Boulder 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 ...

of the United States. As of the 2020 census, the population was 330,758. The most populous

municipality A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...

in the county and 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 ...

Boulder In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In c ...

. Boulder County comprises the Boulder, Colorado

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 ...

, which is included in 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 ...

, Colorado

Combined Statistical Area Combined statistical area (CSA) is a United States Office of Management and Budget (OMB) term for a combination of adjacent metropolitan (MSA) and micropolitan statistical areas (µSA) across the 50 US states and the territory of Puerto Ric ...

History

Boulder County was one of the original 17 counties created by the

Territory of Colorado 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 ...

on November 1, 1861. The county was named for

Boulder City Boulder City is a city in Clark County, Nevada, United States. It is approximately southeast of Las Vegas. As of the 2020 census, the population of Boulder City was 14,885. The city took its name from Boulder Canyon. Boulder City is one of on ...

and Boulder Creek, so named because of the abundance of boulders in the creek which hampered early gold prospecting efforts. Boulder County retains essentially the same borders as in 1861, although a of its southeastern corner and its approximate population of 40,000 became part of the City and County of Broomfield in 2001. Before the arrival of the first US settlers, the area was occupied by Native Americans led by

Chief Niwot Chief Niwot ( Hinóno'eitíít/Arapaho: Nowoo3 ɔ'wɔːθ or Left Hand(-ed) (c. 1825–1864) was a Southern Arapaho chief, diplomat, and interpreter who negotiated for peace between white settlers and the Cheyenne and Arapaho tribes during the P ...

on the plains and seasonally by Utes in the mountains to the west. The first European American settlers were gold prospectors led by Captain Thomas Aikins. His group of about twenty settled at the mouth of Boulder Creek Canyon on October 17, 1858. Chief Niwot told them not to stay and it is said they promised to move into the mountains to prospect in the spring. However in February 1859, they founded the town of Boulder. At about the same time, they also founded the first Gold Mining town in what would become Colorado,

Gold Hill Gold Hill may refer to: Canada * Gold Hill, British Columbia United Kingdom * Gold Hill, Shaftesbury, Dorset, a steep street used in Hovis commercial United States ;Alabama * Gold Hill, Alabama ;California * Gold Hill, El Dorado County, C ...

which is about 10 miles west from Boulder. Gold Hill was founded because of the placer gold discovered there. The area was the site of the first commercial scale placer mine in Colorado, producing over 5,500 ounces of gold in the first year of operations (1859).

Recent events

In late December 2021, the Marshall Fire raged through the parched lands near

Boulder, Colorado Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Color ...

. Marshall Fire is the most destructive in Colorado's history. The fire impacted City of Superior, City of

Louisville Louisville ( , , ) is the largest city in the Commonwealth of Kentucky and the 28th most-populous city in the United States. Louisville is the historical seat and, since 2003, the nominal seat of Jefferson County, on the Indiana border. ...

and unincorporated Boulder County areas. 991 homes were destroyed with an additional 127 damaged. Over 13,000 people in Superior and 21,000 in Louisville were ultimately evacuated while the fire was spreading due to unusual 100 mile per hour winds. Additionally, one person died and another is missing and presumed dead. The cause of the fire has not been officially announced, pending an investigation. However, an incident report filed by a ranger with Boulder Open Space and Mountain Parks identified two ignition points for the fire. The first ignition point was a shed that began to burn at approximately 11:30AM MST, December 30, 2021. The second ignition point was upwind from the first, and started around noon of the same day on "western side of the Marshall Mesa trailhead".

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 (1.9%) is water.

Adjacent counties

Major Highways

* U.S. Highway 36 (Denver-Boulder Turnpike) * U.S. Highway 287 * State Highway 7 * Colorado 42

State Highway 42 * Colorado 52

State Highway 52 * Colorado 66

State Highway 66 * Colorado 72

State Highway 72 * Colorado 93

State Highway 93 * Colorado 119

State Highway 119 * Colorado 170

State Highway 170 *

Northwest Parkway The Northwest Parkway is a road that runs from U.S. Highway 36 (US 36) to the Interstate 25 (I-25)/E-470 interchange. Both terminuses are in Broomfield, northwest of Denver. In combination with E-470 () and State Highway&nb ...

(tollway)

National protected areas

Rocky Mountain National Park Rocky Mountain National Park is an American national park located approximately northwest of Denver in north-central Colorado, within the Front Range of the Rocky Mountains. The park is situated between the towns of Estes Park to the east and ...

is in Boulder County,

Larimer County Larimer County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 359,066. The county seat and most populous city is Fort Collins. The county was named for William Larimer, Jr., the founder of Denver. ...

, and Grand County.

Longs Peak Longs Peak (Arapaho: ) is a high and prominent mountain in the northern Front Range of the Rocky Mountains of North America. The fourteener is located in the Rocky Mountain National Park Wilderness, southwest by south ( bearing 209°) of th ...

, the park's highest summit at elevation, is located in Boulder County.

