Bastrop County is in Central Texas in the U.S. state of Texas. Its county seat is Bastrop. As of the 2020 census, the population was 97,216. Bastrop County is included in the Austin–Round Rock, Texas,
The Bastrop County Courthouse in Bastrop is designed in classical revival style. Built in 1883, the Courthouse and Jail Complex were listed in the National Register of Historic Places on November 20, 1975.