Stanley County | |
|---|---|
 Watercolor drawing of Fort Pierre Chouteau. Dated 1854. | |
 Location within the U.S. state of South Dakota | |
 South Dakota's location within the U.S. | |
| Coordinates: 44°24′N 100°45′W / 44.4°N 100.75°W | |
| Country |  United States |
| State |  South Dakota |
| Founded | 1873 (created) 1890 (organized) |
| Named for | David S. Stanley |
| Seat | Fort Pierre |
| Largest city | Fort Pierre |
| Area | |
• Total | 1,517 sq mi (3,930 km2) |
| • Land | 1,444 sq mi (3,740 km2) |
| • Water | 73 sq mi (190 km2) 4.8% |
| Population (2020) | |
• Total | 2,980 |
• Estimate (2023) | 3,043  |
| • Density | 2.0/sq mi (0.76/km2) |
| Time zones | |
| western portion | UTC−7 (Mountain) |
| • Summer (DST) | UTC−6 (MDT) |
| eastern portion | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | At-large |
| Website | www |
Stanley County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 2,980.[1] Its county seat is Fort Pierre.[2] The county was created in 1873, and was organized in 1890.[3] It is named for David S. Stanley, a commander at Fort Sully from 1866 to 1874, which was located nearby.[4]
Stanley County is included in the Pierre, SD Micropolitan Statistical Area.
- ^ "State & County QuickFacts". United States Census Bureau. Retrieved March 20, 2024.
- ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
- ^ "Dakota Territory, South Dakota, and North Dakota: Individual County Chronologies". Dakota Territory Atlas of Historical County Boundaries. The Newberry Library. 2006. Archived from the original on April 2, 2018. Retrieved March 31, 2015.
- ^ John Andrews. "Explorers, Cowboys and Indians". www.southdakotamagazine.com. Retrieved March 18, 2020.