South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico. Land for sale in Starr County recently totaled approximately $99 million and 7,000 acres. Starr County ranks 169th in Texas for the combined amount of land currently advertised for sale. Of all locations in Starr County with ranches, farms, hunting land and other rural land and acreage for sale, Rio Grande City featured the most land for sale. Starr County is the 41st biggest county (1,229 square miles) in Texas. It's located in the Rio Grande Plains Texas region of the state.