Mercer County is in Great Lakes & Wilds Pennsylvania. Of the 67 counties in the state, 682-square-mile Mercer County ranks 33rd by size. Recent listings of undeveloped land for sale in Pennsylvania's Mercer County totals almost 1,000 acres and a combined market value of around $3 million. The most common type of land for sale by combined acreage in Mercer County is residential property. The average price of undeveloped acreage for sale in Mercer County was $250,914. 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, whitetail deer, deer, turkey 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.