36°44′50″N 95°58′50″W / 36.747206°N 95.980597°W
Washington County | |
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![]() Location within the U.S. state of Oklahoma | |
![]() Oklahoma's location within the U.S. | |
Coordinates: 36°44′50″N 95°58′50″W / 36.747206°N 95.980597°W | |
Country | ![]() |
State | ![]() |
Founded | 1907 |
Named for | George Washington |
Seat | Bartlesville |
Largest city | Bartlesville |
Area | |
• Total | 424 sq mi (1,100 km2) |
• Land | 415 sq mi (1,070 km2) |
• Water | 8.8 sq mi (23 km2) 2.1% |
Population (2020) | |
• Total | 52,455 |
• Density | 120/sq mi (48/km2) |
Congressional district | 2nd |
Website | www |
Washington County is a county located in the northeastern part of the U.S. state of Oklahoma. As of the 2020 census, the population was 52,455.[1] Its county seat is Bartlesville.[2] Named for President George Washington, it is the smallest county in Oklahoma in total area,[3] adjacent to the largest county in Oklahoma, Osage County.
Washington County comprises the Bartlesville, OK micropolitan statistical area, which is also included in the Tulsa-Muskogee-Bartlesville, OK combined statistical area. It is located along the border with Kansas.
census
was invoked but never defined (see the help page).