Belleville, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Belleville, Illinois had a total population of 41,370, the 37th largest city in Illinois, with a median household income of $63,535, which is 24% lower than the state average. The poverty rate is 14.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.2x.
Belleville Quick Facts
How Belleville Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 41,722 | 41,370 | -0.8% |
| Median household income | $60,529 | $63,535 | +5.0% |
| Median home value | $131,000 | $141,300 | +7.9% |
How Belleville Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Belleville Rankings in Illinois
Explore Illinois Rankings
Other Cities in St. Clair County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| O'Fallon | 32,262 | $105,982 | 6.2% | $295,700 |
| East St. Louis | 17,999 | $35,700 | 32.8% | $52,600 |
| Fairview Heights | 16,745 | $80,930 | 8.8% | $177,700 |
| Swansea | 14,710 | $91,587 | 8.7% | $223,600 |
| Shiloh | 14,572 | $99,573 | 6.8% | $274,000 |
| Columbia | 11,127 | $107,606 | 5.4% | $293,000 |
| Mascoutah | 8,816 | $97,375 | 9.8% | $224,900 |
| Freeburg | 4,592 | $92,065 | 6.7% | $241,200 |
| Lebanon | 4,474 | $88,750 | 14.8% | $170,700 |
| Caseyville | 4,130 | $60,669 | 14.3% | $96,800 |
Cities Similar to Belleville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Moline | 42,197 | $67,701 | $146,300 | 28.8% | 15.5% |
| Quincy | 39,109 | $56,480 | $153,200 | 27.8% | 16.7% |
| Rock Island | 36,151 | $59,041 | $125,900 | 24.5% | 21.0% |
| DeKalb | 40,443 | $46,481 | $204,700 | 33.7% | 24.9% |
| Urbana | 39,341 | $45,346 | $184,900 | 56.8% | 28.0% |
Population Overview
Belleville is a mid-sized community located in Illinois, within St. Clair County. The total population is 41,370. It ranks as the 37th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Belleville is 39.1 years. This is about the same as the state median of 39.0 years.
Economy, Income & Housing
The median household income in Belleville is $63,535. This is 24% lower than the state median of $83,390. It is also 21% lower than the national median of $80,734. The poverty rate stands at 14.6%. This is 24% higher than the state poverty rate of 11.8%. The unemployment rate is 6.1%. This is 4% higher than the state rate of 5.8%. The median home value is $141,300. Housing costs are 46% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.2x, Belleville is one of the most affordable housing markets in the area. 60.1% of occupied housing units are owner-occupied. This homeownership rate is 10% lower than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Belleville is White (non-Hispanic), making up 56.7% of the population. Black or African American residents account for 32.5%. The Black or African American population is significantly higher than the state average (32.5% vs 13.3%). The Hispanic or Latino population (2.9%) is well below the state average of 18.8%. The Asian population (1.0%) is well below the state average of 5.9%.
Education
28.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 26% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.9%.
Data Sources & Methodology
All demographic data for Belleville, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Belleville, Illinois?
Belleville, Illinois has a population of 41,370 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Belleville, IL?
The median household income in Belleville is $63,535, which is 21% lower than the national median of $80,734.
What is the poverty rate in Belleville, IL?
The poverty rate in Belleville is 14.6%. This means approximately 5,797 residents live below the federal poverty line.
What is the racial makeup of Belleville, Illinois?
Belleville's population is 56.7% White, 32.5% Black, 2.9% Hispanic/Latino, and 1.0% Asian.
What is the median home value in Belleville, IL?
The median home value in Belleville is $141,300. The home-value-to-income ratio is 2.2x.
How educated is Belleville, Illinois?
28.0% of adults (25+) in Belleville hold a bachelor's degree or higher, and 12.3% hold a graduate or professional degree.