Adams County is a

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

located in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

. As of the 2020 census, the population was 519,572. The

county seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US st ...

Brighton Brighton () is a seaside resort and one of the two main areas of the City of Brighton and Hove in the county of East Sussex, England. It is located south of London. Archaeological evidence of settlement in the area dates back to the Bronze A ...

. The county is named for Alva Adams, an early Governor of the State of Colorado in 1887–1889. Adams County is part of the

Denver Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unit ...

–

Aurora An aurora (plural: auroras or aurorae), also commonly known as the polar lights, is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of bri ...

– Lakewood, CO

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 town, incorporate ...

History

On May 30, 1854, the

Kansas–Nebraska Act The Kansas–Nebraska Act of 1854 () was a territorial organic act that created the territories of Kansas and Nebraska. It was drafted by Democratic Senator Stephen A. Douglas, passed by the 33rd United States Congress, and signed into law by ...

created the

Territory of Nebraska The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30, 1854, until March 1, 1867, when the final extent of the territory was admitted to the Union as the State of Nebraska. The Nebraska ...

and

Territory of Kansas The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the Union as the free state of Kansas. ...

, divided by the

Parallel 40° North The 40th parallel north is a circle of latitude that is 40 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. At this latitude the sun is vi ...

( 168th Avenue in present-day Adams County). The future Adams County, Colorado, occupied a strip of northern

Arapahoe County, Kansas Territory Arapahoe County was a county of Kansas Territory in the United States that existed from August 25, 1855, until Kansas's admission into the Union on January 29, 1861. History On August 25, 1855, the Kansas Territorial Legislature created Arapahoe C ...

, immediately south of the

Nebraska Territory The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30, 1854, until March 1, 1867, when the final extent of the territory was admitted to the Union as the State of Nebraska. The Nebraska ...

. In 1859, John D. "Colonel Jack" Henderson built a ranch, trading post, and hotel on Henderson Island in the

South Platte River The South Platte River is one of the two principal tributaries of the Platte River. Flowing through the U.S. states of Colorado and Nebraska, it is itself a major river of the American Midwestern United States, Midwest and the American Sout ...

. Jack Henderson was the former editor and proprietor of the Leavenworth (

Kansas Territory The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the United States, Union as the Slave and ...

) Journal and an outspoken pro-slavery politician who had been accused of vote fraud in eastern Kansas. Henderson sold meat and provisions to gold seekers on their way up the South Platte River Trail to the gold fields during the

Pike's Peak Gold Rush The Pike's Peak Gold Rush (later known as the Colorado Gold Rush) was the boom in gold prospecting and mining in the Pike's Peak Country of western Kansas Territory and southwestern Nebraska Territory of the United States that began in July 1858 a ...

. Henderson Island was the first permanent settlement in the South Platte River Valley between

Fort Saint Vrain Fort Saint Vrain was an 1837 fur trading post built by the Bent, St. Vrain Company, and located at the confluence of Saint Vrain Creek and the South Platte River, about 20 miles (32 km) east of the Rocky Mountains in the unorganized territ ...

in the

and the Cherry Creek Diggings in the

. Jack Henderson eventually returned to eastern Kansas and fought for the

Union Union commonly refers to: * Trade union, an organization of workers * Union (set theory), in mathematics, a fundamental operation on sets Union may also refer to: Arts and entertainment Music * Union (band), an American rock group ** ''Un ...

in the

American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states th ...

. Henderson Island is today the site of the Adams County Regional Park and Fairgrounds. The eastern portion of the

was

admitted to the Union ''Admitted'' is a 2020 Indian Hindi-language docudrama film directed by Chandigarh-based director Ojaswwee Sharma. The film is about Dhananjay Chauhan, the first transgender student at Panjab University. The role of Dhananjay Chauhan has been p ...

as the

State of Kansas Kansas () is a state in the Midwestern United States. Its capital is Topeka, and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the ...

on January 29, 1861, and on February 28, 1861, the remaining western portion of the territory was made part of the new

Colorado Territory The Territory of Colorado was an organized incorporated territory of the United States that existed from February 28, 1861, until August 1, 1876, when it was admitted to the Union as the State of Colorado. The territory was organized in the w ...

. The

created Arapahoe County, on November 1, 1861, and Colorado was

on August 1, 1876. In 1901, the

Colorado General Assembly The Colorado General Assembly is the state legislature of the State of Colorado. It is a bicameral legislature that was created by the 1876 state constitution. Its statutes are codified in the ''Colorado Revised Statutes'' (C.R.S.). The ses ...

voted to split Arapahoe County into three parts: a new Adams County, a new consolidated City and County of Denver, and the remainder of the Arapahoe County to be renamed South Arapahoe County. A ruling by the

Colorado Supreme Court The Colorado Supreme Court is the highest court in the U.S. state of Colorado. Located in Denver, the Court consists of a Chief Justice and six Associate Justices. Powers and duties Appellate jurisdiction Discretionary appeals The Court p ...

