Jackson County

Also known as Jackson County, South Dakota, Jackson County, SD

county in South Dakota, United States

Key facts

Country: United States
State: South Dakota
Founded: 1883 (created), 1915 (organized)
Seat: Kadoka
Largest community: Kadoka
Total: 1,871 sq mi (4,850 km )
Land: 1,864 sq mi (4,830 km )
Water: 7.4 sq mi (19 km ) 0.4%
Estimate 2025: 2,666
Density: 1.505/sq mi (0.5812/km )
Time zone: UTC−7 ( Mountain )
Summer dst: UTC−6 ( MDT )
Congressional district

Article

An unusual specimen of calcite, densely intergrown with grains of sand. Collected from Rattlesnake Butte in Jackson County. Size: 6.9 x 5.4 x 3.9 cm. Jackson County sign on Interstate 90

Jackson County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 2,806. Its county seat is Kadoka. The county was created in 1883, and was organized in 1915. Washabaugh County was merged into Jackson County in 1983.