Douglas County | |
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![]() Douglas County Courthouse in Armour | |
![]() Location within the U.S. state of South Dakota | |
![]() South Dakota's location within the U.S. | |
Coordinates: 43°23′N 98°22′W / 43.39°N 98.36°W | |
Country | ![]() |
State | ![]() |
Founded | 1873 (created) 1882 (organized) |
Named for | Stephen A. Douglas |
Seat | Armour |
Largest city | Armour |
Area | |
• Total | 434 sq mi (1,120 km2) |
• Land | 432 sq mi (1,120 km2) |
• Water | 1.9 sq mi (5 km2) 0.4% |
Population (2020) | |
• Total | 2,835 |
• Estimate (2023) | 2,838 ![]() |
• Density | 6.5/sq mi (2.5/km2) |
Congressional district | At-large |
Website | douglas |
Douglas County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 2,835.[1] Its county seat is Armour.[2] The county was established in 1873 and organized in 1882.[3] It is named for Stephen Douglas,[4] Illinois political figure.