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
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Cahokia Heights covers 15.8 sq mi of land at 1088 people per square mile.
About Cahokia Heights, IL
Housing cost is the defining feature of Cahokia Heights: the median home is valued at $56,900. Cahokia Heights is a city in Illinois with a population of 17,173.
Money is tight relative to the rest of US cities: the median household earns just $37,975, below the US median of $78,538. The poverty rate, 28.2%, is among the steepest of comparable US cities and above the national 12.4%. Home prices sit near the bottom of the range at $56,900, with typical rent around $959.
College credentials are comparatively rare here: just 11.9%, below the national 35.0%. Most workers commute: only 7.1% work from home, below the national 14.0%, and the average commute runs about 28 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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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).
Where to stay in Cahokia Heights
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.