Onalaska zipcode
| City | Onalaska |
| ZIP Code | 98570 |
| Type | Standard |
| State Code | WA |
| State | Washington |
ZIP code of Onalaska is 98570. This place is located in Washington state in US. To send any postal service to Onalaska, you must use 98570 zipcode.
You should avoid following 2 city names of Washington to be used with the ZIP code 98570.
- Alpha, WA
- Lacamas, WA