Union County, SD Real Estate & Homes For Sale
142 homes
Use arrow keys to navigateNEW - 2 DAYS AGO0.25 ACRESCentury 21 ProLink
Use arrow keys to navigateNEW - 2 DAYS AGO
3D VIEW0.73 ACRESKeller Williams Siouxland
Use arrow keys to navigateNEW - 2 DAYS AGO0.29 ACRESHerrity & Associates
Use arrow keys to navigateOPEN SUN, 1-2PMUnited Real Estate Solutions
Use arrow keys to navigate3D VIEW1.34 ACRESCentury 21 ProLink
Use arrow keys to navigateFOR SALE BY OWNER0.26 ACRES
Use arrow keys to navigate4.69 ACRES
4.74 ACRESHerrity & Associates
0.26 ACRESUnited Real Estate Solutions
NEW CONSTRUCTIONDunes Realty, LLC
NEW CONSTRUCTIONDunes Realty, LLC
NEW CONSTRUCTION0.31 ACRESDunes Realty, LLC
3D VIEW0.6 ACRES
3.3 ACRES
FOR SALE BY OWNER
FOR SALE BY OWNER0.25 ACRES
3D VIEWUnited Real Estate Solutions
3D VIEW0.55 ACRESCentury 21 ProLink
3D VIEW6.41 ACRES
3D VIEW0.29 ACRES
FOR SALE BY OWNER1 ACRE
3D VIEW
0.52 ACRES
1.28 ACRESUnited Real Estate Solutions
0.29 ACRESCentury 21 ProLink
0.34 ACRESHerrity & Associates
0.37 ACRESKeller Williams Siouxland
Union County, SD Real Estate Trends
Learn about the Union County, SD housing market through trends and averages.Affordability of Living in Union County, SD
The median home value is $358,095
| Month | Median home value |
|---|---|
| June 2025 | $344k |
| July 2025 | $346k |
| August 2025 | $347k |
| September 2025 | $349k |
| October 2025 | $351k |
| November 2025 | $353k |
| December 2025 | $355k |
| January 2026 | $356k |
| February 2026 | $357k |
| March 2026 | $357k |
| April 2026 | $358k |
| May 2026 | $358k |
Trends and affordability stats are provided by third party data sources.
Average Home Value in Union County, SD, by Home Size
| Home Size | Home Value* |
|---|---|
| 2 bedrooms (See homes) | $237,015 |
| 3 bedrooms (See homes) | $328,178 |
| 4 bedrooms (See homes) | $415,684 |
The data relating to real estate for sale on this web site comes in part from the Internet Data Exchange Program of the REALTOR® Association of the Sioux Empire, Inc., Multiple Listing Service. Real estate listings held by brokerage firms other than Zillow, Inc. are marked with the Internet Data Exchange™ logo or the Internet Data Exchange thumbnail logo (a little black house) and detailed information about them includes the name of the listing brokers.
Information is deemed reliable but not guaranteed.
Copyright 2026 REALTOR® Association of the Sioux Empire, Inc., Inc. Multiple Listing Service. All rights reserved.
Information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing information is deemed reliable, but not guaranteed.