, subsequent legislation, and a

referendum A referendum (plural: referendums or less commonly referenda) is a direct vote by the electorate on a proposal, law, or political issue. This is in contrast to an issue being voted on by a representative. This may result in the adoption of a ...

delayed the creation of Adams County until November 15, 1902.

Governor A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political ...

James Bradley Orman James Bradley Orman (November 4, 1849 – July 21, 1919) was an American politician and railroad builder. He served as the 12th Governor of Colorado from 1901 to 1903. He was a Democrat. Life and career Orman was born in Muscatine, Iowa and gre ...

designated

as the temporary Adams

County Seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US st ...

. Adams County originally stretched 160 miles (258 kilometers) from present-day Sheridan Boulevard to the

Kansas Kansas () is a state in the Midwestern United States. Its capital is Topeka, and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the ...

state border. On May 12, 1903, the eastern 88 miles (142 kilometers) of Adams County was transferred to the new Washington County and the new Yuma County, reducing the length of Adams County to the present 72 miles (116 kilometers). On November 8, 1904, Adams County voters chose

as the permanent

. A 1989 vote transferred 53 square miles (137 square kilometers) of Adams County to the City and County of Denver for the proposed

Denver International Airport Denver International Airport , locally known as DIA, is an international airport in the Western United States, primarily serving metropolitan Denver, Colorado, as well as the greater Front Range Urban Corridor. At , it is the largest airport in ...

, leaving the densely populated western portion of the county as two oddly-shaped peninsulas. Adams County lost the tip of its northwest corner when the consolidated City and County of Broomfield was created on November 15, 2001.

Geography

According to the

U.S. Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...

, the county has a total area of , of which is land and (1.4%) is water. Adams County surrounds (and surrendered the land for) most of

which are in the City and County of Denver.

Adjacent counties

Weld County Weld County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 328,981. The county seat is Greeley. Weld County comprises the Greeley, CO Metropolitan Statistical Area, which is included in the Denver ...

– north * Morgan County – northeast * Washington County – east * Arapahoe County – south * City & County of Denver – southeast * Jefferson County – west * City & County of Broomfield – northwest

Major Highways

Interstate 25 Interstate 25 (I-25) is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from I-10 at Las Cruces, New Mexic ...

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

Interstate 76 Interstate 76 may refer to: Interstate Highways in the United States * Interstate 76 (Colorado–Nebraska) * Interstate 76 (Ohio–New Jersey), running through Pennsylvania Video gaming * ''Interstate '76 ''Interstate '76'' is a vehicular ...

Interstate 225 Interstate 225 (I-225) is an auxiliary Interstate Highway in the U.S. state of Colorado. The freeway is a connector spur route of I-25 that acts as an eastern bypass in the Denver metropolitan area and serves Aurora. It also provides direct ...

* *

U.S. Highway 6 U.S. Route 6 (US 6), also called the Grand Army of the Republic Highway, honoring the American Civil War Grand Army of the Republic, veterans association, is a main route of the U.S. Highway system. While it currently runs east-northeast fr ...

U.S. Highway 36 U.S. Route 36 (US 36) is an east–west United States highway that travels approximately from Rocky Mountain National Park, Colorado to Uhrichsville, Ohio. The highway's western terminus is at Deer Ridge Junction, an intersection i ...

U.S. Highway 40 * US 85

U.S. Highway 85 U.S. Route 85 (US 85) is a north–south United States Highway that travels in the Mountain and Northern Plains states of the United States. The southern terminus of the highway is at the Mexican border in El Paso, Texas, connecting wi ...

U.S. Highway 87 U.S. Highway 87 (US 87) is a north–south United States highway (though it is signed east–west in New Mexico) that runs for 1,998 miles (3,215 km) from northern Montana to southern Texas, making it the longest north-south roa ...

State Highway 2 * Colorado 7

State Highway 7 * Colorado 36

State Highway 36 * Colorado 40

State Highway 40 * Colorado 44

State Highway 44 * Colorado 79

State Highway 79 * Colorado 128

State Highway 128 * Colorado 224

State Highway 224 * Colorado 265

State Highway 265 *

E-470 E-470 is a controlled-access toll road that traverses the eastern portion of the Denver metropolitan area in the US state of Colorado. It is the eastern half of the 470 beltway that serves Meridian, Parker, Aurora, Denver International Airport, ...

