Some of the cities, towns, and places in Sweetwater County are Arrowhead Springs, Bairoil, Blairtown, Bryan, Clearview Acres, Eden, Farson, Granger, Green River, James Town, Linwood, Little America, McKinnon, North Rock Springs, Point of Rocks, Purple Sage, Reliance, Rock Springs, State of Utah, Superior, Sweeney Ranch, Table Rock, Wamsutter, Washam, Winton
Sweetwater County is a county in southwestern Wyoming, United States. As of the 2010 United States Census, the population was 43,806. 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.