| Grades | Students | P/T Ratio | ZIP | |
|---|---|---|---|---|
| Edison Elementary School | KG - 06 | 350 | 16 | 98531 |
| Fords Prairie Elementary School | KG - 06 | 500 | 17 | 98531 |
| Jefferson Lincoln Elementary School | KG - 06 | 460 | 19 | 98531 |
| Napavine Elementary School | PK - 06 | 366 | 18 | 98565 |
| Oakview Elementary School | PK - 06 | 341 | 20 | 98531 |
| Onalaska Elementary/middle School | PK - 08 | 900 | 24 | 98570 |
| Rainier Primary School | KG - 05 | 477 | 30 | 98576 |
| Toledo Elementary School | KG - 05 | 360 | 17 | 98591 |
| Washington Elementary School | KG - 06 | 335 | 18 | 98531 |
| Grades | Students | P/T Ratio | ZIP | |
|---|---|---|---|---|
| Centralia Middle School | 07 - 08 | 550 | 18 | 98531 |
| Rainier Middle School | 06 - 08 | 225 | 14 | 98576 |
| Toledo Middle School | 06 - 08 | 175 | 18 | 98591 |
| Grades | Students | P/T Ratio | ZIP | |
|---|---|---|---|---|
| Centralia High School | 09 - 12 | 1,040 | 20 | 98531 |
| Cowlitz Prairie Academy | 07 - 12 | 52 | 0 | 98591 |
| Garrett Heyns High School | 08 - 12 | 4 | 0 | 98531 |
| Napavine Jr Senior High School | 07 - 12 | 400 | 16 | 98565 |
| Rainier Senior High School | 09 - 12 | 239 | 15 | 98576 |
| Toledo High School | 09 - 12 | 219 | 17 | 98591 |
| Grades | Students | P/T Ratio | ZIP | |
|---|---|---|---|---|
| Futurus High School | 11 - 12 | 52 | 0 | 98531 |
| Graduation Alliance Central Valley | 10 - 12 | 18 | 0 | 98570 |
| City | County | |
|---|---|---|
| Population | 631 | 82,475 |
| Population Density | 396 | 34 |
| Median Age | 43.7 | 42.6 |
| People per Household | 2.6 | 2.5 |
| Median Household Income | 60,956 | 57,338 |
| Average Income per Capita | 26,519 | 28,461 |
Onalaska is located in Washington. Onalaska, Washington has a population of 631. Onalaska is less family-centric than the surrounding county with 22% households with children. The county percentage for households with children is 25%.
The median household income in Onalaska, Washington is $60,956. The median household income for the surrounding county is $57,338 compared to the national median of $66,222. The median age of people living in Onalaska is 43.7 years.
The average high temperature in July is 75.62 degrees, with an average low temperature in January of 29.38 degrees. The annual precipitation is 58.21.
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