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CITY

Union

Illinois · 684 residents (2025 est.) · 0.836 sq mi
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The short version

Union has roughly average household income, with a median household income of $89,844. Population has held roughly steady since 2000. 16% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $252,200. It sits in the top 10% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 39.0
US median: 38.9
Less educated
16% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
624
+8%since 2000
from 576 in 2000
1990 – 2025
Population density
746 / sq mi
+8%since 2000
from 689 / sq mi in 2000
US average: 281
Median age
39.0
+9%since 2000
from 35.9 in 2000
US average: 38.9

PEP 2025 EST:684 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
4575386196997801990201020202024Union
2024624
1990201020202024
Section 02

Income & economy

Median household income
$89,844
−13%inflation adjusted, since 2000
from $56,528 in 2000
US average: $82,259
1990 – 2024
Per capita income
$46,707
+120%since 2000
from $21,218 in 2000
US average: $44,673
Households earning $100K+
63.3%
+32.1 ptssince 2009
from 31.2% in 2009
US average: 53.3%
Poverty rate
7.5%
+2.3 ptssince 2000
from 5.2% in 2000
US average: 12.5%
Income inequality (Gini)
0.400
+10%since 2010
from 0.365 in 2010
US average: 0.476
Workforce by industry, 2024
Wholesale trade25.5%
US avg: 6.9%
Retail trade9.9%
US avg: 9.9%
Information9.9%
US avg: 10.8%
Transportation & warehousing6.8%
US avg: 2.2%
Other services5.2%
US avg: 6.7%
Public administration4.4%
US avg: 4.8%
Finance & insurance2.7%
US avg: 5.9%
Professional, scientific, technical2.7%
US avg: 5.1%
Agriculture, forestry, fishing1.9%
US avg: 1.6%
Construction1.9%
US avg: 1.2%
Arts, entertainment, food1.1%
US avg: 1.9%
Manufacturing0%
US avg: 0.4%
Education & health services0%
US avg: 0.9%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$252,200
+3%inflation adjusted, since 2000
from $134,000 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,692
+55%inflation adjusted, since 2000
from $600 in 2000
US average: $1,442
Owner-occupied
87.6%
+3.3 ptssince 2000
from 84.3% in 2000
12.4% rent
Vacancy rate
6.8%
−3.5 ptssince 2009
from 10.3% in 2009
US average: 10.0%
Owner cost-burdened
23.3%
−9.7 ptssince 2009
from 33.0% in 2009
US average: 22.9%
Renter cost-burdened
0.0%
−73.3 ptssince 2009
from 73.3% in 2009
US average: 47.4%
Afford Score
2.8
+18%since 2000
from 2.4 in 2000
1990 – 2024
Gentrification Score
36
RELATED:See current rent listings in Union on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic95.5%(550)
Black0%(0)
Hispanic / Latino4%(23)
Asian0%(0)
Other0%
Diversity Score9.6%(55)
2024
White, non-Hispanic90.5%(565)
Black0.8%(5)
Hispanic / Latino5.4%(34)
Asian2.1%(13)
Other1.1%(7)
Diversity Score22.1%(138)
Diversity Score
22
+129%since 2000
from 10 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
15.6%
+1.9 ptssince 2000
from 13.7% in 2000
US average: 35.6%
High school or higher
93.4%
+9.2 ptssince 2000
from 84.1% in 2000
US average: 89.6%
Graduate degree
5.7%
+1.4 ptssince 2000
from 4.3% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
30.3 min
+66%since 2000
from 18.3 min in 2000
US average: 26.5
Drive alone to work
83.5%
−10.4 ptssince 2009
from 93.9% in 2009
US average: 68.9%
Carpooled to work
7.6%
+3.8 ptssince 2009
from 3.7% in 2009
US average: 8.5%
Public transit
2.7%
+2.7 ptssince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
4.9%
+4.1 ptssince 2009
from 0.8% in 2009
US average: 15.0%
Walked to work
0.0%
−0.5 ptssince 2009
from 0.5% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
2.7%
+1.3 ptssince 2009
from 1.4% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.7%
−11.9 ptssince 2011
from 16.6% in 2011
US average: 5.2%
Labor force participation
74.8%
−5.9 ptssince 2011
from 80.6% in 2011
US average: 63.5%
Self-employed
9.6%
−1.4 ptssince 2009
from 11.0% in 2009
US average: 13.1%
Management & professional
34.0%
−33.3 ptssince 2009
from 67.3% in 2009
US average: 42.5%
Section 08

People & community

Male
56.1%
+8.6 ptssince 2009
from 47.5% in 2009
Female
43.9%
−8.6 ptssince 2009
from 52.5% in 2009
Foreign born
5.6%
+5.6 ptssince 2009
from 0.0% in 2009
US average: 14.1%
Veterans
7.0%
−39.2 ptssince 2009
from 46.3% in 2009
US average: 6.2%
With a disability
12.8%
+3.6 ptssince 2012
from 9.2% in 2012
US average: 13.3%
Uninsured
3.6%
−85.4 ptssince 2013
from 89.0% in 2013
US average: 8.4%
Broadband at home
90.7%
+9.4 ptssince 2017
from 81.3% in 2017
US average: 91.0%
English only at home
94.4%
−4.5 ptssince 2016
from 98.9% in 2016
US average: 77.7%
Spanish at home
3.0%
+1.8 ptssince 2016
from 1.1% in 2016
US average: 13.6%
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Head to head

Compare Union to nearby cities

UNION VS
Huntley
Income$88,536−1%
Home value$334,300+33%
Population29,132+4159%
SEE FULL COMPARISON →
UNION VS
Woodstock
Income$82,758−8%
Home value$245,700−3%
Population25,740+3663%
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UNION VS
Hampshire
Income$94,773+5%
Home value$329,800+31%
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UNION VS
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Income$108,418+21%
Home value$311,400+23%
Population42,288+6082%
SEE FULL COMPARISON →
Frequently asked

How many people live in Union, Illinois?

Union, Illinois has about 624 residents according to the 2024 American Community Survey.

What is the median household income in Union, Illinois?

The typical household in Union, Illinois earns about $89,844 a year. Half of households make more than that, and half make less.

Is Union, Illinois expensive?

In Union, Illinois, the median home is worth about $252,200, and the typical rent is about $1,692 a month.

How educated are people in Union, Illinois?

About 15.6% of adults age 25 and over in Union, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Union, Illinois?

About 7.5% of people in Union, Illinois live below the federal poverty line.

Has Union, Illinois grown since 1990?

Yes, Union, Illinois has grown since 1990. The population has added about 76 residents, a change of about 14 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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