Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| San Diego Zoo Wildlife AllianceSan Diego | Form 990 | $437,607,695FY2024 |
| Monterey Bay Aquarium FoundationMonterey | Form 990 | $208,135,651FY2024 |
| Wildlife Conservation Network IncSan Francisco | Form 990 | $86,052,292FY2025 |
| San Diego Humane Society and SPCASan Diego | Form 990 | $67,557,221FY2025 |
| Aquarium of the PacificLong Beach | Form 990 | $59,309,760FY2024 |
| San Francisco Society for the Prevention of Cruelty to AnimalsSan Francisco | Form 990 | $58,331,987FY2025 |
| Conservation Society of CaliforniaOakland | Form 990 | $35,008,424FY2025 |
| Point Reyes Bird ObservatoryPetaluma | Form 990 | $31,721,037FY2025 |
| Fresnos Chaffee Zoo CorporationFresno | Form 990 | $29,607,528FY2024 |
| Peninsula Humane Society & SPCABurlingame | Form 990 | $28,134,220FY2025 |
| California TroutSan Francisco | Form 990 | $24,697,461FY2025 |
| Helen Woodward Animal CenterRancho Santa Fe | Form 990 | $24,027,619FY2024 |
| Mercy for AnimalsLos Angeles | Form 990 | $23,344,663FY2024 |
| San Francisco Zoological SocietySan Francisco | Form 990 | $23,127,512FY2025 |
| The David Sheldrick Wildlife Trust USA IncLaguna Hills | Form 990 | $22,803,495FY2026 |
| Santa Barbara Zoological FoundationSanta Barbara | Form 990 | $21,787,514FY2024 |
| Greater Los Angeles Zoo AssociationGlendale | Form 990 | $21,322,996FY2025 |
| Humane Society Silicon ValleyMilpitas | Form 990 | $20,877,377FY2025 |
| Animal Legal Defense FundSacramento | Form 990 | $19,716,926FY2025 |
| Marine Mammal CenterSausalito | Form 990 | $18,607,476FY2025 |
| Revive & RestoreSausalito | Form 990 | $16,341,700FY2025 |
| Pasadena Humane SocietyPasadena | Form 990 | $15,839,886FY2024 |
| Sacramento Society for the Prevention of Cruelty to AnimalsSacramento | Form 990 | $15,372,124FY2024 |
| East Bay Society for the Prevention of Cruelty to AnimalsOakland | Form 990 | $14,767,883FY2025 |
| Foster Friends RescueGardena | Form 990 | $14,726,707FY2024 |
| Inter-American Tropical Tuna CommissionLa Jolla | Form 990 | $14,272,243FY2024 |
| Marin Humane SocietyNovato | Form 990 | $14,037,753FY2025 |
| National Marine Mammal Foundation IncSan Diego | Form 990 | $13,912,987FY2024 |
| Los Angeles S P C ALos Angeles | Form 990 | $13,433,897FY2025 |
| Joybound People and Pets Fka Tony Larussas Animal Rescue FoundationWalnut Creek | Form 990 | $13,371,777FY2025 |
| Society for the Prevention of Cruelty to Animals of Monterey CtySalinas | Form 990 | $12,921,716FY2025 |
| Humane Society of Pomona Valley IncPomona | Form 990 | $12,744,528FY2025 |
| Sacramento Zoological SocietySacramento | Form 990 | $12,366,549FY2024 |
| Wildaid IncSan Francisco | Form 990 | $12,015,700FY2025 |
| Community Animal Medicine ProjectSan Pedro | Form 990 | $11,494,574FY2024 |
| Animal SamaritansThousand Palms | Form 990 | $11,365,117FY2024 |
| California Deer AssociationRedding | Form 990 | $11,322,913FY2024 |
| MuttvilleSan Francisco | Form 990 | $10,843,087FY2024 |
| Humane America Animal FoundationClaremont | Form 990 | $10,152,234FY2023 |
| Santa Barbara Humane Society for the Prevention of Cruelty to AnimaSanta Barbara | Form 990 | $9,360,565FY2025 |
| Prestons Planet Foundation IncMalibu | Form 990 | $9,248,728FY2024 |
| Placer County Society for the Prevention of Cruelty to AnimalsRoseville | Form 990 | $8,927,695FY2024 |
| Rancho Coastal Humane SocietyEncinitas | Form 990 | $8,351,511FY2025 |
| Animal Charity EvaluatorsCovina | Form 990 | $7,801,617FY2025 |
| Oscars Place Adoption Center & SanctuaryHopland | Form 990 | $7,648,261FY2025 |
| Wags and WalksLos Angeles | Form 990 | $7,621,671FY2025 |
| Berkeley East Bay Humane Society IncBerkeley | Form 990 | $7,363,409FY2025 |
| Romanian League in Defense of AnimalsConcord | Form 990 | $7,347,691FY2025 |
| Bubye Valley Conservation ResearchPleasanton | Form 990 | $7,260,177FY2024 |
| Dedication and Everlasting Love to AnimalsGlendale | Form 990 | $6,984,782FY2024 |
1 to 50 of 4,595