Sweetwater County, Wyoming
Sweetwater County | |
|---|---|
Rock Springs City Hall, 2007 | |
Location within the U.S. state of Wyoming | |
Wyoming's location within the U.S. | |
| Coordinates: 41°40′N 108°53′W / 41.66°N 108.89°W | |
| Country | United States |
| State | Wyoming |
| Founded | December 17, 1867 |
| Named after | Sweetwater River |
| Seat | Green River |
| Largest city | Rock Springs |
| Area | |
• Total | 10,491 sq mi (27,170 km2) |
| • Land | 10,427 sq mi (27,010 km2) |
| • Water | 64 sq mi (170 km2) 0.6% |
| Population (2020) | |
• Total | 42,272 |
• Estimate (2024) | 41,273 |
| • Density | 4.0/sq mi (1.6/km2) |
| Time zone | UTC−7 (Mountain) |
| • Summer (DST) | UTC−6 (MDT) |
| Area code | 307 |
| Congressional district | At-large |
| Website | sweetwatercountywy |
Sweetwater County is a county in southwestern Wyoming, United States. As of the 2020 United States census, the population was 42,272, making it the fourth-most populous county in Wyoming. Its county seat is Green River. By area, it is the largest county in Wyoming. Its southern boundary line abuts the north lines of the states of Colorado and Utah. Sweetwater County comprises the Rock Springs, Green River, Wyoming Micropolitan Statistical Area.