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 all farms, ranches, hunting land and other land for sale in Madison County, Texas, recently was almost $58 million, representing a combined 4,125 acres of land for sale in Madison County. Madison County ranks 174th out of 254 counties in the Lone Star State for the total number of acres of land currently advertised for sale. There were four properties listed as sold in Madison County through the Land Network Comparable Sales Program. This represented a total value of $1,763,000. Of all farms, ranches, hunting land and other land for sale in Madison County, Madisonville featured the most land for sale. From an economic perspective, government and state-level services contribute most to Madison County's overall GDP. Madison County is Texas's 242nd largest county (472 square miles). It's located in the Brazos Texas region of the state.