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 value of all land and rural real estate for sale in Texas's Starr County recently was almost $73 million, representing a combined 14,184 acres of land for sale in Starr County. Starr County ranks 169th in Texas for the total acreage of land currently advertised for sale. Of all land and rural real estate for sale in Starr County, Rio Grande City had the most land for sale. Starr County is Texas's 41st largest county (1,229 square miles). It's located in the Rio Grande Plains Texas region of the state.