Cahokia Heights, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Cahokia Heights, Illinois had a total population of 17,106, the 148th largest city in Illinois, with a median household income of $33,792, which is 59% lower than the state average. The poverty rate is 34.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 59% below the state average, indicating significant economic challenges.
- More than 1 in 4 residents live below the poverty line (34.2%), well above the national average of 12.4%.
- Housing is very affordable with a home-value-to-income ratio of just 1.7x.
- Unemployment rate of 10.0% is notably above the national average.
Cahokia Heights Quick Facts
How Cahokia Heights 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 | 17,173 | 17,106 | -0.4% |
| Median household income | $37,975 | $33,792 | -11.0% |
| Median home value | $56,900 | $56,000 | -1.6% |
How Cahokia Heights 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+)
Cahokia Heights Rankings in Illinois
Explore Illinois Rankings
Cities Similar to Cahokia Heights
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| East St. Louis | 17,999 | $35,700 | $52,600 | 15.9% | 32.8% |
| Charleston | 17,062 | $49,300 | $137,400 | 33.3% | 26.3% |
| Mattoon | 16,586 | $51,597 | $97,700 | 19.5% | 21.3% |
| Macomb | 14,894 | $44,411 | $103,300 | 35.4% | 25.1% |
| Marion | 16,836 | $56,912 | $158,300 | 28.5% | 13.3% |
Population Overview
Cahokia Heights is a small city located in Illinois. The total population is 17,106. It ranks as the 148th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Cahokia Heights is 30.3 years. This is 22% lower than the state median of 39.0 years. With 35.9% of the population under 18, Cahokia Heights has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Cahokia Heights is $33,792. This is 59% lower than the state median of $83,390. It is also 58% lower than the national median of $80,734. The poverty rate stands at 34.2%. This is 189% higher than the state poverty rate of 11.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 10.0%. This is 71% higher than the state rate of 5.8%. The median home value is $56,000. Housing costs are 79% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.7x, Cahokia Heights is one of the most affordable housing markets in the area. 52.2% of occupied housing units are owner-occupied. This homeownership rate is 22% lower than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Cahokia Heights is Black or African American, making up 69.7% of the population. White (non-Hispanic) residents account for 20.0%. The White (non-Hispanic) population (20.0%) is well below the state average of 58.1%. The Black or African American population is significantly higher than the state average (69.7% vs 13.3%). The Hispanic or Latino population (2.1%) is well below the state average of 18.8%. The Asian population (0.5%) is well below the state average of 5.9%.
Education
13.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 64% 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 85.5%.
Data Sources & Methodology
All demographic data for Cahokia Heights, 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 Cahokia Heights, Illinois?
Cahokia Heights, Illinois has a population of 17,106 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cahokia Heights, IL?
The median household income in Cahokia Heights is $33,792, which is 58% lower than the national median of $80,734.
What is the poverty rate in Cahokia Heights, IL?
The poverty rate in Cahokia Heights is 34.2%. This means approximately 5,627 residents live below the federal poverty line.
What is the racial makeup of Cahokia Heights, Illinois?
Cahokia Heights's population is 20.0% White, 69.7% Black, 2.1% Hispanic/Latino, and 0.5% Asian.
What is the median home value in Cahokia Heights, IL?
The median home value in Cahokia Heights is $56,000. The home-value-to-income ratio is 1.7x.
How educated is Cahokia Heights, Illinois?
13.5% of adults (25+) in Cahokia Heights hold a bachelor's degree or higher, and 5.0% hold a graduate or professional degree.