City in St. Clair County, Illinois · 15.7 sq mi · 1,061 people per sq mi
About 17,000 people live in Cahokia Heights. The typical household earns $33,792, and the median resident is 30.3 years old.
2026 projection
From 17,820 in 2020
Poverty rate 34.15%
Men 25.6 · Women 32.1
2010–2026
16,678
2026 projection
6.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
16,678
2026 projection
6.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 16,678 | -196 | 1.16% |
|---|---|---|---|
| 2025 | 16,874 | -165 | 0.97% |
| 2024 | 17,039 | -130 | 0.76% |
| 2023 | 17,169 | -187 | 1.08% |
| 2022 | 17,356 | -252 | 1.43% |
| 2021 | 17,608 | -212 | 1.19% |
| 2020 | 17,820 | +17,820 | — |
| 2019 | 0 | 0 | — |
| 2018 | 0 | 0 | — |
| 2017 | 0 | 0 | — |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 171 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 3 residents
23% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 23% | 26% | 21% |
| Never married | 51% | 50% | 51% |
| Divorced | 15% | 14% | 15% |
| Widowed | 6% | 4% | 7% |
| Separated | 5% | 5% | 6% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau