Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| American River ConservancyColoma | Form 990 | $2,335,663FY2024 |
| Hydrologic Research CenterSan Diego | Form 990 | $2,325,761FY2025 |
| Vida Verde Nature EducationSan Gregorio | Form 990 | $2,324,071FY2024 |
| Water Education FoundationSacramento | Form 990 | $2,299,540FY2024 |
| California Clean Energy FundBerkeley | Form 990 | $2,295,602FY2024 |
| Golden State Land Conservancy IncorporatedSanta Rosa | Form 990 | $2,295,135FY2024 |
| San Diego CoastkeeperSan Diego | Form 990 | $2,281,258FY2024 |
| Ruth Bancroft Garden IncWalnut Creek | Form 990 | $2,268,806FY2025 |
| Tijuana Estuary FoundationImperial Beach | Form 990 | $2,256,838FY2024 |
| Environmental Health CoalitionNational City | Form 990 | $2,242,905FY2025 |
| White Buffalo Land TrustSanta Barbara | Form 990 | $2,242,324FY2024 |
| Story of Stuff ProjectBerkeley | Form 990 | $2,232,188FY2024 |
| San Diego Canyonlands IncSan Diego | Form 990 | $2,230,904FY2025 |
| West Oakland Environmental Indicators ProjectOakland | Form 990 | $2,221,103FY2024 |
| Marin Audubon Society IncorporatedMill Valley | Form 990 | $2,200,421FY2025 |
| Climate RegistryLos Angeles | Form 990 | $2,198,246FY2025 |
| Mendocino Land Trust IncorporatedFort Bragg | Form 990 | $2,189,977FY2025 |
| Northern California Resource CenterFort Jones | Form 990 | $2,180,999FY2024 |
| Sierra Streams InstituteNevada City | Form 990 | $2,168,132FY2025 |
| Civilization Research InitiativeCarlsbad | Form 990 | $2,154,946FY2024 |
| International Rivers NetworkOakland | Form 990 | $2,151,504FY2025 |
| Coalition for Clean AirLos Angeles | Form 990 | $2,149,048FY2025 |
| San Francisco Bay Bird ObservatorySan Jose | Form 990 | $2,082,755FY2025 |
| Living Coast Discovery CenterChula Vista | Form 990 | $2,080,665FY2025 |
| Arroyos & Foothills ConservancyPasadena | Form 990 | $2,072,080FY2025 |
| Eastern Sierra Land TrustBishop | Form 990 | $2,057,407FY2025 |
| Calaid FoundationSan Gabriel | Form 990 | $2,026,816FY2025 |
| Redwood Parks ConservancyCrescent City | Form 990 | $2,023,244FY2024 |
| Outward Bound Adventures IncPasadena | Form 990 | $2,020,973FY2024 |
| Cosumnes Culture and WaterwaysPlacerville | Form 990 | $2,019,542FY2025 |
| Explore EcologySanta Barbara | Form 990 | $1,993,161FY2024 |
| Center for Plant Conservation IncWildomar | Form 990 | $1,988,614FY2025 |
| Enrich LaLos Angeles | Form 990 | $1,975,981FY2025 |
| Friends of the Water ConservationgardenEl Cajon | Form 990 | $1,971,645FY2023 |
| Sanctuary Forest IncWhitethorn | Form 990 | $1,967,792FY2024 |
| Guadalupe River Park ConservancySan Jose | Form 990 | $1,960,733FY2024 |
| Yosemite-Sequoia Resource Conservation & Development CouncilOakhurst | Form 990 | $1,936,235FY2025 |
| Russian RiverkeeperHealdsburg | Form 990 | $1,906,716FY2025 |
| Berkeley Earth IncBerkeley | Form 990 | $1,892,923FY2024 |
| Roots of SuccessBerkeley | Form 990 | $1,888,608FY2025 |
| Laguna Canyon FoundationLaguna Beach | Form 990 | $1,875,509FY2025 |
| Groundwork San Diego - Chollas CreekSan Diego | Form 990 | $1,854,435FY2025 |
| Lakesides River Park ConservancyLakeside | Form 990 | $1,835,388FY2025 |
| Vallejo Community Organizations Recycling IncVallejo | Form 990 | $1,831,113FY2025 |
| California Alliance for Community CompostingSan Francisco | Form 990 | $1,830,872FY2024 |
| UNDAUNTEDK12San Francisco | Form 990 | $1,828,388FY2025 |
| Huntington Beach Wetlands ConservancyHuntington Beach | Form 990 | $1,826,401FY2025 |
| Friends of El MirageCalifornia City | Form 990 | $1,819,975FY2025 |
| The Go Green Initiative AssociationPleasanton | Form 990 | $1,813,386FY2025 |
| Fallbrook Land ConservancyFallbrook | Form 990 | $1,811,475FY2024 |
251 to 300 of 3,142