Belleville, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Belleville, IL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
B
Health Around average
-
C
Income Below average
-
D
Education Well below average
Source: Map AI Methodology
Population
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 38,882 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 1654.5 | 219.1 | 86.4 |
| Population growth (%/yr) | -0.22% | -0.16% | 0.59% |
| Median age | 38.6 | 37.4 | 37.3 |
| Households | 16,679 | 5,035,584 | 130,235,071 |
Population in Belleville grew by 0.3% from 2009 to 2024, reaching 38,882 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Belleville is Gen Z, aged 13–28, at 22.1% of residents. That is 0.8 points above Illinois as a whole.
- Gen Z 13–28 8,584 22.1% +0.8 pts
- Millennials 29–44 8,429 21.7% -0.2 pts
- Gen X 45–60 8,024 20.6% +0.2 pts
- Boomers 61–79 6,205 16.0% -1.0 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Illinois, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 52.4% of the people living in Belleville and men 47.6%.
- Women 52.4% Illinois 50.6%
- Men 47.6% Illinois 49.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Belleville
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Belleville has a the economy index of C, which means it is somewhat prosperous.
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $62,181 | $84,042 | $80,455 |
| Income growth (%/yr) | 5.02% | 4.46% | 4.80% |
| Unemployment rate | 5.4% | 5.8% | 5.2% |
The median household income in Belleville is about 26% lower than in Illinois.
Housing
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $136,026 | $149,936 | $248,835 |
| Median rent | $981 | $1,274 | $1,407 |
| Homeownership rate | 63.0% | 67.1% | 65.2% |
The median home price in Belleville is about 11.6 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $981 per month for that long.
Commute Time & Mobility
Commuters in Belleville spend about 41 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 170 hours, about 7.1 full days, spent commuting.
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 20.4 | 23.6 | 22.4 |
| Round-trip commute (min) | 40.8 | 47.3 | 44.8 |
| Yearly time spent (hours) | 170 | 197 | 187 |
| Estimated yearly cost | $5,275 | $6,104 | $5,790 |
| Work from home | 11.4% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 6,387 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 2,154 | 1,547 | 1,355 |
The average commute time in Belleville is 20 minutes, shorter than the 24 minutes in Illinois.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Belleville has a education index of D, which means it is barely educated.
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 23.6% | 34.1% | 31.6% |
| Average household size | 2.23 | 2.46 | 2.53 |
Health
Belleville has a health index of B, which means it is quite healthy.
| Metric | Belleville | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 76.5 | 77.9 | 78.3 |
| Self-rated poor health | 14.8% | 15.6% | 16.3% |
| Smokers | 17.6% | 19.2% | 19.0% |
Frequently Asked Questions
Common questions about Belleville, Illinois.
How big is Belleville, Illinois by population?
About 38,882 people live in Belleville, Illinois, in 16,679 households of 2.2 people on average. The median age is 38.6, close to the U.S. median of 37.3.
Is Belleville, Illinois urban or rural?
Averaged over its land area, Belleville, Illinois has 1,654 people per square mile, a density typical of urban and suburban areas. That is about 19 times the U.S. average of 86.
Is Belleville, Illinois an affordable place to live?
The median home costs 2.2 times the median household income ($136,026 against $62,181), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $981 a month takes about 19% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How educated are people in Belleville, Illinois?
23.6% of adults in Belleville, Illinois hold a bachelor's degree or higher (about 1 in 4), well below the U.S. share of 31.6%.
Analyze any area in the US
Get local demographics for any address, aggregated by drive time or radius, on the interactive map.
Explore the map →