Of 55 counties in the Mountain State, Mercer County ranks 28th by size (420 square miles). Mercer County is in Southeast West Virginia. There is roughly 1,000 acres of ranches for sale in West Virginia's Mercer County based on recent Land Network data. The combined market value of farmsand rural real estate for sale here is almost $2 million. Browse all Mercer County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Mercer County is residential property.