| Harbor Heights VpoGig Harbor | Form 990-N | No figure |
| Roosevelt PTA Bellingham Council 8 3 65Bellingham | Form 990-N | No figure |
| Ridgecrest PTA-Puyallup Council 5 7 44Puyallup | Form 990-EZ | $44,185FY2025 |
| Pace at WoodmoorBothell | Form 990-EZ | $43,816FY2025 |
| Heritage High School Band BoostersVancouver | Form 990-EZ | $43,691FY2025 |
| A G Bell PTSAKirkland | Form 990-N | No figure |
| Sunnyslope P T A Wenatchee Area P T A Council 13-3-30Wenatchee | Form 990-EZ | $43,130FY2025 |
| Cedar Park Elementary PTASeattle | Form 990-EZ | $42,607FY2025 |
| Concord Elementary PTA 6 15 76Seattle | Form 990-N | No figure |
| Cascade High Band and Color Guard BoostersMill Creek | Form 990-EZ | $42,482FY2025 |
| Louisa Boren STEM K-8 PTA 615183Seattle | Form 990-N | No figure |
| Cougar Valley 1 3 14Silverdale | Form 990-EZ | $41,961FY2025 |
| Forest View PTA 7 3 7Tacoma | Form 990-N | No figure |
| Growing Gorillas Cooperative PreschoolDavenport | Form 990-EZ | $41,489FY2025 |
| Madrona P T S A Seattle CouncilSeattle | Form 990-N | No figure |
| Apple Valley Elementary PTOYakima | Form 990-EZ | $41,339FY2026 |
| The Wenatchee High School BandWenatchee | Form 990-EZ | $41,207FY2025 |
| Latvian Medical and Dental AssociationBellevue | Form 990-N | No figure |
| Shadow Lake Elementary PTATacoma | Form 990-N | No figure |
| Campaign for Free College TuitionSeattle | Form 990-N | No figure |
| Prairie View Elementary School Parent Teacher OrganizationSpokane | Form 990-EZ | $40,964FY2025 |
| Organization of Parents and Teachers of Evergreen AcademyBothell | Form 990-N | No figure |
| Lake Washington High School PTSAKirkland | Form 990-EZ | $40,684FY2025 |
| Lowell PTA Tacoma Council 10 9 115Tacoma | Form 990-N | No figure |
| South Whidbey Schools Performing Arts BoostersLangley | Form 990-N | No figure |
| Ohs Parents of the Senior ClassOlympia | Form 990-N | No figure |
| Conway School PTOMount Vernon | Form 990-N | No figure |
| Olympia Master Builders Education FoundationOlympia | Form 990-EZ | $39,601FY2024 |
| Lowell PTA Bellingham Council 8 3 45Bellingham | Form 990-N | No figure |
| Mount Vernon Public Schools FoundationMount Vernon | Form 990-EZ | $39,226FY2025 |
| Maltby Parent Teacher OrganizationSnohomish | Form 990-EZ | $39,218FY2025 |
| Partners in Emergency PreparednessOlympia | Form 990-N | No figure |
| Pacific Northwest Regional Council of Carpenters Scholarship FundKent | Form 990 | $39,094FY2024 |
| Vietnam Scholarship FoundationSammamish | Form 990-N | No figure |
| Cascade Ridge Elementary PTSA 2 6 2Sammamish | Form 990-EZ | $38,768FY2025 |
| Bellevue Instrumental BoostersBellevue | Form 990-N | No figure |
| SHS Music BoostersSteilacoom | Form 990-N | No figure |
| Center for Mindful Body AwarenessSeattle | Form 990-N | No figure |
| Kennydale PTATacoma | Form 990-N | No figure |
| Helen Baller PTACamas | Form 990-EZ | $37,115FY2025 |
| Tiny SparklesRedmond | Form 990-N | No figure |
| North Central High School Alumni Association Educational FoundationSpokane | Form 990-N | No figure |
| McKenny Parent Teacher AssociationOlympia | Form 990-N | No figure |
| The Center School Community AssociationSeattle | Form 990-N | No figure |
| Newport Band Parents AssociationBellevue | Form 990-EZ | $36,390FY2025 |
| Prune Hill Elementary PTACamas | Form 990-EZ | $35,845FY2025 |
| Hands for a Bridge FoundationSeattle | Form 990-N | No figure |
| Olympic Park AssociatesOlympia | Form 990-N | No figure |
| Salmon Creek PTA Vancouver Council 3 7 70Tacoma | Form 990-N | No figure |
| Moran Prairie Elementary School Parent Teachers GroupSpokane | Form 990-N | No figure |