Mercer County is in Great Lakes & Wilds Pennsylvania. Of the 67 counties in the Keystone State, Mercer County ranks 33rd in terms of size (682 square miles). There is nearly 1,000 acres of undeveloped land for sale in Mercer County, Pennsylvania, based on recent Land Network data. The combined market value of farms and rural land for sale here is nearly $2 million. The average price of undeveloped land for sale in Mercer County was $105,619. Some suggested uses for undeveloped land currently for sale in Mercer County include for hunting/fishing, commercial, and homestead use. Some common wildlife species to be found on undeveloped land for sale in Mercer County include bear, deer, turkey, whitetail deer and pheasant. Current commercial applications for commercial property for sale in Mercer County include for hunting/fishing, commercial and homestead use. Browse all Pennsylvania undeveloped land for sale on the Land Network to find your next commercial property or land investment.