Williams County, North Dakota
Williams County | |
|---|---|
The Williams County Courthouse in Williston. | |
Location within the U.S. state of North Dakota | |
North Dakota's location within the U.S. | |
| Coordinates: 48°21′21″N 103°30′05″W / 48.355765°N 103.501333°W | |
| Country | United States |
| State | North Dakota |
| Founded | March 2, 1891 (created) December 8, 1891 (organized) |
| Named after | Erastus Appleman Williams |
| Seat | Williston |
| Largest city | Williston |
| Area | |
• Total | 2,147.808 sq mi (5,562.80 km2) |
| • Land | 2,077.600 sq mi (5,380.96 km2) |
| • Water | 70.208 sq mi (181.84 km2) 3.27% |
| Population (2020) | |
• Total | 40,950 |
• Estimate (2024) | 40,763 |
| • Density | 19.619/sq mi (7.575/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Area code | 701 |
| Congressional district | At-large |
| Website | williamsnd.com |
Williams County is located on the western border of the U.S. state of North Dakota, next to Montana. As of the 2020 census, the population was 40,950, and was estimated to be 40,763 in 2024, making it the fifth-most populous county in North Dakota. The county seat and the largest city is Williston.
The Williston Micropolitan Statistical Area includes all of Williams County. It is bordered on the south by the upper Missouri River, whose confluence with its tributary Yellowstone River is located just east of the border with Montana.