Union County, SD Undeveloped Land for Sale

A recent survey of Land And Farm data totals around 1,000 acres of undeveloped land for sale in South Dakota's Union County, which was valued at a combined $5 million. The average size of undeveloped land for sale in Union County was 149 acres. Of the 66 counties in the state, Union County ranks 62nd in terms of 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 farms, ranches, hunting land and other land for sale in Union County.