Sioux County | |
|---|---|
.jpg) Postcard. Historic Sioux County Courthouse at Fort Yates, North Dakota. | |
 Location within the U.S. state of North Dakota | |
 North Dakota's location within the U.S. | |
| Coordinates: 46°07′N 101°03′W / 46.11°N 101.05°W | |
| Country |  United States |
| State |  North Dakota |
| Founded | September 3, 1914 (created) September 12, 1914 (organized) |
| Named for | Sioux people |
| Seat | Fort Yates |
| Largest community | Cannon Ball |
| Area | |
• Total | 1,128 sq mi (2,920 km2) |
| • Land | 1,094 sq mi (2,830 km2) |
| • Water | 34 sq mi (90 km2) 3.0% |
| Population (2020) | |
• Total | 3,898 |
• Estimate (2022) | 3,711  |
| • Density | 3.5/sq mi (1.3/km2) |
| Time zones | |
| (eastern portion) | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| (western portion) | UTC−7 (Mountain) |
| • Summer (DST) | UTC−6 (MDT) |
| Congressional district | At-large |
Sioux County is a county located along the southern border of the U.S. state of North Dakota. As of the 2020 census, the population was 3,898.[1] Its eastern border is the Missouri River and its county seat is Fort Yates.[2]
- ^ "State & County QuickFacts". United States Census Bureau. Retrieved April 4, 2023.
- ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.