Dupo village, Illinois
Official LSAD Designation: Dupo village • Census GEOID: 1721254
• Monroe County / St. Clair County
Demographics & Population Profile
Population and demographics for Dupo village.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 3,766 | — | 2025 | Census |
| Median Age | 42.9 yrs | ±9.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 1,598 | ±159 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).