City in Madison County, Illinois · 15.4 sq mi · 1,527 people per sq mi
About 24,000 people live in Collinsville. The typical household earns $67,612, and the median resident is 38.5 years old.
2026 projection
From 24,363 in 2020
Poverty rate 11.99%
Men 37.1 · Women 41.4
1880–2026
23,578
2026 projection
3.2% 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.
1880–2026
23,578
2026 projection
3.2% 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 | 23,578 | -139 | 0.59% |
|---|---|---|---|
| 2025 | 23,717 | -93 | 0.39% |
| 2024 | 23,810 | -78 | 0.33% |
| 2023 | 23,888 | -124 | 0.52% |
| 2022 | 24,012 | -190 | 0.79% |
| 2021 | 24,202 | -161 | 0.66% |
| 2020 | 24,363 | -21 | 0.09% |
| 2019 | 24,384 | -166 | 0.68% |
| 2018 | 24,550 | -181 | 0.73% |
| 2017 | 24,731 | +49 | 0.20% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 240 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 8 residents
44% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 44% | 46% | 42% |
| Never married | 36% | 39% | 32% |
| Divorced | 13% | 12% | 14% |
| Widowed | 6% | 2% | 10% |
| Separated | 2% | <1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau