Sweetwater County
Also known as Sweetwater County, Wyoming, Sweetwater County, WY
county in Wyoming, United States
Key facts
- Country
- United States
- State
- Wyoming
- Founded
- December 17, 1867
- Named after
- Sweetwater River
- Seat
- Green River
- Largest city
- Rock Springs
- Total
- 10,491 sq mi (27,170 km )
- Land
- 10,427 sq mi (27,010 km )
- Water
- 64 sq mi (170 km ) 0.6%
- Estimate 2025
- 41,267
- Density
- 4.0541/sq mi (1.5653/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
~10 min read
Article
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.
History