Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| Puyallup River Watershed CouncilTacoma | Form 990-EZ | $147,839FY2024 |
| Friends of Badger MountainRichland | Form 990 | $147,703FY2024 |
| Center for Environmental Law & PolicySeattle | Form 990-EZ | $147,671FY2024 |
| Gesneriad SocietySeattle | Form 990 | $147,548FY2025 |
| Native Plant Salvage FoundationOlympia | Form 990-EZ | $145,595FY2024 |
| Spokane Zero WasteSpokane | Form 990-EZ | $144,834FY2025 |
| Friends of the Salish SeaAnacortes | Form 990-EZ | $144,740FY2025 |
| Sustainable BallardSeattle | Form 990-EZ | $144,144FY2025 |
| Twin Harbors WaterkeeperRochester | Form 990-EZ | $139,716FY2025 |
| Sound Data Science a Nonprofit CorporationSeattle | Form 990-EZ | $139,540FY2025 |
| Friends of the ConservatorySeattle | Form 990 | $138,983FY2025 |
| Bronze ChapterBow | Form 990-EZ | $138,958FY2024 |
| Master Gardener Foundation of Washington StateYakima | Form 990-EZ | $137,671FY2025 |
| PropagationnationUniversity Place | Form 990-EZ | $136,129FY2025 |
| Northwest Perennial AllianceBellevue | Form 990-EZ | $135,411FY2024 |
| Kulshan Carbon TrustBellingham | Form 990-EZ | $134,418FY2024 |
| Green OkanoganTonasket | Form 990-EZ | $134,122FY2025 |
| Indigenous Just TransitionSeattle | Form 990-EZ | $133,434FY2025 |
| Upper Columbia Resource Conservation & Development CouncilSpokane Valley | Form 990-EZ | $132,991FY2024 |
| Seattle Garden ClubSeattle | Form 990 | $131,342FY2025 |
| Farmore WASeattle | Form 990-EZ | $127,160FY2025 |
| Friends of Fort Flagler State ParkNordland | Form 990-EZ | $126,567FY2025 |
| 350 TacomaTacoma | Form 990-EZ | $125,686FY2025 |
| Shine FoundationBellevue | Form 990 | $125,000FY2025 |
| Master Gardener Foundation of King CountyRenton | Form 990 | $124,486FY2025 |
| Pinchot PartnersMorton | Form 990-EZ | $123,614FY2025 |
| Rhody Ridge FoundationBothell | Form 990-EZ | $121,919FY2026 |
| Loon Lake Land ConservancyLoon Lake | Form 990 | $121,839FY2024 |
| KhimstonikToppenish | Form 990-EZ | $118,582FY2025 |
| Eastside Audubon SocietyRedmond | Form 990-EZ | $118,533FY2025 |
| Northwest Community Land Trust CoalitionWinthrop | Form 990-EZ | $118,153FY2024 |
| Sound ActionVashon | Form 990-EZ | $117,719FY2024 |
| L I G H T FoundationElmer City | Form 990-EZ | $116,766FY2025 |
| Forevergreen TrailsTacoma | Form 990-EZ | $115,573FY2025 |
| Clark Skamania FlyfishersVancouver | Form 990-EZ | $115,044FY2025 |
| Northwest Regional Floodplain Management AssociationEllensburg | Form 990-EZ | $111,947FY2025 |
| The English Springer Spaniel Field Trial Assn Foundation IncSeattle | Form 990 | $110,793FY2024 |
| Whatcom Million Trees ProjectBellingham | Form 990-EZ | $110,515FY2025 |
| Kitsap Environmental CoalitionIndianola | Form 990-EZ | $110,319FY2025 |
| Earthviews Conservation SocietyTacoma | Form 990-EZ | $105,719FY2025 |
| Clean Drinking Water ProjectYakima | Form 990-EZ | $104,558FY2025 |
| Lighthouse Environmental ProgramsCoupeville | Form 990 | $103,705FY2025 |
| Master Gardener Foundation of Spokane CountySpokane | Form 990-EZ | $101,520FY2024 |
| MakesoilTacoma | Form 990-EZ | $95,036FY2025 |
| 2030 Districts NetworkSeattle | Form 990-EZ | $94,246FY2024 |
| Pedal ProjectBellingham | Form 990-EZ | $92,822FY2025 |
| Pacific Northwest International Section Air Pollution Control AssoBellevue | Form 990-EZ | $92,015FY2025 |
| Kooskooskie CommonsWalla Walla | Form 990-EZ | $90,931FY2025 |
| Ifta Research FoundationKenneiwck | Form 990 | $89,342FY2025 |
| Pilchuck Audubon SocietySnohomish | Form 990 | $86,669FY2024 |
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