South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico. The combined value of land and rural real estate for sale in Starr County, Texas, recently on Land.com was approximately $94 million. This represents around 9,000 acres of land for sale in Starr County. Starr County ranks 171st in Texas for the total acreage of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Starr County, Rio Grande City had 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.