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Oklahoma County, Oklahoma facts for kids

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Oklahoma County
Oklahoma County Courthouse
Official seal of Oklahoma County
Map of Oklahoma highlighting Oklahoma County
Location within the U.S. state of Oklahoma
Map of the United States highlighting Oklahoma
Oklahoma's location within the U.S.
Country  United States
State  Oklahoma
Founded 1890
Seat Oklahoma City
Largest city Oklahoma City
 • Total 718 sq mi (1,860 km2)
 • Land 708.82 sq mi (1,835.8 km2)
 • Water 9.6 sq mi (25 km2)  1.3%%
 • Total 796,292 Increase
 • Density 1,111.6/sq mi (429.2/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional districts 4th, 5th

Oklahoma County is located in the central part of the U.S. state of Oklahoma. As of the 2010 census, the population was 718,633, making it the most populous county in Oklahoma. The county seat is Oklahoma City, the state capital and largest city.

Oklahoma County is at the heart of the Oklahoma City Metropolitan Statistical Area.

Oklahoma County is one of seven counties in the United States to share the same name as the state it is located in (the other six counties are Arkansas County, Hawaii County, Idaho County, Iowa County, New York County (known commonly as Manhattan), and Utah County), and the only one of the seven to contain the state capital, and one of two to contain a city of the same name as well.


Oklahoma County was originally called County Two and was one of seven counties established by the Organic Act of 1890.

County business initially took place in a building at the intersection of California Avenue and Robinson Street until the construction of the first Oklahoma County Courthouse at 520 West Main Street in the 1900s. In 1937, the county government was moved to a building at 321 Park Avenue, which now serves only as the county courthouse.


According to the U.S. Census Bureau, the county has a total area of 718 square miles (1,860 km2), of which 709 square miles (1,840 km2) is land and 9.6 square miles (25 km2) (1.3%) is water.

Major highways

  • I-35
  • I-40
  • I-44
  • I-235
  • I-240
  • US-62
  • US-66
  • US-77
  • US-270
  • Turner Turnpike
  • Kilpatrick Turnpike
  • SH-3
  • SH-3A
  • SH-66
  • SH-74
  • SH-77H
  • SH-152
  • SH-270

Adjacent counties

National protected area


Historical population
Census Pop.
1890 11,742
1900 25,915 120.7%
1910 85,232 228.9%
1920 116,307 36.5%
1930 221,738 90.6%
1940 244,159 10.1%
1950 325,352 33.3%
1960 439,506 35.1%
1970 526,805 19.9%
1980 568,933 8.0%
1990 599,611 5.4%
2000 660,448 10.1%
2010 718,633 8.8%
2020 796,292 10.8%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2019
USA Oklahoma County, Oklahoma age pyramid
Age pyramid for Oklahoma County, Oklahoma, based on census 2000 data.

As of the Census of 2010, there were 718,633 people, 277,615 households, and 172,572 families residing in the county. The population density was 1,013 people per square mile (391/km2). There were 319,828 housing units at an average density of 416 per square mile (161/km2). The racial makeup of the county was 64.6% White, 15.4% Black or African American, 3.5% Native American, 3% Asian, 0.1% Pacific Islander, 8.1% from other races, and 5.3% from two or more races. 15.1% of the population were Hispanic or Latino of any race. 12.4% were of German, 12.3% Mexican, 10.1% Irish, 7.9% English, and 7.7% American ancestries according to the Census 2010. 84.4% spoke English and 11.5% Spanish as their first language.

There were 277,615 households, out of which 28.5% had children under the age of 18 living with them, 43.1% were married couples living together, 15.4% had a female householder with no husband present, and 37.8% were non-families. 31.9% of all households were made up of individuals, and 9.7% 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 3.26.

In the county, the population was spread out, with 25.60% under the age of 18, 10.90% from 18 to 24, 30.00% from 25 to 44, 21.40% from 45 to 64, and 12.20% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 94.20 males. For every 100 females age 18 and over, there were 90.80 males.

The median income for a household in the county was $42,916, and the median income for a family was $54,721. The per capita income for the county was $25,723. About 11.70% of families and 15.30% of the population were below the poverty line, including 21.70% of those under age 18 and 8.60% of those age 65 or over.




Unincorporated communities

See also

Kids robot.svg In Spanish: Condado de Oklahoma para niños

National Hispanic Heritage Month on Kiddle
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Zoe Saldaña
Rosa Salazar
Sofía Vergara
Rita Hayworth
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