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 10,000 acres were listed for sale in Washington County recently, representing a combined approximately $176 million in Washington County farms, ranches, and rural real estate for sale. Washington County ranks 46th in the state for the total acreage of land currently advertised for sale. There were 18 properties listed as sold in Washington County through the Lands of America Comparable Sales Program. This represented a total value of $12,863,372. 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.