South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico. There was a combined nearly $3 million of land and rural real estate for sale in McMullen County, Texas, recently on Land.com. The total size of all McMullen County farms, ranches, hunting land and other land for sale was 2,000 acres. McMullen County ranks 238th in the Lone Star State for the combined amount of land currently advertised for sale. There were two properties listed as sold in McMullen County through the Land Network Comparable Sales Program. This represented a total value of $522,250. Tilden had the most land for sale. Economically speaking, McMullen County's is largely dependent on mining and mineral extraction-related businesses and services. McMullen County is the 46th biggest county (1,156 square miles) in Texas. It's located in the Rio Grande Plains Texas region of Texas.