Checked
Union, IL
Village in McHenry County, Illinois.
Population
624
Land area
0.8sq mi
People per sq mi
746
ZIP codes
0
Union and its ZIP codes
Union at a glance
- Union is about 3.3 times as dense as Illinois as a whole.
- The median household income is $89,844, 8% above the Illinois median of $83,390.
- A typical owner-occupied home is valued at $252,200 (4% below Illinois) and median rent is $1,692 a month.
Local data for Union, IL
Counts from official public data
Housing and community stats
Union, IL, American Community Survey 2020-2024
Median household income
$89,844
Poverty rate
7.5%
Median home value
$252,200
Median rent
$1,692/mo
Homeownership
87.6%
Bachelor's or higher
15.6%
Median age
39.0
Average commute
30.3 min
Largest reported origins and ancestries: German Americans (184), Irish Americans (58), Mexican Americans (31).
Economy and federal money
Jobs, pay, income and spending are for McHenry County. PPP loans are for Union.
Unemployment rate
4.7%
Aug 2026, +1.0 pts in a year
Average annual pay
$57,103
98,058 jobs, 2025
Income per person
$72,162
BEA, 2024
Federal spending
$1.9B
FY 2026, $6,123 per person
How people get to work
Union, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone83.5%
- Carpooled7.6%
- Public transit2.7%
- Walked0.0%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other1.4%
- Worked from home4.9%
Average one-way commute: 30.3 minutes for people who do not work from home.
Environment and hazard risk
Union, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: cold wave
Storm events since 1996
783
Countywide, mostly thunderstorm wind
Flood insurance policies
764
0.7% of homes, county
July high / Jan low
84° / 13°F
37.6 inches of rain a year
Health statistics
Share of adults in Union, IL, CDC PLACES estimates
Obesity
30.6%
U.S. 33.3% -2.7 pts
Diabetes
9.0%
U.S. 12.1% -3.1 pts
Smoking
10.4%
U.S. 12.8% -2.4 pts
Uninsured (18-64)
5.9%
U.S. 11.1% -5.2 pts
Cities near Union
| Name | Distance | Land area (sq mi) |
|---|---|---|
| CoralCensus-designated place | 1.2 mi | 0 |
| FranklinvilleCensus-designated place | 3.6 mi | 0.2 |
| HarmonyCensus-designated place | 4.7 mi | 0.5 |
| RileyCensus-designated place | 4.9 mi | 0.2 |
| MarengoCity | 5.3 mi | 8.9 |
| LakewoodVillage | 7.5 mi | 4.6 |
| WoodstockCity | 7.8 mi | 13.2 |
| HampshireVillage | 7.8 mi | 10 |
| HuntleyVillage | 7.9 mi | 14.7 |
| Garden PrairieCensus-designated place | 9 mi | 0.6 |
| HartlandCensus-designated place | 9.4 mi | 0.3 |
| RidgefieldCensus-designated place | 9.9 mi | 0.5 |
| Bull ValleyVillage | 11 mi | 9.8 |
| Pingree GroveVillage | 11 mi | 4 |
| Crystal LakeCity | 12 mi | 19 |
| GenoaCity | 12 mi | 2.6 |
Frequently asked questions
- What county is Union, IL in?
- Union is in McHenry County, Illinois.
- What is the population of Union, IL?
- About 624 people live in Union, based on American Community Survey 5-year estimates.
- What cities are near Union?
- Nearby places include Coral (1.2 mi), Franklinville (3.6 mi), Harmony (4.7 mi), Riley (4.9 mi), Marengo (5.3 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023