County, Virginia Prince William County is located on the Potomac River in the U.S. state of Virginia. As of the 2020 census, the population sits at 482,204, making it Virginia's second-most populous county. Its county seat is the independent city of Manass ...

***

Woodbridge, Virginia Woodbridge is a census-designated place (CDP) in Prince William County, Virginia, United States, located south of Washington, D.C.. Bounded by the Occoquan and Potomac rivers, Woodbridge had 44,668 residents at the 2020 census. Woodbridge ...

***

Rappahannock County, Virginia Rappahannock County is a county located in the northern Piedmont region of the Commonwealth of Virginia, US, adjacent to Shenandoah National Park. As of the 2020 Census, the population was 7,348. Its county seat is Washington. The name "Rappaha ...

***

Spotsylvania County, Virginia Spotsylvania County is a county in the U.S. state of Virginia. As of the July 2021 estimate, the population was 143,676. Its county seat is Spotsylvania Courthouse. History At the time of European encounter, the inhabitants of the area that b ...

***

Stafford County, Virginia Stafford County is located in the Commonwealth of Virginia. It is a suburb outside of Washington D.C. It is approximately south of D.C. It is part of the Northern Virginia region, and the D.C area. It is one of the fastest growing, and highest- ...

***

Warren County, Virginia Warren County is a U.S. county located in the Commonwealth of Virginia. The 2020 census places Warren County within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area with a population of 40,727. The county seat is ...

***

Alexandria, Virginia Alexandria is an independent city in the northern region of the Commonwealth of Virginia, United States. It lies on the western bank of the Potomac River approximately south of downtown Washington, D.C. In 2020, the population was 159,467. ...

*** ''

Fairfax, Virginia The City of Fairfax ( ), colloquially known as Fairfax City, Downtown Fairfax, Old Town Fairfax, Fairfax Courthouse, FFX, or simply Fairfax, is an independent city (United States), independent city in the Commonwealth (U.S. state), Commonwealth ...

'' *** ''

Falls Church, Virginia Falls Church is an independent city in the Commonwealth of Virginia. As of the 2020 census, the population was 14,658. Falls Church is included in the Washington metropolitan area. Taking its name from The Falls Church, an 18th-century Ch ...

'' ***

Fredericksburg, Virginia Fredericksburg is an independent city located in the Commonwealth of Virginia. As of the 2020 census, the population was 27,982. The Bureau of Economic Analysis of the United States Department of Commerce combines the city of Fredericksburg w ...

*** ''

Manassas, Virginia Manassas (), formerly Manassas Junction, is an independent city in the Commonwealth of Virginia, United States. The population was 42,772 at the 2020 Census. It is the county seat of Prince William County, although the two are separate jurisdi ...

'' *** ''

Manassas Park, Virginia Manassas Park is an independent city in the U.S. state of Virginia. As of the 2020 census, the population was 17,219. Manassas Park is bordered by the city of Manassas and Prince William County. Manassas Park is a part of the Washington-Arl ...

'' ***

Jefferson County, West Virginia Jefferson County is located in the Shenandoah Valley in the Eastern Panhandle of West Virginia. It is the easternmost county of the U.S. state of West Virginia. As of the 2020 census, the population was 57,701. Its county seat is Charles Tow ...

* Baltimore–Columbia–Towson, MD Metropolitan Area (2,753,149)
** ''

City'' ** ''

Anne Arundel County Anne Arundel County (; ), also notated as AA or A.A. County, is located in the U.S. state of Maryland. As of the 2020 United States census, its population was 588,261, an increase of just under 10% since 2010. Its county seat is Annapolis, whi ...

'' ** ''

Baltimore County Baltimore County ( , locally: or ) is the third-most populous county in the U.S. state of Maryland and is part of the Baltimore metropolitan area. Baltimore County (which partially surrounds, though does not include, the independent City ...

'' ** Carroll County **

Harford County Harford County is located in the U.S. state of Maryland. As of the 2020 census, the population was 260,924. Its county seat is Bel Air. Harford County is included in the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area, which is al ...

** '' Howard County'' ** ''

Queen Anne's County Queen Anne's County is located on the Eastern Shore of the U.S. state of Maryland. As of the 2020 census, the population was 49,874. Its county seat and most populous municipality is Centreville. The census-designated place of Stevensvill ...

'' * Hagerstown–Martinsburg, MD–WV Metropolitan Area (256,278) ** ''

Washington County, Maryland Washington County is located in the western part of the U.S. state of Maryland. As of the 2020 census, the population was 154,705. Its county seat is Hagerstown. Washington County was the first county in the United States to be named for th ...

'' ** ''

Berkeley County, West Virginia Berkeley County is located in the Shenandoah Valley in the Eastern Panhandle region of West Virginia in the United States. The county is part of the Hagerstown- Martinsburg, MD- WV Metropolitan Statistical Area. As of the 2020 census, the co ...

'' * Chambersburg–Waynesboro, PA Metropolitan Area (151,275) ** ''

Franklin County, Pennsylvania Franklin County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 155,932 Its county seat is Chambersburg. Franklin County comprises the Chambersburg–Waynesboro, PA Metropolitan Statistical Area, whi ...

'' * Winchester, VA–WV Metropolitan Area (130,907) **

Frederick County, Virginia Frederick County is located in the Commonwealth of Virginia. As of the 2020 census, the population was 91,419. Its county seat is Winchester. The county was formed in 1743 by the splitting of Orange County. It is Virginia's northernmost county ...

** Winchester city, Virginia **

Hampshire County, West Virginia Hampshire County is a County (United States), county in the U.S. state of West Virginia. As of the 2020 United States census, 2020 census, the population was 23,093. Its county seat is Romney, West Virginia, Romney, West Virginia's oldest town ( ...

* California–Lexington Park, MD Metropolitan Area (108,987) ** '' St. Mary's County'' * Easton, MD Micropolitan Area (38,098) ** ''

Talbot County, Maryland Talbot County is located in the heart of the Eastern Shore of Maryland in the U.S. state of Maryland. As of the 2020 census, the population was 37,526. Its county seat is Easton. The county was named for Lady Grace Talbot, the wife of Sir Rob ...

Regional organizations

Metropolitan Washington Council of Governments

Founded in 1957, the

Metropolitan Washington Council of Governments Metropolitan Washington Council of Governments (MWCOG) is an independent, nonprofit association where area leaders address regional issues affecting the District of Columbia, suburban Maryland and Northern Virginia. Metropolitan Washington Council ...

(MWCOG) is a regional organization of 23 Washington-area local governments, as well as area members of the

and

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are ...

state legislatures, the U.S. Senate, and the U.S. House of Representatives. MWCOG provides a forum for discussion and the development of regional responses to issues regarding the environment, transportation, public safety, homeland security, affordable housing, community planning, and economic development. The National Capital Region Transportation Planning Board, a component of MWCOG, is the federally designated

Metropolitan Planning Organization A metropolitan planning organization (MPO) is a federally mandated and federally funded transportation policy-making organization in the United States that is made up of representatives from local government and governmental transportation authoriti ...

for the metropolitan Washington area.

