Union, SD
County market analytics
Public Record
Median Sale Price
$407.6K
12-Month Sales
24
-0.9%
1-Year Appreciation
-0.9%
Properties Tracked
1,981
Median Sale Price History
Top Cities
| Name | Median |
|---|---|
| Elk Point | $219.1K |
| North Sioux City | $550K |
Cities in Union
| City | Sales 12mo | Median |
|---|---|---|
| Elk Point | 4 | $219.1K |
| North Sioux City | 1 | $550K |
Recent Sales
| Date | Address | City | Price |
|---|---|---|---|
| May 14, 2026 | N Canterbury Cir | North Sioux City | $550K |
| Apr 24, 2026 | Green Court Dr | Elk Point | $450K |
| Apr 22, 2026 | Country Club Dr | Elk Point | $29.5K |
| Mar 27, 2026 | Country Club Dr | Elk Point | $374K |
| Mar 20, 2026 | Country Club Dr | Elk Point | $23K |
| Feb 26, 2026 | 477th Ave | Alcester | $564.9K |
| Jan 21, 2026 | Country Club Dr | Elk Point | $415K |
| Dec 23, 2025 | Quiniela Dr | North Sioux City | $430K |
| Dec 15, 2025 | E Willow St | Beresford | $361.5K |
| Nov 20, 2025 | Country Club Dr | Elk Point | $366.5K |
| Nov 3, 2025 | Fawn Holw | Dakota Dunes | $535K |
| Oct 16, 2025 | S Court St | Elk Point | $275K |
| Sep 30, 2025 | Edgewater Ln | Dakota Dunes | $475K |
| Aug 27, 2025 | CATTAIL CT LOT 15 | No Sioux City | $55K |
| Jul 28, 2025 | Bay Hl | Dakota Dunes | $855K |
| Jul 21, 2025 | Crooked Tree Ln | Dakota Dunes | $859K |
| Jul 18, 2025 | E Clay St | Elk Point | $295K |
| Jul 1, 2025 | N Spanish Bay | Dakota Dunes | $140K |
| Jun 20, 2025 | Bobwhite Cir | Dakota Dunes | $340K |
| Jun 20, 2025 | Country Club Dr | Elk Point | $29.5K |
4-Quarter Forecast
Linear projection from past trendQuarterly trend
+4.6%
Implied 1-yr
+18.4%
2026 Q3
$405.9K
2026 Q4
$420.3K
Median Price — History + Forecast
Property type mix
Share by property type
Year-built distribution
Properties by build era
Map
Recent top sales — most expensive
| Address | City | Sale date | Sale price |
|---|---|---|---|
| 868 N SPANISH BAY | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| 866 N SPANISH BAY | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| 890 N SPANISH BAY | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| N Spanish Bay | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
| 870 N SPANISH BAY | Dakota Dunes | Jan 3, 2020 | $4,883,939 |
Other counties in South Dakota
How Union ranks in South Dakota
1-year appreciation
#9 of 41
Median price
#5 of 41
Frequently asked about Union County
What is the median sale price in Union County?
The median sale price in Union County over the last 12 months is $407.6K, based on 24 transactions.
How fast are home prices appreciating in Union County?
Union County home prices have changed -0.9% year-over-year on a median basis.
How many sales happen each year in Union County?
Roughly 24 home sales were recorded in Union County over the trailing 12 months.
What types of properties are most common in Union County?
single_family is the most common property type tracked in Union County.
When were most homes in Union County built?
Most homes in Union County were built in the 2000-2009 era.