Sweetwater County is a county located in the U.S. state of Wyoming. In area, it is the largest county in the state. As of 2010, the population was 43,806. Its county seat is Green River[1]. It is north from the Colorado-Utah state line.
According to the United States Census Bureau, the county has a total area of 10,491 square miles (27,172 km²), of which 10,425 square miles (27,001 km²) is land and 66 square miles (171 km²) (0.63%) is water. The largest county in Wyoming, Sweetwater County is larger than six states and is the eighth largest county nationwide (not including boroughs and census areas in Alaska). Most of the Great Divide Basin lies within the county, comprising the county's northeast quadrant.