Union County is in Southeast South Dakota. Of the 66 counties in the state, 467-square-mile Union County ranks 62nd by size. South Dakota's Union County has around 1,000 acres of commercial land and property for sale based on recent Land Network data. The combined market value of land for sale here was approximately $5 million. The average price of commercial land and property for sale in Union County was $340,982. Some suggested uses for commercial property currently for sale in Union County include for hunting/fishing, commercial, and residential single use. Some common wildlife species to be found on undeveloped land for sale in Union County include whitetail deer, mule deer, deer, turkey and grouse. Current commercial applications for commercial property for sale in Union County include for hunting/fishing, commercial and residential single use. Browse all South Dakota commercial land and property for sale on the Land Network to find your next commercial property or land investment.