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 combined around 100,000 acres were listed for sale in Texas's Hamilton County recently; the value of all Hamilton County land for sale was around $228 million. Hamilton County ranks 80th out of 254 counties in the Lone Star State for the combined amount of land currently advertised for sale. There were four properties listed as sold in Hamilton County through the Land Network Comparable Sales Program. This represented a total value of $1,750,001. Among cities in Hamilton County with land and rural real estate for sale, Hamilton featured the most land for sale. Hamilton County has a large agricultural economy, with 1,001 farms recorded in the county during the latest U.S. Census. Farming activities in Hamilton County generate annual revenues of $1 million, the majority of which comes from livestock products. Hamilton County is Texas's 195th largest county (836 square miles). It's located in the Hill Country North Texas region of Texas.