Sweetwater is the county seat of Nolan County, Texas, United States. The population was 11,415 at the 2000 census.
At Sweetwater during World War II, the Women Airforce Service Pilots were trained under the direction of the famed aviatrix Jacqueline Cochran at the former Avenger Field. The airstrip closed abruptly at the end of the war. The women were not recognized for having served in the armed forces until 1977, when U.S. Senator Barry M. Goldwater of Arizona and Colonel Bruce Arnold, late son of General Hap Arnold, persisted in obtaining their official recognition as military veterans. In 1970, the field became the site of Texas State Technical College in Sweetwater.
Parts of the south side of Sweetwater were devastated by an estimated EF3 tornado that swept through town early in the morning of April 19, 1986.