Boulder County, Colorado
Map of Colorado highlighting Boulder County
Location in the state of Colorado
Map of the U.S. highlighting Colorado
Colorado's location in the U.S.
Founded November 1, 1861
Named for large granite boulders in area
Seat Boulder
Largest city Boulder
 - Total
 - Land
 - Water

751.37 sq mi (1,946 km²)
742.46 sq mi (1,923 km²)
8.91 sq mi (23 km²), 1.19%
 - (2000)
 - Density

391/sq mi (151/km²)
Sixth most populous Colorado county

Boulder County is the sixth most populous of the 64 counties of the state of Colorado of the United States. The county seat is Boulder. The most populous municipality in the county and the county seat is the City of Boulder. Boulder County is coextensive with the Boulder Metropolitan Statistical Area, an Office of Management and Budget-designated metropolitan statistical area also used for statistical purposes by the Census Bureau.

The United States Census Bureau estimated that the county population was 280,440 in 2005 and 282,304 in 2006.[1] This was a loss of 3.72% between 2005 and 2000, but a gain of 3.95% since 2000 excluding the area transferred to the City and County of Broomfield. Boulder Metropolitan Statistical Area is the 161st most populous metropolitan statistical area in the United States.[2]

The Boulder MSA together with the Denver-Aurora MSA, and the Greeley MSA comprise the Denver-Aurora-Boulder Combined Statistical Area.

History[edit | edit source]

Boulder County was one of the original 17 counties created by the Territory of Colorado on November 1, 1861. The county was named for Boulder City and Boulder Creek, so named because of the abundance of boulders in the area. Boulder County retains essentially the same borders as in 1861, although a 27.5 square miles (71.2 km2)of its southeastern corner and its approximate population of 40,000 became part of the City and County of Broomfield in 2001.

Geography[edit | edit source]

Boulder and the mountains to the west of the city

According to the 2000 census, the county has a total area of 751.37 square miles (1,946.0 km2), of which 742.46 square miles (1,923.0 km2) (or 98.81%) is land and 8.91 square miles (23.1 km2) (or 1.19%) is water.[3]

Adjacent counties[edit | edit source]

Demographics[edit | edit source]

Historical populations
Census Pop.
1900 21,544
1910 30,330 40.8%
1920 31,861 5.0%
1930 32,456 1.9%
1940 37,438 15.4%
1950 48,296 29.0%
1960 74,254 53.7%
1970 131,889 77.6%
1980 189,625 43.8%
1990 226,374 19.4%
2000 271,651 20.0%
Est. 2009 303,482 11.7%

As of the census[6] 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, 0.88% Black or African American, 0.61% Native American, 3.06% Asian, 0.06% Pacific Islander, 4.67% from other races, and 2.18% from two or more races. 10.46% of the population were Hispanic or Latino 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.

The median income for a household in the county was $55,861, and the median income for a family was $70,572. Males had a median income of $48,047 versus $32,207 for females. The per capita income for the county was $28,976. About 4.60% of families and 9.50% of the population were below the poverty line, including 7.60% of those under age 18 and 5.90% of those age 65 or over.

County government[edit | edit source]

Boulder County is divided into three individual 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 current commissioners are Ben Pearlman (vice-chair), Will Toor, and Cindy Domenico (chair).

The Board of County Commissioners are full-time public servants and as such 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.

In addition to the commissioners Boulder County has seven other county-wide elected officials including the District Attorney, who represents the 20th Judicial District.[7]

Elected Officials[edit | edit source]

Name Office Year Elected Year Re-Elected
Ben Pearlman County Commissioner 2004 2008
Will Toor County Commissioner 2004 2008
Cindy Domenico County Commissioner 2007/2008* 2010
Jerry Roberts Assessor 2007/2008** 2010
Hillary Hall Clerk and Recorder 2006 2010
Emma R. Hall Coroner 2010
Stanley L. Garnett District Attorney 2008
Joe Pelle Sheriff 2002 2006, 2010
Jason Emery Surveyor 2002 2006, 2010
Bob Hullinghorst Treasurer 2002 2006

*Cindy Domenico was appointed in July 2007 to fill Tom Mayer's seat after he died in June 2007. In 2008, voters elected Domenico to complete the remainder of the term which runs through 2010.

**Jerry Roberts was appointed in July 2007 to replace Cindy Domenico who was elected to the post of Boulder County Commissioner. In 2008, voters elected Roberts to complete the remainder of the term which runs through 2010.

Local courts[edit | edit source]

The 20th Judicial District of Colorado, the state trial court of general jurisdiction, 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, consists of five judges and six magistrates.

Boulder County has two combined courthouses:

  • The Boulder County Justice Center is located in the City of Boulder and is headquarters to the 20th Judicial District of Colorado. The officies of the district attorney and sheriff are located 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.[8]

Places[edit | edit source]

Boulder County, Colorado

Incorporated[edit | edit source]

Unincorporated[edit | edit source]

Rocky Mountain National Park[edit | edit source]

Rocky Mountain National Park is located in Boulder County, Larimer County, and Grand County. Longs Peak, the park's highest summit at 4345 meters (14,255 ft) elevation, is located in Boulder County.

State park[edit | edit source]

Historic district[edit | edit source]

National forest and wilderness[edit | edit source]

Scenic trail and byway[edit | edit source]

See also[edit | edit source]

United States Administrative Divisions unnumbered.png

U.S. Census Bureau statistical areas by state, district, or territory


References[edit | edit source]

External links[edit | edit source]

Coordinates: 40°05′N 105°22′W / 40.09, -105.36

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