| Place Name | Onalaska |
| Place Type | City |
| ZIP Code(s) | 54650 |
| County | La Crosse County |
| Area Code(s) | 608 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 17,740 |
| Population Growth Rate (2010-19) | 6.02% |
| Majority Ethnicity | White 88.58% |
| Metro/Micro Stats Area | La Crosse-Onalaska, WI-MN |
| US Congressional District(s) | Wisconsin 3rd |
| State Assembly Districts | 94 |
| State Senate Districts | 32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.58% |
| African American | 2.52% |
| Hispanic | 0.1% |
| Asian | 6.79% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 1.89% |