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 Texas's Coryell County recently, representing a combined around $308 million in Coryell County farms and ranches for sale. Coryell County ranks 53rd in the state for the total number of acres of land currently advertised for sale. Gatesville had the most land for sale. Government and state-level services are the main economic drivers in Coryell County. Coryell County is the 71st largest county (1,056 square miles) in Texas. It's located in the Blacklands North Texas region of Texas.