Vienna city, Illinois
Official LSAD Designation: Vienna city • Census GEOID: 1777863
• Johnson County
Demographics & Population Profile
Population and demographics for Vienna city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 1,352 | — | 2025 | Census |
| Median Age | 30.1 yrs | ±7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 603 | ±119 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).