Collinsville, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Collinsville, Illinois had a total population of 24,031, the 94th largest city in Illinois, with a median household income of $67,612, which is 19% lower than the state average. The poverty rate is 12.0%.
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 2.4x.
Collinsville Quick Facts
How Collinsville 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 | 24,126 | 24,031 | -0.4% |
| Median household income | $65,170 | $67,612 | +3.7% |
| Median home value | $157,700 | $163,600 | +3.7% |
How Collinsville 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
Moderate diversity with one or two groups making up the majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Collinsville Rankings in Illinois
Explore Illinois Rankings
Other Cities in Madison County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Granite City | 26,549 | $59,205 | 14.8% | $104,300 |
| Edwardsville | 26,474 | $86,721 | 11.6% | $299,800 |
| Alton | 25,279 | $54,568 | 21.0% | $103,700 |
| Godfrey | 17,712 | $94,543 | 6.4% | $192,200 |
| Glen Carbon | 13,977 | $97,168 | 4.9% | $282,000 |
| Troy | 11,647 | $112,434 | 2.0% | $268,000 |
| Wood River | 10,279 | $62,703 | 13.9% | $108,100 |
| Highland | 10,262 | $82,551 | 6.0% | $202,900 |
| Bethalto | 9,239 | $64,775 | 12.3% | $168,900 |
| Maryville | 8,316 | $100,670 | 2.7% | $261,800 |
Cities Similar to Collinsville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Melrose Park | 24,549 | $66,189 | $275,800 | 15.0% | 12.3% |
| Maywood | 23,201 | $68,815 | $229,800 | 19.2% | 15.5% |
| Belvidere | 24,752 | $64,528 | $158,900 | 12.8% | 14.6% |
| Zion | 24,600 | $63,104 | $183,800 | 15.1% | 16.0% |
| Loves Park | 23,502 | $61,868 | $160,400 | 25.7% | 14.4% |
Population Overview
Collinsville is a small city located in Illinois, within Madison County. The total population is 24,031. It ranks as the 94th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Collinsville is 38.5 years. This is 1% lower than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Collinsville is $67,612. This is 19% lower than the state median of $83,390. It is also 16% lower than the national median of $80,734. The poverty rate stands at 12.0%. This is 2% higher than the state poverty rate of 11.8%. The unemployment rate is 4.7%. This is 19% lower than the state rate of 5.8%. The median home value is $163,600. Housing costs are 38% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.4x, Collinsville is one of the most affordable housing markets in the area. 66.0% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Collinsville is White (non-Hispanic), making up 70.6% of the population. Black or African American residents account for 16.1%. The Hispanic or Latino population (6.7%) is well below the state average of 18.8%. The Asian population (1.2%) is well below the state average of 5.9%.
Education
31.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 18% 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 93.8%.
Data Sources & Methodology
All demographic data for Collinsville, 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 Collinsville, Illinois?
Collinsville, Illinois has a population of 24,031 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Collinsville, IL?
The median household income in Collinsville is $67,612, which is 16% lower than the national median of $80,734.
What is the poverty rate in Collinsville, IL?
The poverty rate in Collinsville is 12.0%. This means approximately 2,860 residents live below the federal poverty line.
What is the racial makeup of Collinsville, Illinois?
Collinsville's population is 70.6% White, 16.1% Black, 6.7% Hispanic/Latino, and 1.2% Asian.
What is the median home value in Collinsville, IL?
The median home value in Collinsville is $163,600. The home-value-to-income ratio is 2.4x.
How educated is Collinsville, Illinois?
31.0% of adults (25+) in Collinsville hold a bachelor's degree or higher, and 11.4% hold a graduate or professional degree.