Union County, SD Residential Land for Sale

South Dakota's Union County includes almost 1,000 acres of residential land and property for sale based on all listings recorded for sale on Land And Farm. The combined market value of this land and property for sale is around $19 million. The average size of residential land and property for sale in Union County was one acres. Of the 66 counties in South Dakota, Union County is 62nd in terms of its size. Union County is in the Southeast South Dakota region. To find more land for sale in South Dakota, sign up for our South Dakota land-for-sale email alerts to get notifications about new land for sale in Union County matching your search parameters on Land And Farm! You can also search Land And Farm to find real estate agents in South Dakota who specialize in selling land, rural acreage and other recreational property in regions throughout South Dakota, including land and farms for sale in Union County.