Union County is in Southeast South Dakota. Of the 66 counties in the state, Union County ranks 62nd in terms of size (467 square miles). There is about 1,000 acres of commercial land and property for sale in South Dakota's Union County based on recent Land Network data. The combined market value of land and rural real estate for sale here is roughly $4 million. The average price of commercial land and property for sale in Union County was $279,412. 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, turkey, deer 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 acreage for sale on the Land Network to find your next commercial property or land investment.