Baltimore Metropolitan Council

The Baltimore Metropolitan Council is the equivalent organization for the Baltimore portion of the combined Baltimore–Washington metropolitan area. The BMC, which was created in 1992 as the successor to the Regional Planning Council and Baltimore Regional Council of Governments, consists of the Baltimore region's elected executives, representing Baltimore City and Anne Arundel, Baltimore, Carroll, Harford and Howard counties.About BMC – Baltimore Metropolitan Council
The Baltimore Regional Transportation Board is the federally recognized Metropolitan Planning Organization for transportation planning in the Baltimore region.

List of principal cities

Baltimore area

Baltimore, Maryland Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore wa ...

Aberdeen, Maryland Aberdeen is a city located in Harford County, Maryland, United States, northeast of Baltimore. The population was 16,254 at the 2020 United States Census. Aberdeen is the largest municipality in Harford County. Aberdeen is part of the Baltimor ...

Annapolis, Maryland Annapolis ( ) is the capital city of the U.S. state of Maryland and the county seat of, and only incorporated city in, Anne Arundel County. Situated on the Chesapeake Bay at the mouth of the Severn River, south of Baltimore and about east ...

Arbutus, Maryland Arbutus is an unincorporated community and a census-designated place in Baltimore County, Maryland, United States. The population was 20,483 at the 2010 census. The census area also contains the communities of Halethorpe and Relay, in which all ...

Bel Air, Maryland The town of Bel Air is the county seat of Harford County, Maryland. According to the 2020 United States census, the population of the town was 10,661. History Bel Air's identity has gone through several incarnations since 1780. Aquilla Scott, w ...

Brooklyn, Maryland Brooklyn is one of the southernmost neighborhoods in Baltimore, Maryland. It is located near Anne Arundel County along Governor Ritchie Highway which is also Maryland Route 2. Its main roads are South Hanover Street, (formerly First Street - be ...

Brooklyn Park, Maryland Brooklyn Park is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. The population was 14,373 at the 2010 census. Geography Brooklyn Park is located at (39.224857, −76.612655) on the northern edge of Anne Arund ...

Catonsville, Maryland Catonsville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 41,567 at the 2010 census. The community lies to the west of Baltimore along the city's border. Catonsville contains the majority of th ...

Cockeysville, Maryland Cockeysville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 20,776 at the 2010 census. History Cockeysville was named after the Cockey family who helped establish the town. Thomas Cockey (1676 ...

Columbia, Maryland Columbia is a census-designated place in Howard County, Maryland. It is one of the principal communities of the Baltimore–Washington metropolitan area. It is a planned community consisting of 10 self-contained villages. Columbia began wit ...

Curtis Bay, Maryland Curtis Bay is a residential / commercial / industrial neighborhood in the southern portion of the City of Baltimore, Maryland, United States. The neighborhood is on steep sloping heights, about four city blocks wide (west to east) and fifteen blo ...

Dundalk, Maryland Dundalk ( or ) is an unincorporated community and census-designated place in Baltimore County, Maryland, Baltimore County, Maryland, United States. The population was 67,796 at the 2020 census. In 1960 and 1970, Dundalk was the largest uni ...

* Eldersburg, Maryland *

Elkridge, Maryland Elkridge is an unincorporated community and census-designated place (CDP) in Howard County, Maryland, United States. The population was 15,593 at the 2010 census. Founded early in the 18th century, Elkridge is adjacent to two other counties, A ...

Ellicott City, Maryland Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the m ...

Essex, Maryland Essex is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. Essex has a long history dating back to 1909. The population was 39,262 at the 2010 census and is growing in population each year. The t ...

Fullerton, Maryland Fullerton is an unincorporated community (part of northern Overlea) in Baltimore County, Maryland, United States. The area is often considered part of Nottingham, despite being part of Overlea. Fullerton residents have either 21236 or ...

Glen Burnie, Maryland Glen Burnie is an unincorporated town and census-designated place (CDP) in Anne Arundel County, Maryland, United States. It is a suburb of Baltimore. The population of Glen Burnie was 67,639 at the 2010 census. History In 1812, Elias Glenn, a di ...

Halethorpe, Maryland Halethorpe is an unincorporated community in Baltimore County, Maryland, United States. The community is considered to be a sub-section of Arbutus by the United States Census Bureau. It is bordered by the main portion of Arbutus to the north, Balt ...

Linthicum, Maryland Linthicum is a census-designated place (CDP) and unincorporated community in Anne Arundel County, Maryland, United States. The population was 10,324 at the 2010 census. It is located directly north of Baltimore–Washington International Thurgood ...

* Lutherville-Timonium, Maryland *

Middle River, Maryland Middle River is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. The population was 33,203 at the 2020 census. A Middle River Train Station first appeared on the 1877 G.M. Hopkins & Co Baltimore ...

North Laurel, Maryland North Laurel is a census-designated place (CDP) in Howard County, Maryland, United States. The published population was 4,474 at the 2010 census. This population was substantially less than the CDP's population in 2000, and was the result of an er ...

Owings Mills, Maryland Owings Mills is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. It is a suburb of Baltimore. Per the 2020 census, the population was 35,674. Owings Mills is home to the northern terminus of ...

Overlea, Maryland Overlea is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. The population was 12,275 at the 2010 census. Students attend Overlea High School. Area roads include Belair Road ( U.S. Route 1) and K ...

Parkville, Maryland Parkville is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. As of the 2010 census, the population was 30,734. Geography According to the United States Census Bureau, the CDP has a total area ...

Pasadena, Maryland Pasadena is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. The population was 24,287 at the 2010 census. The areas of Lake Shore, Riviera Beach and Pasadena are collectively referred to as Pasadena by residen ...

Perry Hall, Maryland Perry Hall is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. The population was 28,474 at the 2010 census. It is a suburb of Baltimore. Geography Perry Hall is located at . According to the U ...

Pikesville, Maryland Pikesville is a census-designated place (CDP) in Baltimore County, Maryland, United States. Pikesville is just northwest of the Baltimore city limits. It is the northwestern suburb closest to Baltimore. The population was 30,764 at the 2010 cens ...

Randallstown, Maryland Randallstown is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. It is named after Christopher and Thomas Randall, two 18th-century tavern-keepers. At that time, Randallstown was a tollgate cro ...

Reisterstown, Maryland Reisterstown is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. As of the 2010 census, it had a population of 25,968. Founded by German immigrant John Reister in 1758, Reisterstown is located ...

Savage, Maryland Savage is an unincorporated community and census-designated place located in Howard County, Maryland, United States, approximately south of Baltimore and north of Washington, D.C. It is situated close to the city of Laurel and to the planne ...

Severna Park, Maryland Severna Park is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. Severna Park is part of the Baltimore-Washington Metropolitan Area, and is located approximately north of Annapolis, south of Baltimore and east ...

Towson, Maryland Towson () is an unincorporated community and a census-designated place in Baltimore County, Maryland, United States. The population was 55,197 as of the 2010 census. It is the county seat of Baltimore County and the second-most populous unincor ...

Westminster, Maryland Westminster is a city in northern Maryland, United States. It is the seat of Carroll County. The city's population was 18,590 at the 2010 census. Westminster is an outlying community within the Baltimore-Towson, MD MSA, which is part of a great ...

