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 approximately 100,000 acres were listed for sale in Washington County recently, representing a combined around $488 million in Washington County farms and ranches for sale. Washington County ranks 49th out of 254 counties in the 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. Brenham featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Washington County. Washington County is Texas's 233rd biggest county (621 square miles). It's located in the Brazos Texas region of Texas.