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Union County, IL
6 cities and towns and 8 ZIP codes in Union County, Illinois.
Population
16,997
Land area
413sq mi
People per sq mi
41
ZIP codes
8
Cities and towns in Union County
Union County at a glance
- Union County is 82% less dense than Illinois as a whole.
- The median household income is $55,728, 33% below the Illinois median of $83,390.
- A typical owner-occupied home is valued at $131,700 (50% below Illinois) and median rent is $648 a month.
- Its largest cities are Anna (4,196), Jonesboro (1,870) and Cobden (1,170).
Local data for Union County, IL
Counts from official public data
Housing and community stats
Union County, IL, American Community Survey 2020-2024
Median household income
$55,728
Poverty rate
20.2%
Median home value
$131,700
Prices +13.1% in a year
Median rent
$648/mo
Homeownership
77.4%
Bachelor's or higher
20.9%
Median age
44.3
Average commute
24.4 min
Largest reported origins and ancestries: German Americans (3,453), Irish Americans (1,482), Mexican Americans (639).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.7%
Aug 2026, -0.8 pts in a year
Average annual pay
$48,695
5,238 jobs, 2025
Income per person
$53,748
BEA, 2024
Federal spending
$114M
FY 2026, $6,611 per person
PPP loans
$23.03M
632 loans, 3,488 jobs reported
Campaign donations
$102K
Itemized, 2026 cycle
How people get to work
Union County, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone81.4%
- Carpooled7.2%
- Public transit2.0%
- Walked1.6%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other1.6%
- Worked from home6.2%
Average one-way commute: 24.4 minutes for people who do not work from home.
Environment and hazard risk
Union County, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: earthquake
Storm events since 1996
721
Most often dense fog
Flood insurance policies
46
0.9% of homes, county
July high / Jan low
90° / 25°F
51.1 inches of rain a year
Hazards, floods and storm historyCheck a flood zone5 historic places
Health statistics
Share of adults in Union County, IL, CDC PLACES estimates
Obesity
39.8%
U.S. 33.3% +6.5 pts
Diabetes
14.1%
U.S. 12.1% +2.0 pts
Smoking
17.1%
U.S. 12.8% +4.3 pts
Uninsured (18-64)
9.3%
U.S. 11.1% -1.8 pts
Cities, towns and ZIP codes in Union County
Population shown
Frequently asked questions
- What is the largest city in Union County, IL?
- Anna is the largest city or town in Union County, with about 4,196 residents.
- How many ZIP codes are in Union County?
- Union County includes 8 ZIP Code Tabulation Areas, including 62905, 62906, 62920, 62926, 62952.
- What is the population of Union County, IL?
- About 16,997 people live in Union County, based on American Community Survey 5-year estimates.
- What counties border Union County?
- Union County borders Cape Girardeau County, MO, Williamson County, Jackson County, Perry County, MO, Johnson County, Pulaski County, Alexander County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023