Corson County | |
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![]() Corson County Courthouse in McIntosh, South Dakota in 1993. This building was destroyed by fire on April 10, 2006. | |
![]() Location within the U.S. state of South Dakota | |
![]() South Dakota's location within the U.S. | |
Coordinates: 45°43′N 101°11′W / 45.72°N 101.18°W | |
Country | ![]() |
State | ![]() |
Founded | 1909 |
Named for | Dighton Corson |
Seat | McIntosh |
Largest city | McLaughlin |
Area | |
• Total | 2,530 sq mi (6,600 km2) |
• Land | 2,470 sq mi (6,400 km2) |
• Water | 60 sq mi (200 km2) 2.4% |
Population (2020) | |
• Total | 3,902 |
• Estimate (2023) | 3,782 ![]() |
• Density | 1.5/sq mi (0.60/km2) |
Time zone | UTC−7 (Mountain) |
• Summer (DST) | UTC−6 (MDT) |
Congressional district | At-large |
Website | corson |
Corson County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 3,902.[1] Its county seat is McIntosh.[2] The county was named for Dighton Corson, a native of Maine, who came to the Black Hills in 1876, and in 1877 began practicing law at Deadwood.
The county is encompassed within the Standing Rock Indian Reservation, which extends into North Dakota. The Lakota people reside primarily in the South Dakota part of the reservation; the Yanktonai and Dakota live in that part in North Dakota. The Grand River, a tributary of the Missouri River, runs through the reservation.