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COUNTY · 1990 CENSUS

Union County

South Dakota · 10,189 residents · 460.757 sq mi
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The short version

Union County has notably lower household income than the US average, with a median household income of $22,274. Population has fallen 19% since 2000, a loss of 2,395 residents. Median home value is $37,600.

At a glance
Lower income
below the US median
US median: $30,130
Older
median age 35.0
US median: 33.0
Less educated
14% hold a bachelor's degree
US average: 20%
More affordable
home values down 42%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
10,189
−19%vs 2000
vs 12,584 in 2000
1990 – 2025
Median age
35.0
−5%vs 2000
vs 36.9 in 2000
US average: 33.0
Population, 1990 – 2024
9K12K14K16K18K1990201020202024Union County
202417K
1990201020202024
Age distribution, 1990
Under 57.1%(725)
US avg: 7.3%
5 to 98.4%(858)
US avg: 7.3%
10 to 149.1%(931)
US avg: 6.9%
15 to 196.8%(693)
US avg: 7.1%
20 to 244.6%(466)
US avg: 7.5%
25 to 3413.9%(1,420)
US avg: 17.5%
35 to 4414%(1,429)
US avg: 15.1%
45 to 549.9%(1,012)
US avg: 10.2%
55 to 649.4%(962)
US avg: 8.5%
65 to 749%(918)
US avg: 7.3%
75 to 845.1%(524)
US avg: 4%
85 and over2.5%(251)
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$22,274
−34%inflation adjusted, since 2000
vs $44,790 in 2000
US average: $30,130
1990 – 2024
Per capita income
$9,997
−59%vs 2000
vs $24,355 in 2000
US average: $14,340
Poverty rate
13.0%
+7.5 ptsvs 2000
vs 5.5% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$37,600
−42%inflation adjusted, since 2000
vs $85,200 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$266
−31%inflation adjusted, since 2000
vs $505 in 2000
US average: $450
Owner-occupied
72.7%
−1.7 ptsvs 2000
vs 74.4% in 2000
27.3% rent
RELATED:See current rent listings in Union County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic96%(12,081)
Black0.3%(40)
Hispanic / Latino1.3%(158)
Asian1.3%(167)
Other0%
1990
White, non-Hispanic99.1%(10,096)
Black0.1%(10)
Hispanic / Latino0.9%(91)
Asian0.3%(34)
Other0.5%(49)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican4.5%(765)
Nicaraguan0.3%(53)
Cuban0%(2)
Asian origin
Filipino0.5%(81)
Asian Indian0.3%(51)
Laotian0.1%(20)
Korean0%(7)
Chinese0%(5)
Thai0%(4)
Pacific Islander origin
Marshallese0.1%(18)
Ancestry
German34.7%(5,920)
Irish14.2%(2,423)
Norwegian8.2%(1,406)
English8.2%(1,399)
American4.9%(829)
French4.5%(763)
Dutch4.3%(742)
Swedish4.2%(719)
Danish3.2%(549)
Czech2.2%(382)
Polish1.9%(316)
Scottish1.4%(237)
+ 17 more ancestry groups with data
Ukrainian1.2%(199)
Italian0.9%(160)
Scotch-Irish0.5%(90)
Welsh0.5%(80)
Swiss0.4%(62)
Russian0.2%(38)
British0.2%(26)
Armenian0.1%(24)
Belgian0.1%(22)
Croatian0.1%(16)
Arab0%(8)
Greek0%(6)
RANKED:Largest German population · Largest Irish population · Largest Norwegian population · Largest English population · Largest American population
Section 05

Education

Bachelor's degree or higher
13.9%
−12.4 ptsvs 2000
vs 26.3% in 2000
US average: 20.3%
High school or higher
74.2%
−12.9 ptsvs 2000
vs 87.2% in 2000
US average: 75.2%
Graduate degree
4.8%
−4.0 ptsvs 2000
vs 8.8% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
27.8 min
+123%vs 2000
vs 12.5 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)
Men 15+
Never married27.5%(1,938)
Married63.3%(4,458)
Widowed2.5%(178)
Divorced6.7%(470)
Women 15+
Never married18.9%(1,263)
Married65.5%(4,385)
Widowed7.9%(530)
Divorced7.7%(519)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

Places similar to Union County

Grand County
Pop 16,496
Gunnison County
Pop 17,439
Pike County
Pop 20,932
Greene County
Pop 21,367
Places similar to Union County
Head to head

Compare Union County to nearby counties

UNION COUNTY VS
Clay County
Income$56,850+155%
Home value$232,300+518%
Population15,031−14%
SEE FULL COMPARISON →
UNION COUNTY VS
Plymouth County
Income$83,251+274%
Home value$228,900+509%
Population25,697+48%
SEE FULL COMPARISON →
UNION COUNTY VS
Dixon County
Income$72,454+225%
Home value$155,900+315%
Population5,602−68%
SEE FULL COMPARISON →
UNION COUNTY VS
Sioux County
Income$86,098+287%
Home value$250,100+565%
Population36,774+111%
SEE FULL COMPARISON →
Frequently asked

How many people live in Union County, South Dakota?

Union County, South Dakota has about 10,189 residents according to the 1990 Census.

What is the median household income in Union County, South Dakota?

The typical household in Union County, South Dakota earns about $22,274 a year. Half of households make more than that, and half make less.

Is Union County, South Dakota expensive?

In Union County, South Dakota, the median home is worth about $37,600, and the typical rent is about $266 a month.

How educated are people in Union County, South Dakota?

About 13.9% of adults age 25 and over in Union County, South Dakota hold a bachelor's degree or higher.

What is the poverty rate in Union County, South Dakota?

About 13.0% of people in Union County, South Dakota live below the federal poverty line.

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Explore from here

4 census tracts
Census Tract 203.01Census Tract 203.02Census Tract 201Census Tract 202
4 ZIP codes
ZIP 57049ZIP 57025ZIP 57038ZIP 57001
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →