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 land for sale in Washington County recently was almost $477 million, representing a combined 9,938 acres of land for sale in Washington County. Washington County ranks 51st out of 254 counties in the Lone Star State for the combined amount of land currently advertised for sale. There were eight properties listed as sold in Washington County through the Land Network Comparable Sales Program. This represented a total value of $6,700,625. Of all locations in Washington County with farms, ranches, hunting land and other land for sale, Brenham featured the most land for sale. Manufacturing and related services are the largest economic sectors in Washington County. Washington County is Texas's 233rd biggest county (621 square miles). It's located in the Brazos Texas region of the state.