Union County

Union County has 17,081 residents across 4 ZIP codes with their own report. Median household income is $89,636, 19% above the South Dakota figure. The typical owner-occupied home is valued at $301,100, and 37% of adults 25 and over hold a bachelor’s degree or higher.

County · ACS 2020–2024 · Updated October 24, 2026

17,081residentsACS 2020–2024

$89,636median household incomeSouth Dakota: $75K

$301,100median home valueowner-occupied homes

90%of households have broadbandhome internet subscription

Union County in South DakotaZIP codes in Union County highlighted; the rest of South Dakota in grey

Map of South Dakota with Union County highlighted

Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · U.S. Census Bureau, 2024 Gazetteer and 2020 ZCTA relationship files

All 4 ZIP codes.

Colour shows where each zip code sits among the others in the table, from lowest to highest.

ZIP code	Residents	Household income	Home value	Owners	Bachelor's+	Broadband	Commute
57001	1,540	$70K	$177K	75%	24%	84%	24 min
57025	3,120	$95K	$238K	83%	31%	89%	23 min
57038	1,796	$106K	$332K	92%	40%	95%	22 min
57049	7,962	$93K	$432K	63%	44%	89%	15 min

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

People.

17,081 residents in 7,310 households, next to the South Dakota figure.

24%

under 18

19%

aged 18–34

20%

aged 65 and over

25%

of households are people living alone

59%

of households are married couples

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Homes.

7,588 housing units; the median owner-occupied home is valued at $301,100 (±$18,340).

73%

of households own their home

72%

of homes are detached single-family houses

17%

are in buildings with 5 or more units

are mobile homes

of housing units are vacant

$1,069

median gross rent a month

When homes were built

2020 or later1%

2010–201916%

2000–200920%

1990–199917%

1980–19894%

1970–197915%

1960–19694%

1950–19594%

1940–19492%

1939 or earlier16%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Income and work.

Household income and work, in 2024 dollars; median household income ±$5,949.

$89,636

median household income

6.2%

of people live below the poverty line

3.0%

unemployment rate

37%

of adults 25+ hold a bachelor’s degree or higher

The poverty rate uses the federal poverty thresholds, which vary with family size. It says nothing on its own about what a neighborhood is like to live in.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Getting around.

How workers aged 16 and over get to work, and how long it takes.

20 min

average commute to work

of commuters travel 45 minutes or more

89%

of workers drive or carpool

take public transportation

walk or bike

work from home

of households have no car

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Internet.

Home internet subscriptions.

90%

of households have a broadband subscription

have no internet access at home

American Community Survey figures are estimates from a rolling sample, averaged over 2020–2024. Each comes with a margin of error, which is wider in places with fewer people.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates