Boulder County, Colorado

Boulder County is the sixth most populous of the of the  of the. The estimates that the county population was 282,304 in 2006. The is the. The comprises Boulder County.

History
Boulder County was one of the original 17 counties created by the on. The county was named for and, so named because of the abundance of boulders in the area. Boulder County retains essentially the same borders as in 1861, although a small portion of its southeastern corner became part of the in.

Geography
According to the, the county has a total area of 1,946 (751 ). 1,923 km² (742 sq mi) of it is land and 23 km² (9 sq mi) of it (1.19%) is water.

Adjacent counties

 * - north
 * - east
 * - southeast
 * - south
 * - south
 * - west

Demographics
As of the of 2000, there were 291,288 people, 114,680 households, and 68,808 families residing in the county. The was 151/km² (392/sq mi). There were 119,900 housing units at an average density of 62/km² (162/sq mi). The racial makeup of the county was 88.54%, 0.88% or , 0.61% , 3.06% , 0.06% , 4.67% from , and 2.18% from two or more races. 10.46% of the population were or  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 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 for the county was $28,976. About 4.60% of families and 9.50% of the population were below the, including 7.60% of those under age 18 and 5.90% of those age 65 or over.

Rocky Mountain National Park
is located in, , and Boulder County, Colorado. , the park's highest summit at 4345 meters (14,255 feet) elevation, is located in Boulder County.