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 Frio County recently totaled nearly $185 million and almost 100,000 acres. Frio County ranks 151st in the Lone Star State for the total number of acres of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Frio County, Moore featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Texas. Frio County is the 50th largest county (1,134 square miles) in Texas. It's located in the Edwards Plateau South Texas region of Texas.