| Official Zip Code Name | Onalaska |
| Zip Code State | Washington |
| Primary County: | Lewis |
| Area Code | 360/564 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 8 |
| Elevation Range | 546 ft. |
| Area | 126.006 Sqm. |
| Coordinates(Y,X) | 46.579324, -122.695880 |