Seminole County is a county located in central Oklahoma. As of the 2010 census, the population was 25,482. Its county seat is Wewoka. Before Oklahoma’s admission as a state, the county was the entire small portion of Indian Territory allocated to the Seminole people, who were removed from Florida in the 1820s.
Seminole County is notable for the Greater Seminole Field, one of the most important oil fields ever found, which is still producing. It extends into nearby counties. In the early years of the oil boom, workers and adventurers flooded into the county, rapidly tripling the population. As oil production later declined, jobs and residents left.
According to the U.S. Census Bureau, the county has a total area of 640 square miles (1,700 km2), of which 633 square miles (1,640 km2) is land and 7.6 square miles (20 km2) (1.2%) is water. The county is bounded on the north by the North Canadian River and on the south by the Canadian River.
As of the census of 2000, there were 24,894 people, 9,575 households, and 6,788 families residing in the county. The population density was 15/km² (39/mi²). There were 11,146 housing units at an average density of 7/km² (18/mi²). The racial makeup of the county was 70.74% White, 5.59% Black or African American, 17.39% Native American, 0.22% Asian, 0.05% Pacific Islander, 0.74% from other races, and 5.28% from two or more races. 2.22% of the population were Hispanic or Latino of any race. 94.7% spoke English, 2.9% Muskogee and 1.7% Spanish as their first language.
There were 9,575 households out of which 30.70% had children under the age of 18 living with them, 53.30% were married couples living together, 13.30% had a female householder with no husband present, and 29.10% were non-families. 25.90% of all households were made up of individuals and 13.10% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.05.
In the county, the population was spread out with 26.30% under the age of 18, 9.00% from 18 to 24, 24.40% from 25 to 44, 23.40% from 45 to 64, and 16.70% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 93.20 males. For every 100 females age 18 and over, there were 90.00 males.
The median income for a household in the county was $25,568, and the median income for a family was $30,791. Males had a median income of $25,954 versus $18,285 for females. The per capita income for the county was $13,956. About 16.70% of families and 20.80% of the population were below the poverty line, including 28.90% of those under age 18 and 14.40% of those age 65 or over.
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