Teller County is the 22nd most populous of the 64 counties of the State of Colorado of the United States. The county population was 20,555 at U.S. Census 2000. The county seat is Cripple Creek. The Colorado Springs Metropolitan Statistical Area comprises El Paso County and Teller County.
There were 7,993 households out of which 33.60% had children under the age of 18 living with them, 64.20% were married couples living together, 6.60% had a female householder with no husband present, and 25.90% were non-families. 19.60% of all households were made up of individuals and 4.00% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 2.94.
In the county the population was spread out with 25.90% under the age of 18, 5.60% from 18 to 24, 31.20% from 25 to 44, 29.80% from 45 to 64, and 7.50% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 102.70 males. For every 100 females age 18 and over, there were 100.90 males.
The median income for a household in the county was $50,165, and the median income for a family was $57,071. Males had a median income of $37,194 versus $26,934 for females. The per capita income for the county was $23,412. About 3.40% of families and 5.40% of the population were below the poverty line, including 6.90% of those under age 18 and 4.20% of those age 65 or over.