* Woodlawn, Maryland

Washington area

Bethesda, Maryland Bethesda () is an unincorporated, census-designated place in southern Montgomery County, Maryland. It is located just northwest of Washington, D.C. It takes its name from a local church, the Bethesda Meeting House (1820, rebuilt 1849), which ...

Bowie, Maryland Bowie () is a city in Prince George's County, Maryland, United States. Per the 2020 census, the population was 58,329. Bowie has grown from a small railroad stop to the largest municipality in Prince George's County, and the fifth most populous c ...

Chevy Chase, Maryland Chevy Chase () is the name of both a town and an unincorporated census-designated place (Chevy Chase (CDP), Maryland) that straddle the northwest border of Washington, D.C. and Montgomery County, Maryland, United States. Several settlements in t ...

College Park, Maryland College Park is a city in Prince George's County, Maryland, United States, and is approximately four miles (6.4 km) from the northeast border of Washington, D.C. The population was 34,740 at the 2020 United States Census. It is best known ...

Frederick, Maryland Frederick is a city in and the county seat of Frederick County, Maryland. It is part of the Baltimore–Washington Metropolitan Area. Frederick has long been an important crossroads, located at the intersection of a major north–south Native ...

Gaithersburg, Maryland Gaithersburg ( ), officially the City of Gaithersburg, is a city in Montgomery County, Maryland, United States. At the time of the 2020 U.S. Census, Gaithersburg had a population of 69,657, making it the ninth-largest location in the state. Gai ...

Germantown, Maryland Germantown is an urbanized census-designated place in Montgomery County, Maryland, United States. With a population of 91,249 as of 2020 U.S. Decennial Census, Germantown is the third most populous place in Maryland, after the city of Baltimore ...

Laurel, Maryland Laurel is a city in Maryland, United States, located midway between Washington and Baltimore on the banks of the Patuxent River. While the city limits are entirely in northern Prince George's County, outlying developments extend into Anne Arunde ...

Potomac, Maryland Potomac () is a census-designated place (CDP) in Montgomery County, Maryland, United States, named after the nearby Potomac River. Potomac is the seventh most educated small town in America, based on percentage of residents with postsecondary deg ...

Rockville, Maryland Rockville is a city that serves as the county seat of Montgomery County, Maryland, and is part of the Baltimore–Washington metropolitan area. The 2020 census tabulated Rockville's population at 67,117, making it the fifth-largest community in ...

Silver Spring, Maryland Silver Spring is a census-designated place (CDP) in southeastern Montgomery County, Maryland, United States, near Washington, D.C. Although officially unincorporated, in practice it is an edge city, with a population of 81,015 at the 2020 ce ...

Upper Marlboro, Maryland Upper Marlboro, officially the Town of Upper Marlboro, is the seat of Prince George's County, Maryland. Aso of the 2020 census, the population was 652. although Greater Upper Marlboro is many times larger. Etymology Upper Marlboro was establ ...

Annandale, Virginia Annandale () is a census-designated place (CDP) in Fairfax County, Virginia.Arlington, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...

Ashburn, Virginia Ashburn is a census-designated place (CDP) in Loudoun County, Virginia, United States. At the 2010 United States Census, its population was 43,511, up from 3,393 twenty years earlier. It is northwest of Washington, D.C., and part of the Washi ...

Chantilly, Virginia Chantilly is a census-designated place (CDP) in western Fairfax County, Virginia, Fairfax County, Virginia. The population was 24,301 as of the 2020 census. Chantilly is named after an early-19th-century mansion and farm, which in turn took the ...

Great Falls, Virginia Great Falls is a census-designated place (CDP) in Fairfax County, Virginia, United States. The population as of the 2010 census was 15,427, an increase of 80.5% from the 2000 census. History Colonial farm settlements began to form in the area a ...

Herndon, Virginia Herndon is a town in Fairfax County, Virginia, in the Washington, D.C. metropolitan area of the United States. The population was 23,292 at the 2010 census. In 2020, the population was estimated to be 24,532, which makes it the largest of three i ...

Langley, Virginia Langley is an unincorporated community in the census-designated place of McLean in Fairfax County, Virginia, United States. Langley is often used as a metonym for the Central Intelligence Agency (CIA), as it is home to its headquarters, the Geo ...

Leesburg, Virginia Leesburg is a town in the state of Virginia, and the county seat of Loudoun County. Settlement in the area began around 1740, which is named for the Lee family, early leaders of the town and ancestors of Robert E. Lee. Located in the far northeas ...

Massaponax, Virginia Massaponax is an unincorporated community of Spotsylvania County, Virginia. The name Massaponax comes from a native American village that existed before and during the early colonization of Virginia. It means "corn as tall as man". Geography Mass ...

McLean, Virginia McLean ( ) is an unincorporated community and census-designated place (CDP) in Fairfax County in Northern Virginia. McLean is home to many diplomats, military, members of Congress, and high-ranking government officials partially due to its prox ...

* Mt. Vernon, Virginia *

Reston, Virginia Reston is a census-designated place in Fairfax County, Virginia and a principal city of the Washington metropolitan area. As of the 2020 U.S. Census, Reston's population was 63,226. Founded in 1964, Reston was influenced by the Garden City move ...

Springfield, Virginia Springfield is a census-designated place (CDP) in Fairfax County, Virginia, United States. The Springfield CDP is recognized by the U.S. Census Bureau with a population of 30,484 as of the 2010 census. Homes and businesses in bordering CDPs includ ...

Tysons, Virginia Tysons, also known as Tysons Corner, is a census-designated place (CDP) in Fairfax County, Virginia, United States, developed from the corner of Chain Bridge Road ( SR 123) and the Leesburg Pike ( SR 7). Located in Northern Virginia between the ...

Vienna, Virginia Vienna () is a town in Fairfax County, Virginia, United States. As of the 2020 U.S. census, Vienna has a population of 16,473. Significantly more people live in ZIP codes with the Vienna postal addresses (22180, 22181, and 22182), bordered approx ...

Charles Town, West Virginia Charles Town is a city in Jefferson County, West Virginia, United States, and is also the county seat. The population was 5,259 at the 2010 census. It is named for its founder Charles Washington, youngest brother of President George Washington. ...

Martinsburg, West Virginia Martinsburg is a city in and the seat of Berkeley County, West Virginia, in the tip of the state's Eastern Panhandle region in the lower Shenandoah Valley. Its population was 18,835 in the 2021 census estimate, making it the largest city in the E ...

Economy

Primary industries

Biotechnology

Not limited to its proximity to the

National Institutes of Health The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the lat ...

in Bethesda, Maryland's Washington suburbs are a major center for

biotechnology Biotechnology is the integration of natural sciences and engineering sciences in order to achieve the application of organisms, cells, parts thereof and molecular analogues for products and services. The term ''biotechnology'' was first used ...

. Prominent local biotechnology companies include

MedImmune MedImmune, LLC was a wholly owned subsidiary of AstraZeneca before February 14, 2019, when it was announced that the MedImmune name and branding would be discontinued in favor of AstraZeneca. MedImmune was founded in 1988 as Molecular Vaccines, ...

