A total of around 2,000 acres were listed for sale in Washington County recently, representing a total value of approximately $233 million in Washington County farms and rural land for sale. Washington County ranks 16th out of 95 counties in the Volunteer State for the total acreage of land currently advertised for sale. Jonesborough featured the most land for sale. Government and state-level services are the main economic drivers in Washington County. Washington County is the 69th biggest county (329 square miles) in Tennessee. It's located in the Eastern Tennessee region of the state.