Data through September 2026 · updated 2026-11-07 · free, from Zillow, Realtor.com, the Census Bureau and other public sources
Typical home value$355,956+2.7% YoY · prices are rising
Market right nowBuyer's marketMore homes for sale than last year, 17% have cut their price
Income needed to buy, per year$77,164About 0.8× the local median income ($101,682): affordable for a typical household
Days on market56 daysFaster than a year ago: sellers have the edge
Next 12 months+2.9%Zillow expects prices to rise slightly
The typical home in Union County, SD is worth $355,956, up 2.7% from a year ago. That is slightly above what local incomes have historically supported: fair value is about $332,615, so the area is 7.0% overvalued. It is a buyer's market: homes take about 56 days to sell, listings are up 22% from a year ago, 17% of listings have had a price cut. Zillow expects prices to rise about 2.9% over the next year. A household needs about $77,164 a year to afford the typical home here at today's 7.18% mortgage rate (20% down, payment at 30% of income); the median household earns $101,682. Typical rent is $1,310 a month, or $1,464 for a house. In the latest IRS figures, 37 more people moved out than in.
Home value over time
Solid: typical home value · dashed: fair value (household income × the 20-year average price-to-income ratio). Sources: FHFA, Zillow, U.S. Census Bureau.
Prices and affordability
Typical home value
$355,956
Change in 1 year
+2.7%
Overvalued %
+7.0%
Show 7 more
Fair home value
$332,615
Change in 5 years
+21.4%
Zillow forecast, next 12 months
+2.9%
Home value to income
3.5×
Monthly mortgage payment (20% down)
$1,929
Income needed to afford it
$77,164
Property tax rate
1.10%
Rent and investing
Typical rent
$1,310
Typical rent for houses
$1,464
Price-to-rent ratio
22.6×
Show 3 more
HUD Fair Market Rent, 2 bedrooms
$1,194
Gross rental yield
4.42%
Cap rate (estimate)
2.87%
Market activity
Listings vs a year ago
+22.4%
Days on market
56
Listings with a price cut
17.0%
Show 3 more
Homes for sale
82
Pending sales per 100 listings
10
Asking price per sq ft
$174
People and jobs
Median household income
$101,682
Population change (1 year)
+0.2%
Unemployment rate
3.0%
Show 4 more
Population
17,402
Income adjusted for cost of living
$117,551
Net moves in (IRS)
−37
Cost of living (US = 100)
86.5
Schools, risk and environment
School rating (1 to 10)
6.5
FEMA hazard risk score (0 to 100)
37.1
Unhealthy air days a year
5
Show 4 more
Flood risk score
47.5
Wildfire risk score
77.6
Walkability (1 to 20)
7.1
Road, rail and air noise
56 dB
Questions people ask
Is Union County, SD overvalued?
Home prices in Union County, SD are slightly above what local incomes have historically supported: fair value is about $332,615, so the area is 7.0% overvalued.
Is Union County, SD a buyer's or seller's market?
Union County, SD is a buyer's market: homes take about 56 days to sell, listings are up 22% from a year ago, 17% of listings have had a price cut.
Are home prices going down in Union County, SD?
Home values in Union County, SD are up 2.7% over the last year. Zillow's forecast for the next 12 months is +2.9%.
How much do you need to earn to buy a home in Union County, SD?
A household needs about $77,164 a year to afford the typical home in Union County, SD at today's 7.18% mortgage rate (20% down, payment at 30% of income); the median household earns $101,682.