The central region of Texas covers the state's three largest cities: Houston, Dallas-Fort Worth and San Antonio. The limestone terrain of Texas Hill Country lies in Central Texas, as do the state's three largest rivers, the Trinity, the Brazos and the Colorado. The value of all farms, ranches, and rural real estate for sale in Texas's Limestone County recently was almost $148 million, representing a combined 10,719 acres of land for sale in Limestone County. Limestone County ranks 92nd out of 254 counties in the Lone Star State for the total number of acres of land currently advertised for sale. There were six properties listed as sold in Limestone County through the Land Network Comparable Sales Program. This represented a total value of $2,968,000. Mexia featured the most land for sale. Government and state-level services are the main economic drivers in Limestone County. Limestone County is Texas's 108th largest county (933 square miles). It's located in the Blacklands North Texas region of the state.