Union County, SD Housing Market
The median sale price of a home in Union County was $379K over the last 3 months, up 31.2% since the same period last year. The median sale price per square foot in Union County is $170, up 4.9% since last year.
Union County Housing Market Trends
Over the three months ending September 2026, Union County home prices were up 31.2% compared to the same period last year, selling for a median price of $379K. On average, homes in Union County sell after 56 days on the market compared to 21 days last year. There were 20 homes sold in September this year, up from 13 last year.

How much is your home worth? Track your home’s value and compare it to nearby sales.
How hot is the Union County housing market?
View houses in Union County that sold recently
Recently sold homes
- $562,500 Last Sold Price3 beds3.5 baths2,824 sq ft349A Lakeshore Dr, Mccook Lake, SD 57049List Price$575,000Sale to List2% under listDays on Market218 days349A Lakeshore Dr, Mccook Lake, SD 57049
- $200,000 Last Sold Price3 beds1 bath1,104 sq ft32900 Lambert Pl, Jefferson, SD 57038List Price$225,000Sale to List11% under listDays on Market102 days32900 Lambert Pl, Jefferson, SD 57038
- $240,000 Last Sold Price3 beds2.5 baths2,392 sq ft210 S Walnut St, Elk Point, SD 57025List Price$249,950Sale to List4% under listDays on Market90 days210 S Walnut St, Elk Point, SD 57025
- $425,000 Last Sold Price3 beds2 baths1,528 sq ft200 S Canterbury Cir, North Sioux City, IA 57049List Price$425,000Sale to List0% over listDays on Market53 days200 S Canterbury Cir, North Sioux City, IA 57049
- $62,000 Last Sold Price3 beds1 bath1,008 sq ft15 Alcoma Dr, Mccook Lake, SD 57049List Price$62,000Sale to List0% over listDays on Market201 days15 Alcoma Dr, Mccook Lake, SD 57049
- $725,000 Last Sold Price4 beds3.5 baths3,752 sq ft942 Spyglass Cir, Dakota Dunes, SD 57049List Price$749,000Sale to List3% under listDays on Market134 days942 Spyglass Cir, Dakota Dunes, SD 57049
- $123,5001 bed1 bath780 sq ft1722 La Plante Ave, Sioux City, IA 51109List Price—Sale to List—Days on Market—1722 La Plante Ave, Sioux City, IA 51109
- $125,000 Last Sold Price1 bed1 bath832 sq ft302 N 2nd St St, Beresford, SD 57004List Price$130,000Sale to List4% under listDays on Market83 days302 N 2nd St St, Beresford, SD 57004
See all recently sold homes in Union County.
See listings
Schools in Union County
- Elementary
- Middle
- High
GreatSchools Rating
8/10 Riverside Elementary School Public • PreK-5 | 219 Students | 2 reviews |
8/10 Alcester-Hudson Elementary - 04 Public • K-6 | 169 Students | 1 reviews |
7/10 Beresford Elementary - 02 Public • K-5 | 269 Students | 3 reviews |
7/10 Ponca Elementary School Public • 3-6 | 128 Students | N/A |
6/10 Loess Hills Elementary Public • PreK-5 | 536 Students | N/A |
Climate's impact on Union County housing
Learn about natural hazards and environmental risks, such as floods, fires, wind, and heat that could impact homes in Union County.
Flood Factor - Severe
Flood Factor

Fire Factor - Moderate
Fire Factor

Wind Factor - Minor
Wind Factor

Heat Factor - Moderate
Heat Factor

More real estate resources for Union County
New Listings in Union County
City Housing Markets
Nearby County Housing Markets
City Listings
Nearby County Listings
Find us
Subsidiaries
Affiliated Business
Copyright: © 2026 Redfin. All rights reserved.
Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.
Do not sell or share my personal information.
REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.
California DRE #01521930
Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures
New Mexico Real Estate Licenses
TREC: Info About Brokerage Services, Consumer Protection Notice
All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.
Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.
If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.
REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.









United States
Canada