Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| Re SourcesBellingham | Form 990 | $2,378,603FY2025 |
| Vashon-Maury Island Land TrustVashon | Form 990 | $2,228,864FY2025 |
| Whatcom Land TrustBellingham | Form 990 | $2,218,745FY2025 |
| Methow Valley Sports Trails AssociationWinthrop | Form 990 | $2,107,378FY2026 |
| Environmental Coalition of South SeattleSeattle | Form 990 | $1,933,435FY2025 |
| Northwest Watershed InstitutePort Townsend | Form 990 | $1,895,969FY2025 |
| EcoadaptBainbridge Island | Form 990 | $1,854,918FY2024 |
| TFTSeattle | Form 990 | $1,747,666FY2024 |
| Washington Resource Conservation and Development CouncilYakima | Form 990 | $1,728,012FY2024 |
| American Friends of Canadian ConservationBellingham | Form 990 | $1,723,171FY2025 |
| Urban Forest Carbon RegistrySeattle | Form 990 | $1,695,590FY2025 |
| Bellevue Botanical Garden SocietyBellevue | Form 990 | $1,689,532FY2025 |
| Spark NorthwestSeattle | Form 990 | $1,587,472FY2025 |
| Okanogan Land TrustOkanogan | Form 990 | $1,550,657FY2025 |
| Clean and Prosperous America Education FundSeattle | Form 990 | $1,506,210FY2025 |
| Pipeline Safety TrustBellingham | Form 990 | $1,454,366FY2025 |
| Sustainable SeattleSeattle | Form 990 | $1,445,730FY2024 |
| EarthgenSeattle | Form 990 | $1,409,757FY2025 |
| Puget Soundkeeper AllianceSeattle | Form 990 | $1,357,293FY2025 |
| Olympia Coalition for Ecosystems PreservationOlympia | Form 990 | $1,338,326FY2025 |
| Garden Raised BountyOlympia | Form 990 | $1,336,964FY2025 |
| Feiro Marine Life CenterPort Angeles | Form 990 | $1,335,211FY2024 |
| Stewardship PartnersSeattle | Form 990 | $1,313,676FY2025 |
| Earth EconomicsTacoma | Form 990 | $1,310,040FY2025 |
| Mount St Helens InstituteAmboy | Form 990 | $1,269,294FY2025 |
| Mini Mart City ParkSeattle | Form 990 | $1,255,868FY2025 |
| Basel Action NetworkSeattle | Form 990 | $1,241,049FY2024 |
| Fuse Innovation FundSeattle | Form 990 | $1,217,518FY2025 |
| Mangrove Action ProjectSeattle | Form 990 | $1,213,532FY2024 |
| Nature Vision IncWoodinville | Form 990 | $1,110,053FY2026 |
| Northwest Natural Resource GroupSeattle | Form 990 | $1,109,556FY2025 |
| Pacific Northwest Pollution Control AssociationGig Harbor | Form 990 | $1,055,321FY2024 |
| Mt Adams InstituteTrout Lake | Form 990 | $1,054,506FY2025 |
| Adopt-a-Stream FoundationEverett | Form 990 | $1,040,173FY2025 |
| Friends of LakewoodLakewood | Form 990 | $1,016,087FY2024 |
| North Olympic Land TrustPort Angeles | Form 990 | $1,012,428FY2025 |
| Coastal and Estuarine Research FederationSeattle | Form 990 | $982,659FY2024 |
| The Lands CouncilSpokane | Form 990 | $969,376FY2024 |
| FuturewiseSeattle | Form 990 | $967,110FY2024 |
| Pacific Northwest Pollution Prevention Resource CenterEverett | Form 990 | $961,784FY2025 |
| Phoenix ConservancyPullman | Form 990 | $940,331FY2025 |
| Mason County Climate JusticeShelton | Form 990 | $938,911FY2025 |
| Remember LandBattle Ground | Form 990 | $933,180FY2025 |
| Environmental Science CenterBurien | Form 990 | $924,254FY2025 |
| Cascade Forest ConservancyVancouver | Form 990 | $921,832FY2024 |
| Burn Design LabVashon | Form 990 | $919,856FY2025 |
| Center for Sustainable InfrastructureOlympia | Form 990 | $862,394FY2024 |
| Blue Mountain Land TrustWalla Walla | Form 990 | $858,244FY2024 |
| Nisqually River FoundationOlympia | Form 990 | $857,841FY2024 |
| Sacred Earth FoundationGoldendale | Form 990 | $855,826FY2024 |
51 to 100 of 822