Oconomowoc city, Wisconsin
Official LSAD Designation: Oconomowoc city • Census GEOID: 5559250
• Waukesha County
Demographics & Population Profile
Population and demographics for Oconomowoc city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 20,119 | — | 2025 | Census |
| Median Age | 42.6 yrs | ±2.6 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 7,833 | ±252 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).