(tollway)

National protected area

Rocky Mountain Arsenal National Wildlife Refuge The Rocky Mountain Arsenal National Wildlife Refuge is a National Wildlife Refuge located adjacent to Denver and Commerce City, Colorado, in the United States. It is approximately northeast of downtown Denver. The refuge is on the grounds of t ...

State park

Barr Lake State Park Barr Lake State Park is a Colorado state park established in 1977 in Adams County near Brighton, Colorado, USA. The park has of trails, including an trail that circles Barr Lake. Fishing and boating are allowed in the northern half of the par ...

Historic trail

South Platte Trail South Platte Trail was a historic trail that followed the southern side of South Platte River from Fort Kearny in Nebraska to Denver, Colorado. Plains Indians, such as the Cheyenne and the Arapaho, hunted in the lands around the South Platte Riv ...

Recreational trails

American Discovery Trail The American Discovery Trail is a system of recreational trails and roads that collectively form a coast-to-coast hiking and biking trail across the mid-tier of the United States. Horses can also be ridden on most of this trail. The coastal tra ...

Big Dry Creek National Recreation Trail Big or BIG may refer to: * Big, of great size or degree Film and television * Big (film), ''Big'' (film), a 1988 fantasy-comedy film starring Tom Hanks * ''Big!'', a Discovery Channel television show * ''Richard Hammond's Big'', a television sh ...

Highline Canal National Recreation Trail The High Line Canal (HLC) is a man-made waterway, used for irrigation and recreation, that serves the Denver-Aurora metropolitan area. It begins at a diversion dam on the South Platte River, some above the mouth of Waterton Canyon. From its headg ...

* Platte River Greenway National Recreation Trail * Rocky Mountain Arsenal National Recreation Trail

Demographics

As of the census of 2000, there were 363,857 people, 128,156 households, and 92,144 families residing in the county. The population density was 305 people per square mile (118/km²). There were 132,594 housing units at an average density of 111 per square mile (43/km²). The racial makeup of the county was 77.29%

White White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on ...

, 2.97%

Black Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have o ...

African American African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of ens ...

, 1.19% Native American, 3.21%

Asian Asian may refer to: * Items from or related to the continent of Asia: ** Asian people, people in or descending from Asia ** Asian culture, the culture of the people from Asia ** Asian cuisine, food based on the style of food of the people from Asi ...

, 0.12%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe the original p ...

, 11.73% from

other races Other often refers to: * Other (philosophy), a concept in psychology and philosophy Other or The Other may also refer to: Film and television * ''The Other'' (1913 film), a German silent film directed by Max Mack * ''The Other'' (1930 film), a ...

, and 3.49% from two or more races. 28.19% of the population were

Hispanic The term ''Hispanic'' ( es, hispano) refers to people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or Hispanidad. The term commonly applies to countries with a cultural and historical link to Spain and to Vic ...

Latino Latino or Latinos most often refers to: * Latino (demonym), a term used in the United States for people with cultural ties to Latin America * Hispanic and Latino Americans in the United States * The people or cultures of Latin America; ** Latin A ...

of any race. There were 128,156 households, out of which 37.80% had children under the age of 18 living with them, 53.80% were married couples living together, 12.10% had a female householder with no husband present, and 28.10% were non-families. 21.20% of all households were made up of individuals, and 5.50% had someone who was 65 years of age or older living alone. The average household size was 2.81 and the average family size was 3.27. In the county, the population was spread out, with 28.60% under the age of 18, 10.30% from 18 to 24, 34.00% from 25 to 44, 19.40% from 45 to 64, and 7.80% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 102.80 males. For every 100 females age 18 and over, there were 102.10 males. The median income for a household in the county was $47,323, and the median income for a family was $52,517. Males had a median income of $36,499 versus $28,053 for females. The per capita income for the county was $19,944. About 6.50% of families and 8.90% of the population were below the poverty line, including 10.90% of those under age 18 and 7.30% of those age 65 or over. In 2000, the largest denominational groups were Catholics (with 60,429 members) and

Evangelical Protestant Evangelicalism (), also called evangelical Christianity or evangelical Protestantism, is a worldwide interdenominational movement within Protestant Christianity that affirms the centrality of being "born again", in which an individual exper ...

s (with 25,552 members). The largest religious bodies were the Catholic Church (with 60,429 adherents) and

the Church of Jesus Christ of Latter-day Saints The Church of Jesus Christ of Latter-day Saints, informally known as the LDS Church or Mormon Church, is a Nontrinitarianism, nontrinitarian Christianity, Christian church that considers itself to be the Restorationism, restoration of the ...

(with 6,808 adherents).