State protected area

Eldorado Canyon State Park Eldorado Canyon State Park is part of the Colorado State Park system. It was established in 1978 and is located in Boulder County near the city of Boulder. The park consists of two areas, the Inner Canyon (developed area) and Crescent Meadows (u ...

Scenic trails and byways

Continental Divide National Scenic Trail The Continental Divide National Scenic Trail (in short Continental Divide Trail (CDT)) is a United States National Scenic Trail with a length measured by the Continental Divide Trail Coalition of between the U.S. border with Chihuahua, Mexico a ...

Peak to Peak Scenic and Historic Byway State Highway 72 (SH 72) is a state highway passing through the foothills and the eastern edge of the Front Range. Its southern terminus is at Interstate 70 in Colorado, Interstate 70 (I-70) in Wheat Ridge, Colorado, Wheat Ridge, and its northern ...

Historic district

* Colorado Chautauqua National Historic District

Demographics

As of the census of 2000, there were 271,651 people, 114,680 households, and 68,808 families residing in the county. The population density was 392 people per square mile (151/km²). There were 119,900 housing units at an average density of 162 per square mile (62/km²). The racial makeup of the county was 88.54%

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 ...

, 0.88%

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 ...

, 0.61% Native American, 3.06%

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 ...

, 0.06%

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 ...

, 4.67% 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 2.18% from two or more races. 10.46% 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 114,680 households, out of which 30.70% had children under the age of 18 living with them, 48.90% were married couples living together, 7.70% had a female householder with no husband present, and 40.00% were non-families. 26.30% of all households were made up of individuals, and 5.50% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.03. In the county, the population was spread out, with 22.90% under the age of 18, 13.40% from 18 to 24, 33.60% from 25 to 44, 22.30% from 45 to 64, and 7.80% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 102.20 males. For every 100 females age 18 and over, there were 101.70 males. In 2014, the median income for a household in the county was $69,407, and the median income for a family was $94,938. Males had a median income of $65,489 versus $48,140 for females. About 7.0% of families and 14.6% of the population were below the poverty line, including 14.6% of those under age 18 and 5.9% of those age 65 or over. In 2017, Bloomberg ranked the Boulder metropolitan area as the top "brain" area in the US.

Government

Boulder County is divided into three districts each represented by a commissioner elected county-wide. The three commissioners comprise the county Board of Commissioners and represent the county as a whole. Each commissioner must reside in their respective district and may be elected to a maximum of two four-year terms. The Board of County Commissioners are full-time public servants and approve the budget for the entire County government. The Board also oversees the management of 10 County departments and the daily operations of the county, work that is done by a county manager or a chief administrative officer in some counties. Boulder County has seven other county-wide elected officials, including the District Attorney, who represents the 20th Judicial District.

Elected officials

Politics

Boulder County went

Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...

in all but three presidential elections from 1920 to 1984, the exceptions being the national Democratic landslides of 1932, 1936 and 1964. However, it has swung heavily to the Democrats since the late 1980s, and has supported Democrats at every election since 1988. Since the 1990s, it has become one of the most liberal counties in Colorado; in most years, it is the second-strongest Democratic bastion in the state, behind only the City and County of Denver. The GOP has not crossed the 40% mark in the county since 1988. This tracks closely with the Democratic trend in other counties dominated by college towns. In recent years, the GOP has turned in some of its worst showings in the county in memory. Republicans took less than 28% of the vote in Boulder County in both

2008 File:2008 Events Collage.png, From left, clockwise: Lehman Brothers went bankrupt following the Subprime mortgage crisis; Cyclone Nargis killed more than 138,000 in Myanmar; A scene from the opening ceremony of the 2008 Summer Olympics in Beijing; ...

and

2012 File:2012 Events Collage V3.png, From left, clockwise: The passenger cruise ship Costa Concordia lies capsized after the Costa Concordia disaster; Damage to Casino Pier in Seaside Heights, New Jersey as a result of Hurricane Sandy; People gather ...

, only 22% in

2016 File:2016 Events Collage.png, From top left, clockwise: Bombed-out buildings in Ankara following the 2016 Turkish coup d'état attempt; the impeachment trial of Brazilian President Dilma Rousseff; Damaged houses during the 2016 Nagorno-Karabakh ...

, and just over 20% in

2020 2020 was heavily defined by the COVID-19 pandemic, which led to global Social impact of the COVID-19 pandemic, social and Economic impact of the COVID-19 pandemic, economic disruption, mass cancellations and postponements of events, COVID- ...

. In 2000,

Green Party A green party is a formally organized political party based on the principles of green politics, such as social justice, environmentalism and nonviolence. Greens believe that these issues are inherently related to one another as a foundation ...

presidential candidate

Ralph Nader Ralph Nader (; born February 27, 1934) is an American political activist, author, lecturer, and attorney noted for his involvement in consumer protection, environmentalism, and government reform causes. The son of Lebanese immigrants to the Un ...

took 11.82% of the vote in Boulder County, more than twice the 5.25% he took statewide in Colorado, and more than four times his 2.73% nationwide vote share. Boulder County has also demonstrated its progressive leanings in referendums on social issues, such as in 2006, when nearly 2/3 of Boulder County voters voted to reject Amendment 43, a constitutional amendment defining marriage as between one man and one woman. Although the amendment passed statewide with 55% of the vote, only 33% of Boulder County supported it. In 2012, over 66% of Boulder County voted in favor of Amendment 64, legalizing marijuana in the state of Colorado.

