Onalaska city, Wisconsin
Official LSAD Designation: Onalaska city • Census GEOID: 5559925
• La Crosse County
Demographics & Population Profile
Population and demographics for Onalaska city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 20,297 | — | 2025 | Census |
| Median Age | 40.7 yrs | ±2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 9,002 | ±377 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).