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 Zavala County, Texas, recently totaled nearly $111 million and around 100,000 acres. Zavala County ranks 215th out of 254 counties in the state for the total number of acres of land currently advertised for sale. La Pryor had the most land for sale. Zavala County is Texas's 33rd biggest county (1,301 square miles). It's located in the Edwards Plateau South Texas region of the state.