, United Therapeutics, The Institute for Genomic Research,

Human Genome Sciences Human Genome Sciences (HGS) was a biopharmaceutical corporation founded in 1992 by Craig Venter, Alan Walton and Wally Steinberg. It uses the human DNA sequence to develop protein and antibody drugs. It had drugs under development to treat suc ...

and the

Howard Hughes Medical Institute The Howard Hughes Medical Institute (HHMI) is an American non-profit medical research organization based in Chevy Chase, Maryland. It was founded in 1953 by Howard Hughes, an American business magnate, investor, record-setting pilot, engineer, fi ...

Defense contracting

Many defense contractors are based in Northern Virginia and Montgomery County, Maryland to be close to

the Pentagon The Pentagon is the headquarters building of the United States Department of Defense. It was constructed on an accelerated schedule during World War II. As a symbol of the U.S. military, the phrase ''The Pentagon'' is often used as a metony ...

in Arlington. Local defense contractors include

Lockheed Martin The Lockheed Martin Corporation is an American aerospace, arms, defense, information security, and technology corporation with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It ...

, the largest, as well as

Northrop Grumman Northrop Grumman Corporation is an American multinational aerospace and defense technology company. With 90,000 employees and an annual revenue in excess of $30 billion, it is one of the world's largest weapons manufacturers and military tech ...

General Dynamics General Dynamics Corporation (GD) is an American publicly traded, aerospace and defense corporation headquartered in Reston, Virginia. As of 2020, it was the fifth-largest defense contractor in the world by arms sales, and 5th largest in the Uni ...

, BAE Systems Inc.,

Computer Sciences Corporation Computer Sciences Corporation (CSC) was an American multinational corporation that provided information technology (IT) services and professional services. On April 3, 2017, it merged with the Enterprise Services line of business of HP Ente ...

(CSC),

Booz Allen Hamilton Booz Allen Hamilton Holding Corporation (informally Booz Allen) is the parent of Booz Allen Hamilton Inc., an American management and information technology consulting firm, headquartered in McLean, Virginia, in Greater Washington, D.C., with 8 ...

Leidos Leidos, formerly known as Science Applications International Corporation (SAIC), is an American defense, aviation, information technology (Lockheed Martin IS&GS), and biomedical research company headquartered in Reston, Virginia, that provides ...

Science Applications International Corporation Science Applications International Corporation (SAIC), Inc. is an American technology company headquartered in Reston, Virginia that provides government services and information technology support. History The original SAIC was created in 19 ...

(SAIC), and

Orbital Sciences Corporation Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...

Notable company headquarters in the region

''Numbers denote

Fortune 500 The ''Fortune'' 500 is an annual list compiled and published by ''Fortune (magazine), Fortune'' magazine that ranks 500 of the largest United States Joint-stock company#Closely held corporations and publicly traded corporations, corporations by ...

ranking.''

Maryland

Baltimore area: *

Advertising.com AOL (stylized as Aol., formerly a company known as AOL Inc. and originally known as America Online) is an American web portal and online service provider based in New York City. It is a brand marketed by the current incarnation of Yahoo! Inc. ...

(

) *

Allegis Group Allegis Group, Inc. is an international talent management firm headquartered in Hanover, Maryland, USA. As of 2018, it had in revenue, and 19,000 employees. It ranks fourth in the world after Adecco, Randstad and Manpower Inc. History Founded ...

(

Hanover Hanover (; german: Hannover ; nds, Hannober) is the capital and largest city of the German state of Lower Saxony. Its 535,932 (2021) inhabitants make it the 13th-largest city in Germany as well as the fourth-largest city in Northern Germany ...

) *

Black & Decker Black+Decker Inc. is an American manufacturer of power tools, accessories, hardware, home improvement products, home appliances and fastening systems headquartered in Towson, Maryland, north of Baltimore, Maryland, USA, where the company was o ...

(

Towson Towson () is an unincorporated community and a census-designated place in Baltimore County, Maryland, United States. The population was 55,197 as of the 2010 census. It is the county seat of Baltimore County and the second-most populous unincorp ...

) *

Ciena Ciena Corporation is an American telecommunications networking equipment and software services supplier based in Hanover, Maryland. The company has been described by ''The Baltimore Sun'' as the "world's biggest player in optical connectivity." ...

Corporation (

) *

Colfax Corporation Enovis (formerly Colfax Corporation) is a medical technology company, with a particular focus in orthopedics. Headquartered in Wilmington, Delaware, the company is listed on the NYSE as ENOV. The company has over 5,000 employees operating at ...

( Annapolis Junction) *

Constellation Energy Constellation Energy Corporation () is an energy company headquartered in Baltimore, Maryland, United States. The company provides electric power, natural gas, and energy management services. It has approximately two million customers across th ...

(

) *

Corporate Office Properties Trust Corporate Office Properties Trust is a real estate investment trust that invests in office buildings, mostly in the suburbs of the Washington, D.C. metropolitan area. It primarily leases to the U.S. government or companies in the arms industry. ...

(

Columbia Columbia may refer to: * Columbia (personification), the historical female national personification of the United States, and a poetic name for America Places North America Natural features * Columbia Plateau, a geologic and geographic region i ...

) * The Cordish Companies (

) *

CoverGirl CoverGirl is an American cosmetics brand founded in Maryland, United States, by the Noxzema Chemical Company. It was acquired by Procter & Gamble in 1989 and later acquired by Coty, Inc. in 2016. The Noxell Company advertised this cosmetics li ...

( Hunt Valley) *

Fila Fila Holdings Corp. is a sportswear brand of shoes and apparel. The company was founded by Ettore and Giansevero Fila in 1911 in Coggiola, near Biella, Piedmont, Italy. In 2003, it was sold to United States-based Sports Brand International. ...

USA ( Sparks) *

Firaxis Games Firaxis Games, Inc. is an American video game developer based in Sparks, Maryland. The company was founded in May 1996 by Sid Meier, Jeff Briggs and Brian Reynolds following their departure from MicroProse, Meier's earlier venture. They were ...

( Sparks) *

Legg Mason Legg Mason was an American investment management and asset management firm headquartered in Baltimore, founded in 1899 and acquired by Franklin Templeton Investments as of July 2020. As of December 31, 2019, the company had $730.8 billion in as ...

(

) * McCormick & Company ( Hunt Valley) ''482'' *

MICROS Systems Micros Systems, Inc. (styled lowercase in its logo), incorporated in 1978, was a computer software company. Micros is now owned by Oracle Corporation and renamed Oracle Food and Beverage and Oracle Hospitality (two of the global business units at ...

(

) *

Millennial Media One by AOL, formerly known as Millennial Media, is an advertising company that places display ads on mobile devices (mobile marketing). History One by AOL was founded as Millennial Media in May 2006 by Paul Palmieri and Chris Brandenburg. The ...

(

) *

Nielsen Audio Nielsen Audio (formerly Arbitron) is a consumer research company in the United States that collects listener data on radio broadcasting audiences. It was founded as the American Research Bureau by Jim Seiler in 1949 and became national by merging ...