Politics

Adams County is predominately Democratic, not having voted Republican since

Ronald Reagan Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician, actor, and union leader who served as the 40th president of the United States from 1981 to 1989. He also served as the 33rd governor of California from 1967 ...

in 1984. In 2016,

Hillary Clinton Hillary Diane Rodham Clinton ( Rodham; born October 26, 1947) is an American politician, diplomat, and former lawyer who served as the 67th United States Secretary of State for President Barack Obama from 2009 to 2013, as a United States sen ...

won the county without a majority, becoming the first Democrat to do so since her husband

Bill Clinton William Jefferson Clinton ( né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 and agai ...

in 1992. In the 2020 election, Joe Biden easily won the county with a majority of the vote, a percentage similar to Barack Obama in 2012 and 2008 but with a much larger vote count.

Education

The school districts serving Adams County are: *

Adams 12 Five Star Schools The Adams County School District 12, commonly known as the Adams 12 Five Star Schools, is a public school district located in western Adams County, Colorado, United States. The district serves the suburban area immediately north of Denver includi ...

* Adams-Arapahoe School District 28J * Adams County School District 14 * Bennett School District 29-J * Byers School District 32J * Deer Trail School District 26J * Mapleton School District 1 *

School District 27J 27J Schools is a school district headquartered in Brighton, Colorado. The district was established in 1959 when several existing school districts were consolidated. Dr. Chris Fiedler is currently the superintendent. The district includes sections ...

* Strasburg School District 31J * Weld County School District RE-3J * Westminster Public School District * Wiggins School District RE-50J

Communities

Cities

Arvada Arvada () is a home rule municipality located in Jefferson and Adams counties, Colorado, United States. The city population was 124,402 at the 2020 United States Census, with 121,510 residing in Jefferson County and 2,892 residing in Adams Cou ...

(part) *

Commerce City The City of Commerce City is a home rule municipality located in Adams County, Colorado, United States. The city population was 62,418 at the 2020 United States Census, a 35.95% increase since the 2010 United States Census. Commerce City is the ...

* Federal Heights * Northglenn (part) * Thornton (most) *

Westminster Westminster is an area of Central London, part of the wider City of Westminster. The area, which extends from the River Thames to Oxford Street, has many visitor attractions and historic landmarks, including the Palace of Westminster, Bu ...

(part)

Town

Bennett Bennett may refer to: People *Bennett (name), including a list of people with the surname and given name Places Canada * Bennett, Alberta *Bennett, British Columbia * Bennett Lake, in the British Columbia and Yukon Territory **Bennett Range **Benn ...

(part) * Lochbuie (part)

Census-designated places

* Berkley *

Derby Derby ( ) is a city and unitary authority area in Derbyshire, England. It lies on the banks of the River Derwent in the south of Derbyshire, which is in the East Midlands Region. It was traditionally the county town of Derbyshire. Derby gai ...

* North Washington * Shaw Heights * Sherrelwood * Strasburg (mostly in Arapahoe Co.) * Todd Creek * Twin Lakes * Watkins (mostly in Arapahoe Co.) * Welby

Other unincorporated communities

* Adams City * Barr Lake * Cabin Creek *

Comanche The Comanche or Nʉmʉnʉʉ ( com, Nʉmʉnʉʉ, "the people") are a Native American tribe from the Southern Plains of the present-day United States. Comanche people today belong to the federally recognized Comanche Nation, headquartered in La ...

Dupont DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours. The company played a major role in ...

* Eastlake * Hazeltine *

Henderson Henderson may refer to: People *Henderson (surname), description of the surname, and a list of people with the surname *Clan Henderson, a Scottish clan Places Argentina *Henderson, Buenos Aires Australia *Henderson, Western Australia Canada * H ...

Leader Leadership, both as a research area and as a practical skill, encompasses the ability of an individual, group or organization to "lead", influence or guide other individuals, teams, or entire organizations. The word "leadership" often gets vi ...

* Living Springs *

Manila Manila ( , ; fil, Maynila, ), officially the City of Manila ( fil, Lungsod ng Maynila, ), is the capital of the Philippines, and its second-most populous city. It is highly urbanized and, as of 2019, was the world's most densely populate ...

License plate code

Up until 1999 when Colorado ceased coding license plates by county, Adams County used the following codes on

license plates A vehicle registration plate, also known as a number plate (British English), license plate (American English), or licence plate (Canadian English), is a metal or plastic plate attached to a motor vehicle or trailer for official identificat ...

issued to passenger vehicles: TE-UF, GA-GG, SAA-SEW, and SEY-TZZ.

In popular culture

Adams County was featured as the fictional rival of South Park's peewee hockey team in the ''South Park'' episode "Stanley's Cup".

References

External links

Adams County Government website
*
History of Adams County, Colorado

Adams County Community Development

Adams County Education Consortium

Adams County Economic Development
{{authority control Colorado counties 1901 establishments in Colorado Eastern Plains Populated places established in 1901