Onalaska city, Wisconsin
Official LSAD Designation: Onalaska city • Census GEOID: 5559925
• La Crosse County
Onalaska city is an incorporated city in La Crosse County, Wisconsin. According to official records from the Census (2025), Onalaska city had an estimated population of 20,297 residents. Official Census Bureau geographic records classify this community under LSAD designation Onalaska city (GEOID 5559925).
Local Government Administration U.S. Census Bureau GMAF
City Of Onalaska
Municipal
Official Title:
City Clerk
Address:
415 MAIN ST, ONALASKA WI 54650-2953
County Of La Crosse
County
Official Title:
Finance Director
Address:
400 4TH ST N, LA CROSSE WI 54601-3227
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 20,297 | 2025 |
| Median Household Income | $85,867 | 2020-2024 |
| Median Home Value | $288,900 | 2020-2024 |
| Land Area | 10.65 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).