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Market MapSouth DakotaUnion

Union County

South DakotaPopulation: 16,700
68
/100
Buy
#145 of 1,000 counties
#18 in South Dakota (50 counties)
Analysis by RentalCalcs Research·Independent data + algorithm-driven scoring
Updated January 1, 2026Sources: Zillow ZHVI, Zillow ZORI, US Census ACS, Tax Foundation

Market Snapshot

$350,909
Median Home Price
50% above national median
$20,836/mo
Est. Rent
Based on regional data
5.94%
Rent-to-Price Ratio
Estimated from price data
+$0
Est. Monthly Cash Flow
With 20% down at 6.9% rate

Price History

Historical data from Zillow ZHVI/ZORI

Score Breakdown

Overall Investment Score
68/100
68
Cash Flow(30%)
0/100

Rent data not available for cash flow calculation.

Appreciation(25%)
82/100

Based on 3.6% YoY price growth. Moderate growth (3-8%) scores highest.

Stability(25%)
50/100

Population data not available.

Affordability(20%)
66/100

Price-to-income ratio of 4.3x. Lower ratios indicate more affordable markets.

Scores are calculated using real Zillow home value and rent data, Census population data, and economic indicators. The weighted average produces the overall investment score. Markets with missing rent data use estimated values based on regional averages.

Investment Outlook

Strengths

No significant strengths identified based on current data.

Challenges

  • -Negative leverage (cap rate 0.0% < mortgage rate 6.9%)
  • -Limited rent data (estimates used)

Economic Indicators

Population
16,700
Median Income
$82,036
vs $57,059 national est.
Unemployment Rate
—
Data pending
Price-to-Income
4.3x
Moderately affordable

Who this market fits

Skip if
  • −You can't tolerate negative leverage (cap rate below mortgage rate today)

Compare to Nearby Counties

CountyVerdict
DavisonSD
69$241,475Est. pending—BuyView
TurnerSD
69$292,690Est. pending—BuyView
MoodySD
69$286,418Est. pending—BuyView
CurrentUnionSD
68$350,909Est. pending—Buy
Charles MixSD
67$272,017Est. pending—BuyView
BrownSD
66$229,274$1,0035.25%BuyView

The Bottom Line

BuyUnion offers solid investment potential with positive cash flow at typical financing.

Union County in South Dakota scores 68/100, ranking #145 of 1,000 US counties (top 19%). At 20% down and current rates, a median-priced rental roughly breaks even on cash flow. The deal works on appreciation or with better terms, not on month-one cash flow.

Monthly Cash Flow
+$0/mo
Cap Rate
0.0%
Cash-on-Cash
0.0%

Related markets

Markets like Union with stronger cash flow

  • Brown County for cash-flow rentals

Cheaper alternatives to Union

  • Brown County, lower entry price
  • Davison County, lower entry price
  • Charles Mix County, lower entry price

Head-to-head comparisons

  • Union vs Davison for rentals
  • Union vs Charles Mix for rentals
  • Union vs Turner for rentals
All counties in South Dakota →

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