(

) * Pandora Jewelry USA (

) *

T. Rowe Price T. Rowe Price Group, Inc. is an American publicly owned global investment management firm that offers funds, subadvisory services, separate account management, and retirement plans and services for individuals, institutions, and financial inter ...

(

) ''447'' *

Transamerica Corporation The Transamerica Corporation is an American holding company for various life insurance companies and investment firms operating primarily in the United States, offering life and supplemental health insurance, investments, and retirement services. ...

(

) *

Sinclair Broadcast Group Sinclair Broadcast Group, Inc. (SBG) is a publicly traded American telecommunications conglomerate that is controlled by the descendants of company founder Julian Sinclair Smith. Headquartered in the Baltimore suburb of Cockeysville, Maryland, ...

( Hunt Valley) ''465'' *

Sourcefire Sourcefire, Inc was a technology company that developed network security hardware and software. The company's Firepower network security appliances were based on Snort, an open-source intrusion detection system (IDS). Sourcefire was acquired ...

(

) *

Sylvan Learning Sylvan Learning, Inc. (formerly Sylvan Learning Corporation) consists of franchised and corporate supplemental learning centers which provide personalized instruction in reading, writing, mathematics, study skills, homework support, and test pre ...

(

) * Under Armour (

) * W.R. Grace & Co. (

) * The Whiting-Turner Contracting Co. (

) Washington area: * 2U (company) (

Lanham, Maryland Lanham is an unincorporated community and census-designated place in Prince George's County, Maryland. As of the 2020 United States Census it had a population of 11,282. The New Carrollton station (the terminus of the Washington Metro's Orange L ...

) * ASRC Aerospace Corporation (

Greenbelt, Maryland Greenbelt is a city in Prince George's County, Maryland, United States, and a suburb of Washington, D.C. At the 2020 census, the population was 24,921. Greenbelt is the first and the largest of the three experimental and controversial New Dea ...

) *

Bethesda Softworks Bethesda Softworks LLC is an American video game publisher based in Rockville, Maryland. The company was founded by Christopher Weaver in 1986 as a division of Media Technology Limited, and in 1999 became a subsidiary of ZeniMax Media. In ...

( Rockville) *

Clark Construction Clark Construction, also referred to as Clark Construction Group, LLC, is a construction firm headquartered in Bethesda, Maryland, and founded in 1906. The company had 2018 annual revenue of more than $5 billion, and is one of the largest commerc ...

( Bethesda) *

Choice Hotels Choice Hotels International, Inc. is an American multinational hospitality company based in Rockville, Maryland. The company, which is one of the largest hotel chains in the world, owns several hotel brands ranging from upscale to economy. As o ...

( Rockville) *

Coventry Health Care Coventry Health Care, Inc. was a health insurer in the United States. It had 3.7 million medical members, 1.5 million Medicare Part D members, and 900,000 Medicaid members. In May 2013, the company was acquired by Aetna for $5.7 billion. Histor ...

( Bethesda) *

EagleBank EagleBank is a community bank headquartered in Bethesda, Maryland, with assets of more than $10 billion, with operations in the Washington, D.C. metropolitan area. EagleBank conducts full service commercial banking through small footprint of 20 ...

( Bethesda) *

Enviva Enviva is the world’s largest producer of wood pellets, a renewable alternative to coal. The company has also been the subject of controversy regarding its sustainability with an environmental group's analysis suggesting Enviva is responsible ...

( Bethesda) *

Federal Realty Investment Trust Federal Realty Investment Trust is a real estate investment trust that invests in shopping centers in the Northeastern United States, the Mid-Atlantic states, California, and South Florida. Investments As of December 31, 2021, the company owned ...

( Rockville) *

GEICO The Government Employees Insurance Company (GEICO ) is a private American auto insurance company with headquarters in Chevy Chase, Maryland. It is the second largest auto insurer in the United States, after State Farm. GEICO is a wholly owne ...

(

Chevy Chase Cornelius Crane "Chevy" Chase (; born October 8, 1943) is an American comedian, actor and writer. He became a key cast member in the first season of '' Saturday Night Live'', where his recurring ''Weekend Update'' segment became a staple of the ...

) *

Host Hotels & Resorts Host Hotels & Resorts, Inc. is an American real estate investment trust that invests in hotels. As of February 19, 2021, the company owned 80 upscale hotels containing approximately 46,500 rooms in the United States, Brazil, and Canada. History I ...

( Bethesda) ''472'' *

Hughes Network Systems Hughes Network Systems, LLC is a wholly owned subsidiary of EchoStar. It is headquartered in Germantown, Maryland and provides satellite internet service. HughesNet has over 1.3 million subscribers in the Americas. History Hughes Communications ...

(

Germantown Germantown or German Town may refer to: Places Australia * Germantown, Queensland, a locality in the Cassowary Coast Region United States * Germantown, California, the former name of Artois, a census-designated place in Glenn County * G ...

) * Inovalon (

) * JBG Smith (

) *

( Bethesda) ''49'' *

Marriott International Marriott International, Inc. is an American multinational company that operates, franchises, and licenses lodging including hotel, residential, and timeshare properties. It is headquartered in Bethesda, Maryland. The company was founded by ...

( Bethesda) ''293'' *

(

Gaithersburg Gaithersburg ( ), officially the City of Gaithersburg, is a city in Montgomery County, Maryland, United States. At the time of the 2020 U.S. Census, Gaithersburg had a population of 69,657, making it the ninth-largest location in the state. Ga ...

) *

New Enterprise Associates New Enterprise Associates (NEA) is an American-based venture capital firm. NEA focuses investment stages ranging from seed stage through growth stage across an array of industry sectors. With ~$25 billion in committed capital, NEA is one of the w ...

(

) *

Novavax Novavax, Inc. is an American biotechnology company based in Gaithersburg, Maryland that develops vaccines to counter serious infectious diseases. Prior to 2020, company scientists developed experimental vaccines for influenza and respiratory sy ...

(

) * Radio One ( Lanham) *

Ritz-Carlton The Ritz-Carlton Hotel Company, LLC is an American multinational company that operates the luxury hotel chain known as The Ritz-Carlton. The company has 108 luxury hotels and resorts in 30 countries and territories with 29,158 rooms, in addi ...

(

) *

Travel Channel Travel Channel (stylized as Trvl Channel since 2018) is an American pay television channel owned by Warner Bros. Discovery, which had previously owned the channel from 1997 to 2007. The channel is headquartered in New York, New York, United S ...

(

) * TV One ( Silver Spring) * United Therapeutics ( Silver Spring)

Washington, D.C.

&pizza &pizza (pronounced "And Pizza") is an American fast casual pizza restaurant chain, with 36 locations in Washington, D.C., Maryland, Virginia, New York, New Jersey, Pennsylvania and Florida. The restaurant sells personal and customizable oblong-s ...

* APCO Worldwide *

Atlantic Media Atlantic Media is an American print and online media company owned by David G. Bradley and based in the Watergate in Washington, D.C. It publishes '' The Atlantic,'' a print and online publication that also holds themed events; and offers busines ...

Black Entertainment Television Black Entertainment Television (acronym BET) is an American basic cable channel targeting African-American audiences. It is owned by the CBS Entertainment Group unit of Paramount Global via BET Networks and has offices in New York City, Los ...

