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Johnston County
Also known as Johnston County, Oklahoma, Johnston County, OK
county in Oklahoma, United States
Key facts
- Country
- United States
- State
- Oklahoma
- Named after
- Douglas H. Johnston
- Seat
- Tishomingo
- Largest city
- Tishomingo
- Total
- 658 sq mi (1,700 km )
- Land
- 643 sq mi (1,670 km )
- Water
- 15 sq mi (39 km ) 2.3%
- Estimate 2025
- 10,448
- Density
- 16.0/sq mi (6.17/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
~8 min read
Article
Johnston County is a county located in the U.S. state of Oklahoma. As of the 2020 census, the population was 10,272. Its county seat is Tishomingo. It was established at statehood on November 16, 1907, and named for Douglas H. Johnston, a governor of the Chickasaw Nation.
Johnston County is part of the Texoma Region.