Cahokia Heights, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Cahokia Heights, Illinois is 17,173 as of the 2023 American Community Survey, making it the 148th-largest city in Illinois. The median household income is $37,975, the median home value is $56,900, and the median age is 32.8.
The population has declined 4.5% since 2020 (17,849 → 17,052).
17,173
Population
1088
People / sq mi
$37,975
Median Income
$56,900
Median Home Value
Cahokia Heights covers 15.8 sq mi of land at 1088 people per square mile.
About Cahokia Heights, IL
Cahokia Heights is a city in Illinois with a population of 17,173. It ranks #148 among cities in Illinois by population. The median age is 32.8, younger than the national median. The population is 45.8% male and 54.2% female.
The median household income in Cahokia Heights is $37,975, below the US median of $74,580. 28.2% of residents live below the federal poverty level. Home values sit at a median of $56,900, with monthly rent averaging $959. The homeownership rate of 52.6% is lower than the national rate of 64.8%.
Educational attainment in Cahokia Heights reflects 11.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 28.2 minutes each way.
Cahokia Heights city Population History (2020-2024)
The city of Cahokia Heights city had a population of 17,849 in 2020 and 17,052 in 2024, a -4.5% growth over 4 years. The peak was 17,849 in 2020. Average annual growth rate: -1.14%.
17,052
Population (2024)
17,849
Population (2020)
17,849
Peak (2020)
-1.14%
Avg Annual Growth
| Year | Population |
|---|---|
| 2020 | 17,849 |
| 2021 | 17,631 |
| 2022 | 17,385 |
| 2023 | 17,196 |
| 2024 | 17,052 |
Race & Ethnicity
| White | 20.7% |
| Black or African American | 71.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.6% |
| Two or More Races | 0.0% |
Economy & Income
$37,975
Median Household Income
$19,692
Per Capita Income
28.2%
Poverty Rate
5.7%
Unemployment Rate
Housing
$56,900
Median Home Value
$959
Median Rent
52.6%
Owner-Occupied
Education
85.0%
High School+
11.9%
Bachelor's+
Commute
7.7%
Drive Alone
68.6%
Public Transit
7.1%
Work From Home
28.2 min
Avg Commute
Community Profile
29.6%
Foreign Born
96.7%
Non-English at Home
7.5%
Veterans
20.1%
With Disability
93.9%
Health Insurance
86.8%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 26.8% |
| Retail Trade | 16.6% |
| Education, Health Care & Social Services | 15.0% |
| Finance, Insurance & Real Estate | 9.2% |
| Manufacturing | 8.5% |
| Information | 3.7% |
| Construction | 2.3% |
| Arts, Entertainment & Food Services | 2.2% |
| Agriculture & Mining | 1.9% |
| Public Administration | 1.5% |
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Part of Illinois
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City rankings
Frequently Asked Questions
Cahokia Heights, Illinois has a population of 17,173 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 148th-largest city in Illinois.
The median household income in Cahokia Heights, Illinois is $37,975, with 28.2% of residents living below the federal poverty level.
The median home value in Cahokia Heights, Illinois is $56,900, with median monthly rent at $959 and a homeownership rate of 52.6%.
The median age in Cahokia Heights, Illinois is 32.8 years. The population is 45.8% male and 54.2% female.
The population has declined 4.5% since 2020 (17,849 → 17,052).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.