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. A total of almost 100,000 acres were listed for sale in Caldwell County, Texas, recently, representing a total value of nearly $318 million in Caldwell County ranches, farms, hunting land and other rural land and acreage for sale. Caldwell County ranks 84th out of 254 counties in the Lone Star State for the total number of acres of land currently advertised for sale. Among cities in Caldwell County with ranches, farms, hunting land and other rural land and acreage for sale, Lockhart had the most land for sale. Caldwell County is Texas's 239th largest county (547 square miles). It's located in the Blacklands South Texas region of Texas.