Income needed to buy a home
Union County, SD
$123,534
a year in household income to buy the typical Union County home with 10% down.
The monthly math
Typical home value$358,600
Down payment (10%)$35,860
Loan$322,740
Principal and interest (7.40%)$2,235/mo
Property tax (1.12% a year)$334/mo
Homeowners insurance (estimate)$179/mo
Mortgage insurance$134/mo
Total monthly cost$2,882/mo
Income needed keeps housing at 28% of gross income, the lender rule of thumb.
What locals earn
A stretch
The typical household here earns $89,636 a year, 73% of what it takes.
In South Dakota
Union County ranks #45 of 50 for the income a home takes, from least to most.
Easiest to afford in South Dakota
| County | Typical home | Income needed |
|---|---|---|
| Jackson County | $141,213 | $46,473 |
| Walworth County | $137,130 | $47,240 |
| Bon Homme County | $163,660 | $56,274 |
| Corson County | $167,697 | $58,117 |
| Spink County | $174,248 | $59,180 |
Typical home value from the Zillow Home Value Index, August 2026. Rate is the Freddie Mac 30-year average for Oct 8, 2026. Property tax rate is total taxes paid divided by total home value in the county (U.S. Census, ACS 2020-2024). How it works.