* Blackboard Inc. *

Bluemercury Bluemercury is a chain of American beauty stores founded in 1999 by Marla Malcolm Beck and Barry Beck in Georgetown, Washington, D.C. The stores sell cosmetics, as well as in-store facials and spa treatments. In addition to selling products from o ...

Carlyle Group The Carlyle Group is a multinational private equity, alternative asset management and financial services corporation based in the United States with $376 billion of assets under management. It specializes in private equity, real assets, and ...

* Chemonics *

Cogent Communications Cogent Communications is a multinational internet service provider based in the United States. Cogent's primary services consist of Internet access and data transport, offered on a fiber optic, IP data-only network, along with colocation in data ...

CoStar Group CoStar Group, Inc. is a Washington, DC-based provider of information, analytics and marketing services to the commercial property industry in the United States, Canada, the United Kingdom, France, Germany, and Spain. Founded in 1987 by Andrew C. ...

Danaher Corporation Danaher Corporation is an American globally diversified conglomerate with its headquarters in Washington, D.C. The company designs, manufactures, and markets professional, medical, industrial, and commercial products and services. The company' ...

''239'' *

Fannie Mae The Federal National Mortgage Association (FNMA), commonly known as Fannie Mae, is a United States government-sponsored enterprise (GSE) and, since 1968, a publicly traded company. Founded in 1938 during the Great Depression as part of the N ...

''53'' *

FiscalNote FiscalNote Holdings, Inc., or commonly FiscalNote, is a publicly traded software, data, and media company headquartered in Washington, D.C. The company was founded by Timothy Hwang, Gerald Yao, and Jonathan Chen in 2013. FiscalNote provides softw ...

* Framebridge *

Gallup Gallup may refer to: * Gallup, Inc., a firm founded by George Gallup, well known for its opinion poll * Gallup (surname), a surname *Gallup, New Mexico, a city in New Mexico, United States ** Gallup station, an Amtrak train in downtown Gallup, New ...

Mapbox Mapbox is an American provider of custom online maps for websites and applications such as Foursquare, Lonely Planet, the ''Financial Times'', The Weather Channel, Instacart Inc. and Snapchat. Since 2010, it has rapidly expanded the niche of c ...

Morning Consult Morning Consult is a global decision intelligence company established in 2014. It was named one of the fastest growing technology companies in North America by Deloitte in both 2018 and 2019 and was valued at more than one billion dollars in Jun ...

National Geographic Society The National Geographic Society (NGS), headquartered in Washington, D.C., United States, is one of the largest non-profit scientific and educational organizations in the world. Founded in 1888, its interests include geography, archaeology, ...

NGP VAN NGP VAN, Inc. is an American privately owned voter database and web hosting service provider used by the Democratic Party, Democratic campaigns, and other non-profit organizations authorized by the Democratic Party. The platform or service is used ...

Pepco Holdings Pepco Holdings was a holding company incorporated in February 2001 for the purpose of effecting the acquisition of Conectiv Power Delivery by Potomac Electric Power Company (better known as "Pepco"). The acquisition was completed on August 1, 200 ...

''279'' * Social Tables *

The Advisory Board Company The Advisory Board Company was a consulting firm focusing on health care organizations and educational institutions. It began in 1979 in Washington, DC. Its educational business was spun off and the remaining company was acquired by Optum in 2017. ...

The Washington Post Company Graham Holdings Company (formerly The Washington Post Company) is a diversified American conglomerate holding company. Headquartered in Arlington County, Virginia, and incorporated in Delaware, it was formerly the owner of ''The Washington Post ...

Vox Media Vox Media, Inc. is an American mass media company based in Washington, D.C., and New York City. The company was established in November 2011 by Jim Bankoff and Trei Brundrett to encompass ''SB Nation'' (a sports blog network founded in 2005 b ...

XM Satellite Radio XM Satellite Radio (XM) was one of the three satellite radio (SDARS) and online radio services in the United States and Canada, operated by Sirius XM, Sirius XM Holdings. It provided pay-for-service radio, analogous to subscription cable televisi ...

Northern Virginia

AES Corporation The AES Corporation is an American utility and power generation company. It owns and operates power plants, which it uses to generate and sell electricity to end users and intermediaries like utilities and industrial facilities. AES is headquart ...

( Arlington) ''194'' * Amazon ( Crystal City) *

Appian Corporation Appian Corporation is a cloud computing and enterprise software company headquartered in McLean, Virginia, part of the Dulles Technology Corridor. The company sells a platform as a service (PaaS) for building enterprise software applications. It ...

( Tysons Corner) *

AvalonBay Communities AvalonBay Communities, Inc. is a publicly traded real estate investment trust that invests in apartments. As of January 31, 2021, the company owned 79,856 apartment units in New England, the New York City metropolitan area, the Washington, D.C. ...

( Arlington) * Airbus North America ( Herndon) * BAE Systems Inc. ( Arlington) *

Bechtel Bechtel Corporation () is an American engineering, procurement, construction, and project management company founded in San Francisco, California, and headquartered in Reston, Virginia. , the '' Engineering News-Record'' ranked Bechtel as the se ...

( Reston) * Bloomberg Industry Group ( Arlington) *

Boeing Defense, Space & Security Boeing Defense, Space & Security (BDS) is a division (business unit) of The Boeing Company based in Arlington, Virginia. It is responsible for defense and aerospace products and services. It was formerly known as Boeing Integrated Defense System ...

( Arlington) *

( McLean) ''481'' *

CACI CACI International Inc. (originally California Analysis Center, Inc., then Consolidated Analysis Center, Inc.) is an American multinational professional services and information technology company headquartered in Northern Virginia. CACI prov ...

( Arlington) *

Capital One Capital One Financial Corporation is an American bank holding company specializing in credit cards, auto loans, banking, and savings accounts, headquartered in McLean, Virginia with operations primarily in the United States. It is on the li ...

( McLean) ''100'' * Carfax (

Centreville, Virginia Centreville is a census-designated place (CDP) in Fairfax County, Virginia, United States and a suburb of Washington, D.C. The population was 73,518 as of the 2020 census. Centreville is approximately west of Washington, D.C. History Colonia ...

) *

(

Falls Church Falls Church is an independent city in the Commonwealth of Virginia. As of the 2020 census, the population was 14,658. Falls Church is included in the Washington metropolitan area. Taking its name from The Falls Church, an 18th-century Churc ...

) ''379'' *

Communications Satellite Corporation COMSAT (Communications Satellite Corporation) is a global telecommunications company based in the United States. By 2007, it had branches in Brazil, Argentina, Colombia, Mexico, Peru, Venezuela and several other countries in the Americas. A ...

( Herndon) * Comscore ( Reston) * Cvent ( Tysons Corner) *

DynCorp International DynCorp (), formally DynCorp International, was an American private military contractor. Started as an aviation company, the company also provided flight operations support, training and mentoring, international development, intelligence training ...

