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 overall value of farms, ranches, hunting land and other land for sale in McMullen County recently on Land.com was nearly $21 million. This represents nearly 6,000 acres of farms, ranches, hunting land and other land for sale in McMullen County. McMullen County ranks 228th out of 254 counties in Texas for the combined amount of land currently advertised for sale. Among cities in McMullen County with farms, ranches, and rural real estate for sale, Tilden featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Texas. McMullen County is the 46th largest county (1,156 square miles) in Texas. It's located in the Rio Grande Plains Texas region of Texas.