Eldorado is the only city in and the county seat of Schleicher County, Texas, United States. The population was 1,951 at the 2010 census. Eldorado is located on U.S. Highway 277, some 21 miles (34 km) north of Sonora and 43 miles (69 km) south of San Angelo, Texas.

Schleicher County is a county located on the Edwards Plateau in the U.S. state of Texas. As of the 2020 census, its population was 2,451. Its county seat is Eldorado. The county was created in 1887 and organized in 1901. It is named for Gustav Schleicher, a German immigrant who became a surveyor and politician.