| District Name | Onalaska School District |
| State | Washington |
| County | Lewis County |
| Statistical Area | Centralia, WA |
| Cities/Towns | Onalaska |
| Total Students (2021) | 832 |
| District Growth Rate (2017-21) | 5.2% |
| Majority Race/Ethnicty | White (82.6%) |
| Free/Reduced Lunch Program | 55.53% |