Johnson 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
D
F

Population

Metric Johnson County Illinois Avg U.S. Average
Population 12,794 12,497,595 334,821,731
Population density (per sq mi) 36.7 215.8 85.8
Population growth (%/yr) 0.52% -0.18% 0.57%
Median age 41.2 37.3 37.1
Households 4,133 5,000,691 128,459,983

Population Over Time

Year Johnson County

Race & Ethnicity

Group Share

Economy

Johnson County has a the economy index of D, which means it is barely prosperous.

Metric Johnson County Illinois Avg U.S. Average
Median household income $64,254 $82,179 $78,145
Income growth (%/yr) 5.57% 4.78% 5.07%
Unemployment rate 2.4% 5.8% 5.2%

Detailed wealth and income breakdown →

Housing

Metric Johnson County Illinois Avg U.S. Average
Median home price $42,321 $162,405 $242,182
Median rent $633 $1,226 $1,342
Homeownership rate 84.7% 66.8% 65.1%

Full housing market analysis →

Mobility & Commuting

The most common departure window is 08:00 AM – 08:29 AM , followed by 07:30 AM – 07:59 AM .

Metric Johnson County Illinois Avg U.S. Average
Average commute time (min) 30.1 23.8 22.5
Work from home 5.5% 14.0% 13.4%

Commute and transport details →

Education & Households

Johnson County has a education index of F, which means it scores poorly in education.

Metric Johnson County Illinois Avg U.S. Average
Bachelor's degree or higher 15.4% 34.1% 31.6%
Average household size 2.78 2.48 2.54

Health

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

Metric Johnson County Illinois Avg U.S. Average
Life expectancy (years) 77.4 77.9 78.3
Self-rated poor health 22.5% 15.6% 16.3%
Smokers 26.2% 19.2% 19.0%