Creek County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 69,967. Its county seat is Sapulpa.
According to the U.S. Census Bureau, the county has a total area of 970 square miles (2,500 km), of which 950 square miles (2,500 km) is land and 20 square miles (52 km) (2.0%) is water. It is drained by the Cimarron River, and the Deep Fork and Little Deep Fork of the North Canadian River. Heyburn Lake is contained within the County. Keystone Lake is partially within Creek County.
As of the census of 2000, there were 67,367 people, 25,289 households, and 19,017 families residing in the county. The population density was 70 people per square mile (27/km²). There were 27,986 housing units at an average density of 29 per square mile (11/km²). The racial makeup of the county was 82.27% White, 2.56% Black or African American, 9.08% Native American, 0.27% Asian, 0.03% Pacific Islander, 0.63% from other races, and 5.16% from two or more races. 1.90% of the population were Hispanic or Latino of any race.
There were 25,289 households out of which 34.80% had children under the age of 18 living with them, 60.10% were married couples living together, 10.90% had a female householder with no husband present, and 24.80% were non-families. 21.60% of all households were made up of individuals and 9.40% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.06.
In the county, the population was spread out with 27.40% under the age of 18, 8.00% from 18 to 24, 27.30% from 25 to 44, 24.50% from 45 to 64, and 12.80% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 96.00 males. For every 100 females age 18 and over, there were 92.90 males.
The median income for a household in the county was $33,168, and the median income for a family was $38,470. Males had a median income of $31,190 versus $21,690 for females. The per capita income for the county was $16,191. About 8% of families and 13.50% of the population were below the poverty line, including 17.20% of those under age 18 and 14.10% of those age 65 or over.