Local courts

The 20th Judicial District of Colorado, the state

trial court A trial court or court of first instance is a court having original jurisdiction, in which trials take place. Appeals from the decisions of trial courts are usually made by higher courts with the power of appellate review (appellate courts). Mos ...

general jurisdiction {{Globalize, article, USA, 2name=the United States, date=December 2010 A court of general jurisdiction is a court with authority to hear cases of all kinds – criminal, civil, family, probate, and so forth. United States All federal courts ar ...

, serves and is coextensive with Boulder County. As of 2009 the 20th Judicial Circuit has eight District Court judges. The Boulder County Court, the state trial court of

limited jurisdiction Limited jurisdiction, or special jurisdiction, is the court's jurisdiction only on certain types of cases such as bankruptcy, and family matters. Courts of limited jurisdiction, as opposed to general jurisdiction, derive power from an issuing autho ...

, consists of five judges and six

magistrate The term magistrate is used in a variety of systems of governments and laws to refer to a civilian officer who administers the law. In ancient Rome, a '' magistratus'' was one of the highest ranking government officers, and possessed both judici ...

s. Boulder County has two combined

courthouse A courthouse or court house is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English-spe ...

s: *The Boulder County Justice Center is located in the City of Boulder and is headquarters to the 20th Judicial District of Colorado. The office of the

district attorney In the United States, a district attorney (DA), county attorney, state's attorney, prosecuting attorney, commonwealth's attorney, or state attorney is the chief prosecutor and/or chief law enforcement officer representing a U.S. state in a l ...

is also here, as is the Juvenile Assessment Center, the county's combined assessment and detention facility. *The Longmont Courthouse in the City of Longmont acts as an extension of the County Court and the District Attorney's Office.

Communities

Cities

Lafayette Lafayette or La Fayette may refer to: People * Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette * House of La Fayette, a French noble family ** Gilbert du Motier, Marquis de Lafayette (1757� ...

Longmont The City of Longmont is a home rule municipality located in Boulder and Weld counties, Colorado, United States. Longmont is located northeast of the county seat of Boulder and north-northwest of the Colorado State Capitol in Denver. Longmont's ...

(partly in

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 ...

) *

Towns

Erie Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 a ...

(partly in

) * Jamestown *

Lyons Lyon,, ; Occitan: ''Lion'', hist. ''Lionés'' also spelled in English as Lyons, is the third-largest city and second-largest metropolitan area of France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of th ...

* Nederland * Superior (partly in Jefferson County) * Town of Ward

Census-designated places

* Allenspark * Altona * Bark Ranch * Bonanza Mountain Estates * Coal Creek (partly in

Gilpin County Gilpin County is a county located in the U.S. state of Colorado, smallest in land area behind only the City and County of Broomfield. As of the 2020 census, the population was 5,808. The county seat is Central City. The county was formed in 18 ...

and Jefferson County) * Crisman * Eldora * Eldorado Springs *

Glendale Glendale is the anglicised version of the Gaelic Gleann Dail, which means ''valley of fertile, low-lying arable land''. It may refer to: Places Australia * Glendale, New South Wales ** Stockland Glendale, a shopping centre *Glendale, Queensland, ...

* Gunbarrel * Hidden Lake * Lazy Acres * Leyner * Mountain Meadows * Niwot * Paragon Estates * Pine Brook Hill * Seven Hills * St. Ann Highlands *

Sugarloaf A sugarloaf was the usual form in which refined sugar was produced and sold until the late 19th century, when granulated and cube sugars were introduced. A tall cone with a rounded top was the end product of a process in which dark molasses, a ri ...

Sunshine Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when th ...

* Tall Timber * Valmont

Other unincorporated communities

Caribou Reindeer (in North American English, known as caribou if wild and ''reindeer'' if domesticated) are deer in the genus ''Rangifer''. For the last few decades, reindeer were assigned to one species, ''Rangifer tarandus'', with about 10 subspe ...

* Canfield * Gooding *

Hygiene Hygiene is a series of practices performed to preserve health. According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refer ...

*Highland * Liggett *Morey * Pinecliffe *Pleasant View Ridge (partly in

) *Tabor

Education

School districts serving Boulder County include:
Text list
/ref> * Boulder Valley School District RE-2 * Estes Park School District R-3 *

St. Vrain Valley School District RE 1J ST, St, or St. may refer to: Arts and entertainment * Stanza, in poetry * Suicidal Tendencies, an American heavy metal/hardcore punk band * Star Trek, a science-fiction media franchise * Summa Theologica, a compendium of Catholic philosophy an ...

* Thompson School District R-2J

References

External links

Boulder County Government websiteColorado Historical SocietyRocky Mountain National Park website
{{Authority control Colorado counties 1861 establishments in Colorado Territory Metropolitan areas of Colorado Populated places established in 1861