Union County, SD Housing Market Brief
county · SD · as of May 2026
What is Union County, SD’s Alpha Score?
The Alpha Score is a composite 0–100 index of market strength, a weighted blend of five dimensions. See the methodology.
Where is Union County, SD in its market cycle?
Union County, SD is classified as Growing — strengthening, with scores rising over recent months. This is a classification of recent (1–12 month) momentum, not a price forecast.
Union County, SD housing market data
| Metric | Value | YoY |
|---|---|---|
| Median Sale Price | $408K | ▼ -14.2% |
| Median Days on Market | 24 days | ▼ -46.7% |
| Months of Supply | 2.7 | ▼ -20.6% |
| Homes for Sale | 54 | ▼ -12.9% |
| Homes Sold | 20 | ▲ +11.1% |
| Median Price / Sq Ft | $158 | ▼ -6.2% |
| Sale-to-List Ratio | 97.6% | ▼ -0.9% |
How has Union County, SD’s Alpha Score moved?
Markets like Union County, SD
- Miami County, KS, KScounty55
- Haralson County, GA, GAcounty48
- Camden County, NC, NCcounty53
- King William County, VA, VAcounty47
- Los Alamos County, NM, NMcounty51
- Lake County, SD, SDcounty53
- Beaver County, UT, UTcounty53
- Morton County, ND, NDcounty55
- Morgan County, GA, GAcounty47
- Washington County, NE, NEcounty51
Frequently asked questions
Is Union County, SD a buyer's or seller's market?
As of May 2026, Union County, SD is classified as a Balanced Market, based on its Alpha Score of 55 out of 100. The classification reflects current price, inventory, affordability, economic, and rental-yield conditions.
Are home prices rising or falling in Union County, SD?
The median sale price in Union County, SD is $408K, having fallen 14.2% over the past year.
How affordable is Union County, SD?
Union County, SD scores 33 out of 100 on affordability — relatively unaffordable relative to local incomes and prevailing mortgage rates compared with other counties.
What's driving Union County, SD's Alpha Score?
Union County, SD's strongest dimension is Economic Strength (77/100) and its weakest is Affordability (33/100). The Alpha Score is a weighted blend of all five dimensions.
Want the live, interactive view of Union County, SD? Open the full market dashboard — charts, ZIP-level drill-down, and watchlist tracking. Explore the map or read the methodology.