Land for sale in West Virginia's Marion County recently totaled approximately $30 million and approximately 2,000 acres. Marion County ranks 20th in the Mountain State for the total number of acres of land currently advertised for sale. Of all locations in Marion County with farms and rural real estate for sale, Fairmont had the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of West Virginia. Marion County is West Virginia's 44th biggest county (311 square miles). It's located in the Northwest West Virginia region of West Virginia.