Union County is in Alleghenies & Valleys Pennsylvania. Of the 67 counties in the Keystone State, Union County ranks 64th in terms of size (203,358 acres). Pennsylvania's Union County includes 1,000 acres of undeveloped land for sale based on recent Land Network data. The combined market value of land for sale here was $1 million. The average price of undeveloped acreage for sale in Union County was $497,500. 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, deer, turkey, whitetail 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 land for sale on the Land Network to find your next commercial property or land investment.