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Marion, IL
City in Williamson County, Illinois.
Population
16,836
Land area
14.4sq mi
People per sq mi
1,169
ZIP codes
0
Marion and its ZIP codes
Marion at a glance
- Marion is about 5.1 times as dense as Illinois as a whole.
- By population, it ranks 151st among 1,445 cities and towns in Illinois.
- The median household income is $56,912, 32% below the Illinois median of $83,390.
- A typical owner-occupied home is valued at $158,300 (40% below Illinois) and median rent is $921 a month.
Local data for Marion, IL
Counts from official public data
- Hospitals2
- Emergency Rooms2
- Nursing Homes2
- Schools11
- Libraries1
- Banks26
- Post Offices2
- Parks6
- Grocery Stores9
- Restaurants109
- Affordable Housing1
- Home Health Agencies2
- Hospice Care1
- Dialysis Centers1
- Community Health Centers9
- Mental Health & Addiction Treatment4
- Private Schools1
- Toxic Release Facilities1
- Historic Places4
Housing and community stats
Marion, IL, American Community Survey 2020-2024
Median household income
$56,912
Poverty rate
13.3%
Median home value
$158,300
Median rent
$921/mo
Homeownership
63.3%
Bachelor's or higher
28.5%
Median age
42.2
Average commute
21.9 min
Largest reported origins and ancestries: German Americans (2,910), Irish Americans (2,143), Italian Americans (752).
Economy and federal money
Jobs, pay, income and spending are for Williamson County. PPP loans are for Marion.
Unemployment rate
3.6%
Aug 2026, -0.9 pts in a year
Average annual pay
$55,243
29,573 jobs, 2025
Income per person
$58,380
BEA, 2024
Federal spending
$629M
FY 2026, $9,373 per person
How people get to work
Marion, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone80.3%
- Carpooled7.3%
- Public transit0.2%
- Walked0.5%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other0.2%
- Worked from home11.3%
Average one-way commute: 21.9 minutes for people who do not work from home.
Environment and hazard risk
Marion, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: strong wind
Storm events since 1996
849
Countywide, mostly hail
Flood insurance policies
141
0.5% of homes, county
July high / Jan low
88° / 23°F
49.0 inches of rain a year
Hazards, floods and storm historyCheck a flood zone4 historic places
Health statistics
Share of adults in Marion, IL, CDC PLACES estimates
Obesity
40.1%
U.S. 33.3% +6.8 pts
Diabetes
12.8%
U.S. 12.1% +0.7 pts
Smoking
14.8%
U.S. 12.8% +2.0 pts
Uninsured (18-64)
7.9%
U.S. 11.1% -3.2 pts
Cities near Marion
| Name | Distance | Land area (sq mi) |
|---|---|---|
| SpillertownVillage | 2.7 mi | 0.3 |
| WhiteashCensus-designated place | 4 mi | 0.9 |
| EnergyVillage | 5.8 mi | 1.2 |
| PittsburgVillage | 6 mi | 2.1 |
| HerrinCity | 6.6 mi | 9.7 |
| Johnston CityCity | 6.6 mi | 2.1 |
| Crab OrchardCensus-designated place | 7 mi | 1.4 |
| CrainvilleVillage | 7.3 mi | 1.7 |
| CartervilleCity | 8.9 mi | 5.3 |
| Creal SpringsCity | 9.1 mi | 1 |
| ColpVillage | 9.7 mi | 0.1 |
| Freeman SpurVillage | 9.7 mi | 0.4 |
| CambriaVillage | 11 mi | 1.4 |
| GorevilleVillage | 11 mi | 2.7 |
| West FrankfortCity | 12 mi | 5 |
| BlairsvilleCensus-designated place | 12 mi | 1 |
Frequently asked questions
- What county is Marion, IL in?
- Marion is in Williamson County, Illinois.
- What is the population of Marion, IL?
- About 16,836 people live in Marion, based on American Community Survey 5-year estimates.
- What cities are near Marion?
- Nearby places include Spillertown (2.7 mi), Whiteash (4 mi), Energy (5.8 mi), Pittsburg (6 mi), Herrin (6.6 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023