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 around 100,000 acres were listed for sale in Hamilton County recently, representing a total value of nearly $222 million in Hamilton County land and rural real estate for sale. Hamilton County ranks 94th in the state for the total number of acres of land currently advertised for sale. There were seven properties listed as sold in Hamilton County through the Land Network Comparable Sales Program. This represented a total value of $4,574,500. Hamilton had the most land for sale. Its economy is defined as agricultural, with 1,001 farms recorded in the county during the most recent 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.