Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| Historic Seattle Preservation FNDNSeattle | Form 990 | $807,411FY2025 |
| Clean Up the CayesOlympia | Form 990 | $801,514FY2024 |
| Communities for a Healthy BayTacoma | Form 990 | $801,286FY2024 |
| Columbia SpringsVancouver | Form 990 | $769,798FY2024 |
| Lower Columbia School GardensLongview | Form 990 | $761,571FY2025 |
| Yakima Greenway FoundationYakima | Form 990 | $757,309FY2024 |
| Tetiaroa SocietyBellevue | Form 990 | $722,823FY2024 |
| National Association of Environmental Professionals IncSeattle | Form 990 | $713,186FY2025 |
| Tacoma Tree FoundationTacoma | Form 990 | $712,586FY2025 |
| Department of BioregionSeattle | Form 990 | $695,862FY2025 |
| Salish Sea SchoolAnacortes | Form 990 | $694,389FY2025 |
| Our HopeSeattle | Form 990 | $673,211FY2024 |
| Tribal Solid Waste Advisory NetworkTekoa | Form 990 | $652,609FY2025 |
| Center for Democratic and Environmental RightsSpokane | Form 990 | $641,740FY2025 |
| Kubota Garden FoundationTukwila | Form 990 | $637,469FY2024 |
| Wild Salmon RiversEdmonds | Form 990 | $608,006FY2024 |
| Global Ocean HealthSeattle | Form 990 | $604,720FY2026 |
| Washington Native Plant SocietySeattle | Form 990 | $603,232FY2024 |
| Smart Buildings Center Education ProgramSeattle | Form 990 | $600,251FY2025 |
| Dishman Hills ConservancySpokane | Form 990 | $598,341FY2025 |
| Foundation for Glacier & Environmental ResearchSeattle | Form 990 | $597,218FY2024 |
| Meerkerk Rhododendron GardensGreenbank | Form 990 | $590,726FY2025 |
| Salmon DefenseOlympia | Form 990 | $589,822FY2024 |
| Canopy Planet FoundationBlaine | Form 990 | $576,055FY2025 |
| Yakima Area Arboretum a Nonprofit CorporationYakima | Form 990 | $571,643FY2024 |
| Pacific Rim Institute for Environmental StewardshipCoupeville | Form 990 | $531,618FY2023 |
| Skyriver FoundationKirkland | Form 990 | $517,012FY2025 |
| American Lands ProjectSeattle | Form 990 | $513,418FY2024 |
| Hanford ChallengeSeattle | Form 990 | $510,900FY2024 |
| Dungeness River Nature CenterSequim | Form 990 | $504,755FY2024 |
| No Olympic Peninsula Resource Consrvation & Development CouncilPort Angeles | Form 990 | $503,896FY2024 |
| Braided RiverSeattle | Form 990 | $502,166FY2025 |
| Lummi Island Heritage TrustLummi Island | Form 990 | $500,694FY2024 |
| South Sound Estuary AssociationOlympia | Form 990 | $474,642FY2025 |
| Foothills Rails to Trails CoalitionPuyallup | Form 990 | $454,558FY2025 |
| Harbor WildwatchGig Harbor | Form 990 | $440,267FY2024 |
| Eastrail PartnersWoodinville | Form 990 | $431,272FY2025 |
| Vashon-Maury Island Nature CenterVashon | Form 990 | $430,163FY2025 |
| Spokane RiverkeeperSpokane | Form 990 | $419,002FY2024 |
| Pacific Coast Salmon CoalitionForks | Form 990 | $411,020FY2025 |
| Waste LoopLeavenworth | Form 990 | $409,045FY2024 |
| Whidbey Environmental Action NetworkLangley | Form 990 | $407,869FY2025 |
| Friends of the Anacortes Community Forest LandsAnacortes | Form 990 | $397,831FY2024 |
| Friends of Hoja NuevaBainbridge Island | Form 990 | $393,909FY2026 |
| Seattle ReconomySeattle | Form 990 | $384,298FY2024 |
| Climate CollaborativeBellingham | Form 990 | $378,379FY2024 |
| Nimiipuu Protecting the EnvironmentPullman | Form 990 | $378,048FY2025 |
| Methow Valley Trails CollaborativeWinthrop | Form 990 | $364,949FY2025 |
| Skagit Watershed CouncilMount Vernon | Form 990 | $363,757FY2025 |
| Got GreenSeattle | Form 990 | $354,188FY2024 |
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