A combined around 1,000 acres were listed for sale in West Virginia's Clay County recently; the combined value of all Clay County farms and rural land for sale was almost $3 million. Clay County ranks 43rd in the Mountain State for the total acreage of land currently advertised for sale. Among cities in Clay County with land for sale, Clay had the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of West Virginia. Clay County is the 37th largest county (343 square miles) in West Virginia. It's located in the Southwest West Virginia region of the state.