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Summit County, Colorado

Summit County is a county located in the U.S. state of Colorado. As of 2000, the population is 23,548. The county seat is Breckenridge.

Table of contents
1 Geography
2 Demographics
3 Cities and towns
4 History


According to the U.S. Census Bureau, the county has a total area of 1,604 km² (619 mi²). 1,575 km² (608 mi²) of it is land and 29 km² (11 mi²) of it is water. The total area is 1.79% water.


As of the census2 of 2000, there are 23,548 people, 9,120 households, and 4,769 families residing in the county. The population density is 15/km² (39/mi²). There are 24,201 housing units at an average density of 15/km² (40/mi²). The racial makeup of the county is 91.84% White, 0.68% Black or African American, 0.48% Native American, 0.87% Asian, 0.07% Pacific Islander, 3.96% from other races, and 2.10% from two or more races. 9.79% of the population are Hispanic or Latino of any race.

There are 9,120 households out of which 24.00% have children under the age of 18 living with them, 44.00% are married couples living together, 4.40% have a female householder with no husband present, and 47.70% are non-families. 21.60% of all households are made up of individuals and 1.60% have someone living alone who is 65 years of age or older. The average household size is 2.48 and the average family size is 2.86.

In the county the population is spread out with 17.40% under the age of 18, 15.70% from 18 to 24, 44.30% from 25 to 44, 19.40% from 45 to 64, and 3.30% who are 65 years of age or older. The median age is 31 years. For every 100 females there are 139.00 males. For every 100 females age 18 and over, there are 144.90 males.

The median income for a household in the county is $56,587, and the median income for a family is $66,914. Males have a median income of $33,741 versus $27,017 for females. The per capita income for the county is $28,676. 9.00% of the population and 3.10% of families are below the poverty line. Out of the total people living in poverty, 4.30% are under the age of 18 and 3.40% are 65 or older.

Cities and towns


Summit Cunty was organized as one of the seventeen original Colorado counties by the First Territorial Legislature on November 1, 1861. Untill February 2, 1874, its boundaries included the area now comprising Summit County,
Grand County, Routt County, Moffat County, Garfield County, Eagle County, and Rio Blanco County.