Marion County, IL Demographics & Local Data

Analyze population trends, housing costs, and the local economy by exploring Map AI.

Area Snapshot

Key statistics on population, economy, housing, and commuting compared to state and national averages. Explore interactive maps for deeper analysis.

C
C
D

Population

Metric Marion County Illinois Avg U.S. Average
Population 36,671 12,497,595 334,821,731
Population density (per sq mi) 63.7 215.8 85.8
Population growth (%/yr) -0.45% -0.18% 0.57%
Median age 42.2 37.3 37.1
Households 15,465 5,000,691 128,459,983

Population Over Time

Year Marion County

Race & Ethnicity

Group Share

Economy

Marion County has a the economy index of C, which means it is somewhat prosperous.

Metric Marion County Illinois Avg U.S. Average
Median household income $61,063 $82,179 $78,145
Income growth (%/yr) 4.95% 4.78% 5.07%
Unemployment rate 6.4% 5.8% 5.2%

Detailed wealth and income breakdown →

Housing

Metric Marion County Illinois Avg U.S. Average
Median home price $29,113 $162,405 $242,182
Median rent $770 $1,226 $1,342
Homeownership rate 74.5% 66.8% 65.1%

Full housing market analysis →

Mobility & Commuting

The most common departure window is 07:30 AM – 07:59 AM , followed by 12:00 PM – 03:59 PM .

Metric Marion County Illinois Avg U.S. Average
Average commute time (min) 15.9 23.8 22.5
Work from home 5.1% 14.0% 13.4%

Commute and transport details →

Education & Households

Marion County has a education index of D, which means it is barely educated.

Metric Marion County Illinois Avg U.S. Average
Bachelor's degree or higher 15.4% 34.1% 31.6%
Average household size 2.35 2.48 2.54

Health

Marion County has a health index of C, which means it is somewhat healthy.

Metric Marion County Illinois Avg U.S. Average
Life expectancy (years) 75.6 77.9 78.3
Self-rated poor health 17.8% 15.6% 16.3%
Smokers 21.7% 19.2% 19.0%