(

) *

Freddie Mac The Federal Home Loan Mortgage Corporation (FHLMC), commonly known as Freddie Mac, is a publicly traded, government-sponsored enterprise (GSE), headquartered in Tysons Corner, Virginia.McLean) ''39'' * FNH USA ( Fredericksburg) * FLIR Systems Government and Defense ( Arlington) *

Graham Holdings Graham Holdings Company (formerly The Washington Post Company) is a diversified American conglomerate holding company. Headquartered in Arlington County, Virginia, and incorporated in Delaware, it was formerly the owner of '' The Washington Po ...

( Arlington) *

Gannett Company Gannett Co., Inc. () is an American mass media holding company headquartered in McLean, Virginia, in the Washington, D.C., metropolitan area.McLean) *

(

) ''90'' * GTT Communications ( Tysons Corner) * Hilton Hotels Corporation ( McLean) ''241'' * ICF International ( Fairfax) *

Iridium Communications Iridium Communications Inc. (formerly Iridium Satellite LLC) is a publicly traded American company headquartered in McLean, Virginia. Iridium operates the Iridium satellite constellation, a system of 66 active satellites and 9 in-orbit spares us ...

( McLean) * Stride, Inc. ( Herndon) * Kellogg Brown and Root Services ( Arlington) *

( Reston) ''381'' * Ligado Networks ( Reston) *

Mars, Incorporated Mars, Incorporated is an American multinational manufacturer of confectionery, pet food, and other food products and a provider of animal care services, with US$40 billion in annual sales in 2021. Mars was ranked as the fourth-largest pri ...

( McLean) * M.C. Dean, Inc. ( Dulles) * MicroStrategy ( Tysons Corner) * Naviance ( Arlington) *

Navy Federal Credit Union Navy Federal Credit Union (or Navy Federal) is a global credit union headquartered in Vienna, Virginia, chartered and regulated under the authority of the National Credit Union Administration (NCUA). Navy Federal is the largest natural member ( ...

(

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

) *

NII Holdings NII Holdings, Inc. (formerly Nextel International) was an American holding company that, through its subsidiary Nextel Telecomunicações Ltda., provided mobile communications services under the Nextel brand in Brazil. NII operated 3G UMTS/HSDP ...

( Reston) *

(

) ''114'' * NVR Incorporated ( Reston) ''446'' *

Orbital Sciences Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...

( Dulles) *

Park Hotels & Resorts Park Hotels & Resorts is a real estate investment trust (REIT) focused on hotel properties, based in Tysons, Virginia. It was formed in 2017 as a spin-off from Hilton Worldwide. History Hilton Worldwide CEO Christopher Nassetta stated in June 20 ...

( Tysons Corner) *

Parsons Corporation Parsons Corporation (Parsons) is an American technology-focused defense, intelligence, security, and infrastructure engineering firm headquartered in Centreville, Virginia. The company was founded in 1944. Parsons has more than 16,000 employees ...

( Centreville) *

Rolls-Royce North America Rolls-Royce North America, Inc. is a subsidiary of multinational corporation Rolls-Royce plc. The American unit operates under a Special Security Arrangement which allows it to work independently on some of the most sensitive United States def ...

( Reston) *

Rosetta Stone The Rosetta Stone is a stele composed of granodiorite inscribed with three versions of a decree issued in Memphis, Egypt, in 196 BC during the Ptolemaic dynasty on behalf of King Ptolemy V Epiphanes. The top and middle texts are in Anci ...

( Arlington) *

( McLean) * SLM Corporation ( Reston) "Sallie Mae" *

Strategic Education, Inc. Strategic Education, Inc. (SEI), is an education services holding company and is formerly known as Strayer Education, Inc. The company owns for-profit, online Capella University and Strayer University, as well as non-degree programs schools s ...

( Herndon) *

Space Adventures Space Adventures, Inc. is an American space tourism company founded in 1998 by Eric C. Anderson. Its offerings include zero-gravity atmospheric flights, orbital spaceflights (with the option to participate in a spacewalk), and other spacefl ...

(

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

) * Tegna Inc. ( Tysons Corner) *

The Motley Fool The Motley Fool is a private financial and investing advice company based in Alexandria, Virginia. It was founded in July 1993 by co-chairmen and brothers David Gardner and Tom Gardner, and Erik Rydholm, who has since left the company. The compa ...

(

) * The Teaching Company ( Chantilly) *

Verisign Verisign Inc. is an American company based in Reston, Virginia, United States that operates a diverse array of network infrastructure, including two of the Internet's thirteen root nameservers, the authoritative registry for the , , and gene ...

( Reston) *

Verizon Business Verizon Business (formerly known as Verizon Enterprise Solutions) is a division of Verizon Communications based in Basking Ridge, New Jersey that provides services and products for Verizon's business and government clients around the world. I ...

( Ashburn) *

Volkswagen Group of America Volkswagen Group of America, Inc. (sometimes referred to as Volkswagen of America, abbreviated to VWoA), is the North American operational headquarters, and subsidiary of the Volkswagen Group of automobile companies of Germany. VWoA is responsi ...

( Herndon) *

VSE Corporation VSE Corporation () is a diversified products and services company providing repair services, distribution, logistics, supply chain management support and consulting services for land, sea, and air transportation assets in the public and private ...

(

) *

XO Communications XO Communications, LLC (previously Nextlink Communications, Concentric Network Corporation and Allegiance Telecom, Inc.) was an American telecommunications company. Before being purchased by and later absorbed by Verizon Communications. XO provid ...

( Herndon)

Sports

Table of professional teams and venues

Transportation

Washington Dulles International Airport at Dusk

Commercial Service Airports

Rail transit systems

Amtrak The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada. ...

Washington Metro The Washington Metro (or simply Metro), formally the Metrorail,Google Books search/preview

Virginia Railway Express Virginia Railway Express (VRE) is a commuter rail service that connects outlying small cities of Northern Virginia to Union Station in Washington, D.C. It operates two lines which run during weekday rush hour only: the Fredericksburg Line fro ...

MARC Train MARC (Maryland Area Rail Commuter) is a commuter rail system in the Baltimore–Washington metropolitan area. MARC is administered by the Maryland Transit Administration (MTA) and operated under contract by Alstom and Amtrak on track owned ...

Baltimore Light Rail Baltimore Light RailLink (formerly Baltimore Light Rail, and also known simply as the "Light Rail") is a light rail system serving Baltimore, Maryland, United States, as well as its surrounding suburbs. It is operated by the Maryland Transit ...

Metro Subway Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be ...

DC Streetcar The DC Streetcar is a surface streetcar network in Washington, D.C. , it consists of only one line: a segment running in mixed traffic along H Street and Benning Road in the city's Northeast quadrant. The streetcars are the first to run in ...

* '' Purple Line'' (future light rail)

Major highways

Interstates * I-66

Interstate 66 Interstate 66 (I-66) is an east–west Interstate Highway in the eastern United States. It runs from an interchange with I-81 near Middletown, Virginia, on its western end to an interchange with U.S. Route 29 (US 29) in Washing ...

Interstate 70 Interstate 70 (I-70) is a major east–west Interstate Highway in the United States that runs from I-15 near Cove Fort, Utah, to a park and ride lot just east of I-695 in Baltimore, Maryland, and is the fifth-longest Interstate in the co ...

