Washington County, Oklahoma

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Coordinates: 36°44′50″N 95°58′50″W / 36.747206°N 95.980597°W / 36.747206; -95.980597

Washington County is a county located in the U.S. state of Oklahoma. It is, in total area, the smallest county in Oklahoma, adjacent to the largest county in Oklahoma, Osage County. It is the second smallest county, by land only size, i.e., not including water. As of 2000, the population was 48,996. Its county seat is Bartlesville[1].



According to the U.S. Census Bureau, the county has a total area of 1,099 km² (424 mi²). 1,080 km² (417 mi²) of it is land and 19 km² (7 mi²) of it (1.73%) is water.

Adjacent counties


As of the census[2] of 2000, there were 48,996 people, 20,179 households, and 14,024 families residing in the county. The population density was 45/km² (118/mi²). There were 22,250 housing units at an average density of 21/km² (53/mi²). The racial makeup of the county was 81.17% White, 2.49% Black or African American, 8.60% Native American, 0.74% Asian, 0.01% Pacific Islander, 0.91% from other races, and 6.07% from two or more races. 2.64% of the population were Hispanic or Latino of any race.

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