Sweetwater County

Sweetwater County is an administrative area in southwestern Wyoming with diverse terrain featuring rivers, mountains, and open plains. The region lies between Colorado and Utah borders and contains communities, agricultural land, and natural areas mixed together.

The area was established as Carter County in 1867 and renamed Sweetwater County in 1869 by the territorial government. The new name comes from the Sweetwater River that flows through the land.

The county reflects Native American heritage and pioneer legacies visible in place names and local traditions that visitors can encounter today. These marks show how different groups moved through and settled in the region over many generations.

Visitors should prepare for harsh weather and large distances between communities when exploring the area. Parks and wildlife areas provide outdoor access, while schools and educational facilities in towns support local services and activities.

Much of the Great Divide Basin sits within this county, where the Continental Divide splits and rejoins in an unusual way. In this rare area, water flows toward neither ocean.

Location: Wyoming

Inception: 1867

Capital city: Green River

Shares border with: Fremont County, Carbon County, Moffat County, Daggett County, Summit County, Uinta County, Lincoln County, Sublette County

Website: http://sweet.wy.us

GPS coordinates: 41.66000,-108.89000

Latest update: December 13, 2025 15:40