South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico. A total of around 5,000 acres were listed for sale in Texas's Willacy County recently, representing a total value of almost $29 million in Willacy County farms, ranches, hunting land and other land for sale. Willacy County ranks 204th out of 254 counties in the Lone Star State for the total number of acres of land currently advertised for sale. Raymondville had the most land for sale. Willacy County is Texas's 209th largest county (784 square miles). It's located in the Lower Rio Grande Valley Texas region of the state.