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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
Area
 - 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%
Population
 - (2020)
 - Density

330,758
391/sq mi (151/km²)
Website www.co.boulder.co.us
Footnotes:
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 2020 census was 330,758.

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

History[]

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[]

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.[1]

Adjacent counties[]

Demographics[]

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%
2010 294,567 8.4%
sources:[2][3]

As of the census[4] 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.

Politics[]

Boulder County went Republican 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 and 2012, only 22% in 2016, and just over 20% in 2020.

In 2000, Green Party presidential candidate Ralph Nader 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.[5]

United States presidential election results for Boulder County, Colorado[6]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 42,501 20.62% 159,089 77.19% 4,521 2.19%
2016 41,396 22.00% 132,334 70.34% 14,415 7.66%
2012 49,981 27.84% 125,091 69.69% 4,427 2.47%
2008 44,904 26.14% 124,159 72.29% 2,700 1.57%
2004 51,586 32.39% 105,564 66.28% 2,109 1.32%
2000 50,873 36.44% 69,983 50.12% 18,770 13.44%
1996 41,922 34.55% 63,316 52.17% 16,116 13.28%
1992 33,553 26.47% 64,567 50.93% 28,651 22.60%
1988 48,174 44.93% 57,265 53.41% 1,784 1.66%
1984 53,535 55.06% 42,195 43.40% 1,493 1.54%
1980 40,698 46.74% 28,422 32.64% 17,949 20.61%
1976 42,830 52.71% 33,284 40.96% 5,139 6.32%
1972 40,766 56.80% 29,484 41.08% 1,520 2.12%
1968 27,671 57.66% 17,422 36.30% 2,895 6.03%
1964 17,373 43.08% 22,737 56.38% 220 0.55%
1960 19,791 61.47% 12,276 38.13% 130 0.40%
1956 16,748 66.89% 8,149 32.55% 142 0.57%
1952 15,069 65.29% 7,767 33.65% 243 1.05%
1948 10,335 52.09% 8,792 44.32% 712 3.59%
1944 10,054 57.09% 7,442 42.26% 114 0.65%
1940 10,525 53.22% 9,039 45.71% 212 1.07%
1936 7,244 41.39% 9,788 55.93% 469 2.68%
1932 7,487 44.81% 8,412 50.35% 808 4.84%
1928 9,457 67.48% 4,363 31.13% 195 1.39%
1924 7,595 58.75% 3,273 25.32% 2,059 15.93%
1920 6,456 57.91% 4,200 37.67% 492 4.41%
1916 3,986 33.02% 7,419 61.46% 666 5.52%
1912 2,445 23.02% 4,330 40.77% 3,845 36.21%
1908 4,856 41.76% 5,772 49.63% 1,001 8.61%
1904 5,483 53.90% 4,030 39.62% 659 6.48%
1900 3,719 40.57% 5,117 55.81% 332 3.62%
1896 1,033 14.33% 6,046 83.87% 130 1.80%
1892 1,338 36.42% 0 0.00% 2,336 63.58%
1888 1,639 54.98% 1,176 39.45% 166 5.57%
1884 1,445 51.59% 954 34.06% 402 14.35%
1880 1,313 54.66% 796 33.14% 293 12.20%



Boulder County has also demonstrated its progressive leanings in referenda 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.[7] In 2012, over 66% of Boulder County voted in favor of Amendment 64, legalizing marijuana in the state of Colorado.

Places[]

Boulder County, Colorado

Incorporated[]

Unincorporated[]

  • Allenspark (unincorporated CDP)
  • Caribou (unincorporated ghost town)
  • Coal Creek (unincorporated CDP, locally called Coal Creek Canyon, also partly in Gilpin County and Jefferson County)
  • Eldora (unincorporated CDP)
  • Eldorado Springs (unincorporated CDP)
  • Gold Hill (unincorporated CDP)
  • Gunbarrel (unincorporated CDP)
  • Hygiene (unincorporated)
  • Niwot (unincorporated CDP)

Rocky Mountain National Park[]

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[]

  • Eldorado Canyon State Park

Historic district[]

  • Colorado Chautauqua National Historic District

National forest and wilderness[]

  • Arapaho National Forest
  • Roosevelt National Forest
  • Indian Peaks Wilderness
  • James Peak Wilderness

Scenic trail and byway[]

  • Continental Divide National Scenic Trail
  • Peak to Peak Scenic and Historic Byway

See also[]

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U.S. Census Bureau statistical areas by state, district, or territory
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  • Jackson County, Jefferson Territory

References[]

External links[]

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


This page uses content from the English language Wikipedia. The original content was at Boulder County, Colorado. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.
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