The value of all land and rural real estate for sale in Virginia's Buchanan County recently was almost $5 million, representing a combined 638 acres of land for sale in Buchanan County. Buchanan County ranks 103rd out of 133 counties in Virginia for the total number of acres of land currently advertised for sale. Of all farms and rural real estate for sale in Buchanan County, Grundy featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Virginia. Buchanan County is the 27th largest county (503 square miles) in Virginia. It's located in the Mountain Virginia region of Virginia.