Interstate 81 Interstate 81 (I-81) is a north–south (physically northeast–southwest) Interstate Highway in the eastern part of the United States. Its southern terminus is at I-40 in Dandridge, Tennessee; its northern terminus is on Wellesley Isla ...

Interstate 83 Interstate 83 (I-83) is an Interstate Highway in the Eastern United States. Its southern terminus is at a signalized intersection with Fayette Street in Baltimore, Maryland; its northern terminus is at I-81 near Harrisburg, Pennsylvania. Mo ...

Interstate 95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from US Route 1 (US 1) in Miami, Florida, to the Houlton–Woodstock Border Crossing between Maine and the Canadia ...

Interstate 97 * I-195

Interstate 195 * I-270

Interstate 270 * I-295

Interstate 295 * I-370

Interstate 370 Interstate 370 (I-370) is a Interstate Highway spur route off I-270 in Gaithersburg, Maryland, to the western end of the Maryland Route 200 (MD 200, Intercounty Connector) toll road at an interchange that provides access to the pa ...

Interstate 395 (District of Columbia-Virginia) * I-395

Interstate 395 (Maryland) Interstate 395 (I-395) is an Interstate Highway in the U.S. state of Maryland. Known as Cal Ripken Way, the highway runs from I-95 north to Howard Street and Camden Street in Downtown Baltimore, where it provides access to the Inner Harbor and ...

Interstate 495 (Capital Beltway) * I-595

Interstate 595 (Unsigned) * I-695

Interstate 695 (District of Columbia) * I-695

Interstate 695 (Baltimore Beltway) * I-795

Interstate 795 * I-895

Interstate 895 U.S. Routes * US 1

U.S. Route 1 U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs from Key West, Florida, north to Fort Kent, Maine, at the Canadian border, making ...

U.S. Route 11 * US 15

U.S. Route 15 * US 29

U.S. Route 29 * US 40

U.S. Route 40 U.S. Route 40 or U.S. Highway 40 (US 40), also known as the Main Street of America, is a major east–west United States Highway traveling across the United States from the Mountain States to the Mid-Atlantic States. As with most routes wh ...

U.S. Route 50 * US 301

U.S. Route 301 * US 340

U.S. Route 340 State Routes * MD Route 2

Maryland Route 2 Maryland Route 2 (MD 2) is the longest state highway in the U.S. state of Maryland. The route runs from Solomons Island in Calvert County north to an intersection with U.S. Route 1 (US 1)/ US 40 Truck ( North Avenue) in Baltimore. The route ...

Maryland Route 4 Maryland Route 4 (MD 4) is a state highway in the U.S. state of Maryland. The highway runs from MD 5 in Leonardtown north to Southern Avenue in Suitland at the District of Columbia boundary, beyond which the highway continues into Washingto ...

Maryland Route 5 * MD Route 26

Maryland Route 26 Maryland Route 26 (MD 26) is a state highway in the U.S. state of Maryland. Known for most of its length as Liberty Road, the state highway runs from U.S. Route 15 (US 15) in Frederick east to MD 140 in Baltimore. MD 26 connects Frederick and ...

Maryland Route 32 Maryland Route 32 (MD 32) is a state highway in the U.S. state of Maryland. The road runs from Interstate 97 (I-97) and MD 3 in Millersville west and north to Washington Road in Westminster. The east–west portion ...

Maryland Route 97 Maryland Route 97 (MD 97) is a state highway in the U.S. state of Maryland. The route runs from U.S. Route 29 (US 29) in Silver Spring, Montgomery County, north to the Pennsylvania border in Carroll County, where the r ...

Maryland Route 100 Maryland Route 100 (MD 100) is a major east–west highway connecting U.S. Route 29 (US 29) in Ellicott City (just north of Columbia) and MD 177 (Mountain Road) in Pasadena. MD 100 also connects to Interstate 95 (I-95), US 1, the Balt ...

Maryland Route 200 Maryland Route 200 (MD 200), also known as the Intercounty Connector or ICC, is an , six-lane toll road in the U.S. state of Maryland. A controlled-access highway, it connects Gaithersburg in Montgomery County and Laurel in Prince George's Co ...

(Intercounty Connector) * MD Route 295

Baltimore–Washington Parkway The Baltimore–Washington Parkway (also referred to as the B–W Parkway) is a highway in the U.S. state of Maryland, running southwest from Baltimore to Washington, D.C. The road begins at an interchange with U.S. Route 50 (US 50 ...

(Maryland Route 295) * MD Route 355

Maryland Route 355 Maryland Route 355 (MD 355) is a north–south road in western central Maryland in the United States. The southern terminus of the route, Wisconsin Avenue, is located in the Bethesda CDP, at the Washington, D.C. border. It co ...

Virginia State Route 3 Virginia State Route 3 is a primary state highway in the U.S. state of Virginia that extends from the town of Culpeper south and eastwardly to Gloucester in Virginia's Middle Peninsula region. For many years, a portion was named "Historyland ...

Virginia State Route 7 Virginia State Route 7 (VA 7) is a major primary state highway and busy commuter route in northern Virginia, United States. It travels southeast from downtown Winchester to SR 400 (Washington Street) in downtown Alexandria. ...

Virginia State Route 9 Virginia State Route 9 (SR 9) is a primary state highway in the U.S. state of Virginia. Known as Charles Town Pike, the state highway runs from the West Virginia state line near Mechanicsville, where the highway continues west as West Virgini ...

Virginia State Route 28 State Route 28 (SR 28) in the U.S. state of Virginia is a primary state highway that traverses the counties of Loudoun, Fairfax, Prince William, and Fauquier in the U.S. state of Virginia. The route serves as a major artery in the Northern Virg ...

Virginia State Route 267 State Route 267 (SR 267) is a primary state highway in the US state of Virginia. It consists of two end-to-end toll roads – the Dulles Toll Road and Dulles Greenway – as well as the non-tolled Dulles Access Road, which lies in the ...

Virginia State Route 286 (Fairfax County Parkway) * Virginia 289

Virginia State Route 289 The following highways are numbered 289: Canada * Manitoba Provincial Road 289 * Nova Scotia Route 289 * Quebec Route 289 Japan * Japan National Route 289 United Kingdom ...

(Franconia–Springfield Parkway) * WV-9

West Virginia Route 9 West Virginia Route 9 (WV 9) is a major east–west state highway located in the eastern extents of West Virginia's Eastern Panhandle. The western terminus of the route is at the Maryland state line north of Paw Paw, where WV 9 becomes ...

References

{{DEFAULTSORT:Baltimore-Washington metropolitan area Baltimore metropolitan area Washington metropolitan area Geography of Baltimore Geography of Washington, D.C. Northern Virginia Regions of Maryland Regions of Virginia Regions of Pennsylvania Regions of West Virginia Northeast megalopolis

Components of the combined statistical area

Regional organizations

Metropolitan Washington Council of Governments

Baltimore Metropolitan Council

List of principal cities

Baltimore area

Washington area

Economy

Primary industries

Biotechnology

Defense contracting

Notable company headquarters in the region

Maryland

Washington, D.C.

Northern Virginia

Sports

Table of professional teams and venues

Transportation

Commercial Service Airports

Rail transit systems

Major highways

See also

References