Union County is in Alleghenies & Valleys Pennsylvania. Of the 67 counties in the state, 317-square-mile Union County ranks 64th by size. A recent survey of Land Network data records around 1,000 acres of undeveloped land for sale in Pennsylvania's Union County, which is valued at a combined $1 million. The average price of undeveloped land for sale in Union County was $238,666. Some suggested uses for undeveloped land currently for sale in Union County include for hunting/fishing, commercial, and homestead use. Some common wildlife species to be found on undeveloped land for sale in Union County include bear, whitetail deer, deer, turkey, blacktail deer and pheasant. Current commercial applications for commercial property for sale in Union County include for hunting/fishing, commercial and homestead use. Browse all Pennsylvania undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.