Collinsville, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Collinsville, Illinois is 24,126 as of the 2023 American Community Survey, making it the 95th-largest city in Illinois. The median household income is $65,170, the median home value is $157,700, and the median age is 39.7.
The population has declined 7.3% since 2010 (25,634 → 23,766).
24,126
Population
1566
People / sq mi
$65,170
Median Income
$157,700
Median Home Value
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Collinsville covers 15.4 sq mi of land at 1566 people per square mile.
About Collinsville, IL
In Collinsville, home values do the distinguishing — a median of $157,700. With 24,126 residents, Collinsville is a city in Illinois.
The typical household here earns about $65,170, below the US median of $78,538. About 9.4% of residents live below the federal poverty level, below the national 12.4%. Housing is relatively affordable, with a median home value of $157,700, with typical rent around $979.
Roughly 29.9% of adults have a bachelor’s, below the national 35.0%. Around 10.3% of workers work from home, below the national 14.0%, and the average commute runs about 25 minutes each way.
Collinsville city Population History (2010-2024)
The city of Collinsville city had a population of 25,634 in 2010 and 23,766 in 2024, a -7.3% growth over 14 years. The peak was 25,634 in 2010. Average annual growth rate: -0.54%.
23,766
Population (2024)
25,634
Population (2010)
25,634
Peak (2010)
-0.54%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 25,634 |
| 2011 | 25,455 |
| 2012 | 25,328 |
| 2013 | 25,165 |
| 2014 | 24,986 |
| 2015 | 24,841 |
| 2016 | 24,732 |
| 2017 | 24,770 |
| 2018 | 24,573 |
| 2019 | 24,395 |
| 2020 | 24,368 |
| 2021 | 24,206 |
| 2022 | 24,016 |
| 2023 | 23,880 |
| 2024 | 23,766 |
Race & Ethnicity
| White | 73.9% |
| Black or African American | 16.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Economy & Income
$65,170
Median Household Income
$40,599
Per Capita Income
9.4%
Poverty Rate
3.0%
Unemployment Rate
Housing
$157,700
Median Home Value
$979
Median Rent
64.8%
Owner-Occupied
Education
94.7%
High School+
29.9%
Bachelor's+
Commute
0.4%
Drive Alone
77.9%
Public Transit
10.3%
Work From Home
24.7 min
Avg Commute
Community Profile
31.3%
Foreign Born
92.9%
Non-English at Home
7.5%
Veterans
15.1%
With Disability
94.0%
Health Insurance
95.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.1% |
| Education, Health Care & Social Services | 11.9% |
| Finance, Insurance & Real Estate | 11.2% |
| Manufacturing | 9.8% |
| Construction | 8.6% |
| Retail Trade | 8.3% |
| Arts, Entertainment & Food Services | 5.2% |
| Information | 5.2% |
| Public Administration | 3.1% |
| Transportation & Warehousing | 1.2% |
| Agriculture & Mining | 0.2% |
Largest cities in Illinois
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City rankings
Frequently Asked Questions
Collinsville, Illinois has a population of 24,126 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 95th-largest city in Illinois.
The median household income in Collinsville, Illinois is $65,170, with 9.4% of residents living below the federal poverty level.
The median home value in Collinsville, Illinois is $157,700, with median monthly rent at $979 and a homeownership rate of 64.8%.
The median age in Collinsville, Illinois is 39.7 years. The population is 49.4% male and 50.6% female.
The population has declined 7.3% since 2010 (25,634 → 23,766).
Where to stay in Collinsville
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.