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 farms, ranches, hunting land and other land for sale in McLennan County, Texas, recently on Land.com was nearly $597 million. This represents almost 100,000 acres of farms, ranches, and rural real estate for sale in McLennan County. McLennan County ranks 19th out of 254 counties in Texas for the total acreage of land currently advertised for sale. Of all locations in McLennan County with land and rural real estate for sale, Waco had the most land for sale. McLennan County is the 68th biggest county (1,060 square miles) in Texas. It's located in the Blacklands North Texas region of the state.