Mount Olive city, Illinois
Official LSAD Designation: Mount Olive city • Census GEOID: 1751024
• Macoupin County
Demographics & Population Profile
Population and demographics for Mount Olive city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 1,936 | — | 2025 | Census |
| Median Age | 50.4 yrs | ±5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 844 | ±104 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).