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. There was a combined $234 million of farms and ranches for sale in Texas's Hamilton County recently on Land.com. The total size of all Hamilton County farms and ranches for sale was nearly 100,000 acres. Hamilton County ranks 97th in the Lone Star State for the combined amount of land currently advertised for sale. There were three properties listed as sold in Hamilton County through the Land Network Comparable Sales Program. This represented a total value of $8,500,000. Of all locations in Hamilton County with farms and ranches for sale, Hamilton featured the most land for sale. Agriculture and farming drives the Hamilton County economy, with 1,001 farms recorded in the county during the U.S. Census in 2012. Farming activities in Hamilton County generate annual revenues of $1 million, the majority of which comes from livestock products. Hamilton County is the 195th largest county (836 square miles) in Texas. It's located in the Hill Country North Texas region of Texas.