Sweetwater County Wyoming

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.
  • Country: United States
  • State: Wyoming
  • Founded: December 17, 1867
  • Named for: Sweetwater River
  • Seat: Green River
  • Largest city: Rock Springs
  • Area code: 307

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Data from: en.wikipedia.org