Union County, SD Residential Land for Sale

Recent listings of residential land and property for sale in Union County, South Dakota, total nearly 1,000 acres and a combined market value of $35 million. The average size of residential land and property for sale in Union County was 18 acres. Of the 66 counties in the state, 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.