Data / Nonprofits / California / Social science
Social science nonprofits in California: 252 registered with the IRS
252 social science nonprofits are registered with the IRS in California, 244 of them 501(c)(3) charities; the 78 that report revenue took in $234.7 million. The most are in San Francisco (25), Los Angeles (15), San Diego (12). The largest by revenue: Buck Institute for Research On Aging ($57.2 million), RSF Social Finance Inc ($41 million), Esalen Institute ($22.4 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Buck Institute for Research On Aging | Novato | 501(c)(3) | 2014 | $57.2 million | $132.3 million | 2025-06 |
| RSF Social Finance Inc | San Francisco | 501(c)(3) | 1942 | $41 million | $108.4 million | 2024-12 |
| Esalen Institute | San Francisco | 501(c)(3) | 1965 | $22.4 million | $70.3 million | 2024-12 |
| Global Fund for A New Economy Inc | Alameda | 501(c)(3) | 2024 | $17.9 million | $12.9 million | 2025-12 |
| Out & Equal | Oakland | 501(c)(3) | 2003 | $14.6 million | $15.2 million | 2025-06 |
| Center for Applied Research Solutions Inc | Santa Rosa | 501(c)(3) | 2002 | $12.8 million | $9.7 million | 2024-12 |
| San Diego Volunteer Lawyer Program Inc | San Diego | 501(c)(3) | 1984 | $5.9 million | $9.5 million | 2025-06 |
| L S B Leakey Foundation FR Resrch To Mans Origin Behaviour & Srvival | San Francisco | 501(c)(3) | 1968 | $5.2 million | $46.5 million | 2025-08 |
| Children and Family Futures Inc | Irvine | 501(c)(3) | 1998 | $5.1 million | $4.1 million | 2024-12 |
| MK Level Playing Field Institute | Oakland | 501(c)(3) | 2001 | $4.5 million | $4.2 million | 2024-12 |
| Global Witness Foundation | Palo Alto | 501(c)(3) | 2001 | $4.2 million | $9,694 | 2025-04 |
| Molina Family Foundation | Los Alamitos | 501(c)(3) | 2007 | $3.8 million | $19.9 million | 2025-12 |
| Next River | Oakland | 501(c)(3) | 2023 | $3 million | $2.7 million | 2024-12 |
| California Changelawyers | San Francisco | 501(c)(3) | 2015 | $2.9 million | $4.5 million | 2024-12 |
| Curious Cases Inc | San Francisco | 501(c)(3) | 2023 | $2.5 million | $1.4 million | 2024-12 |
| California Chapter American Planning Association | Sacramento | 501(c)(6) | 1983 | $2.2 million | $2 million | 2024-12 |
| Visual Communications Media | Los Angeles | 501(c)(3) | 1972 | $2 million | $1.8 million | 2024-12 |
| Sphere Institute | Burlingame | 501(c)(3) | 1997 | $1.8 million | $26 million | 2024-12 |
| Center for Scholars & Storytellers | Ventura | 501(c)(3) | 2023 | $1.7 million | $1.3 million | 2025-12 |
| Superbloom Design | San Francisco | 501(c)(3) | 2015 | $1.6 million | $208,888 | 2024-12 |
| Bay Area Gestalt Institute | San Francisco | 501(c)(3) | 2012 | $1.5 million | $373,066 | 2025-12 |
| Integral Community Solutions Institute | Fresno | 501(c)(3) | 2016 | $1.4 million | $1.2 million | 2025-06 |
| American Institute for Behavioral Research and Technology | Vista | 501(c)(3) | 2013 | $1.3 million | $900,014 | 2025-12 |
| Good Energy Collective Incorporated | Sacramento | 501(c)(3) | 2021 | $1.3 million | $1.4 million | 2024-12 |
| Seasteading Institute | Oakland | 501(c)(3) | 2009 | $1.3 million | $2 million | 2025-12 |
| Amplified Impact Partners | San Diego | 501(c)(3) | 2009 | $1.1 million | $1.4 million | 2025-06 |
| Institute for Jewish and Community Research | San Francisco | 501(c)(3) | 1999 | $1.1 million | $4.4 million | 2024-12 |
| Other 98 Percent Action Inc | Oakland | 501(c)(4) | 2004 | $1 million | $673,861 | 2025-12 |
| The Valley Economic Alliance | Sherman Oaks | 501(c)(3) | 1995 | $1 million | $1.7 million | 2025-06 |
| Western Economic Association International | Fountain Vly | 501(c)(3) | 1973 | $998,871 | $3.9 million | 2025-12 |
| Jimena Inc | San Francisco | 501(c)(3) | 2008 | $849,567 | $1 million | 2024-12 |
| Western Institute for Social Research | Berkeley | 501(c)(3) | 1975 | $654,100 | $210,998 | 2025-06 |
| Center for Islamophobia Studies | Berkeley | 501(c)(3) | 2015 | $570,923 | $427,282 | 2024-12 |
| Atheist Alliance of America | Sacramento | 501(c)(3) | 1993 | $566,018 | $545,545 | 2025-04 |
| Population Communication | Pasadena | 501(c)(3) | 1977 | $523,226 | $3.3 million | 2024-12 |
| Solidarity Research Center | Los Angeles | 501(c)(3) | 2015 | $511,630 | $193,052 | 2025-06 |
| International Society for Human Ethology | San Diego | 501(c)(3) | 2002 | $485,083 | $3 million | 2024-12 |
| Global Game Jam | Laguna Beach | 501(c)(3) | 2014 | $455,813 | $151,751 | 2025-03 |
| Institute for Holotropics | Novato | 501(c)(3) | 2014 | $430,350 | $148,820 | 2024-12 |
| Don Norman Design Award | Del Mar | 501(c)(3) | 2023 | $392,462 | $160,607 | 2025-12 |
| Pacific Sociological Association | Berkeley | 501(c)(3) | 2017 | $360,249 | $810,009 | 2025-06 |
| Vijay Amritraj Foundation | Tarzana | 501(c)(3) | 2023 | $359,974 | $504,293 | 2025-12 |
| California Women Lead | Sacramento | 501(c)(3) | 1976 | $353,249 | $66,054 | 2025-12 |
| American Governance Foundation Inc | San Francisco | 501(c)(3) | 2018 | $334,255 | $308,955 | 2024-12 |
| Telosa Community Foundation | Santa Rosa | 501(c)(3) | 2022 | $308,210 | $131,966 | 2024-12 |
| Santa Barbara Institute for Consciousness Studies | Santa Barbara | 501(c)(3) | 2003 | $273,664 | $3.4 million | 2024-12 |
| Center for Partnership Studies | Carmel | 501(c)(3) | 1992 | $263,281 | $188,192 | 2025-12 |
| Gen Next Foundation | Irvine | 501(c)(3) | 2010 | $258,246 | $138,086 | 2024-12 |
| C G Jung Study Center | Hermosa Beach | 501(c)(3) | 2002 | $186,683 | $311,101 | 2024-12 |
| Atlantean Gardens | Encino | 501(c)(3) | 2015 | $169,120 | $469,617 | 2024-12 |
| Peace Creations | San Ramon | 501(c)(3) | 1995 | $158,165 | $1,921 | 2025-12 |
| Glendon Association | Santa Barbara | 501(c)(3) | 1982 | $149,372 | $150,973 | 2025-12 |
| The National Institute for Play | Carmel Valley | 501(c)(3) | 2007 | $133,994 | $74,214 | 2025-12 |
| Institute for International Criminal Investigation | Sacramento | 501(c)(3) | 2001 | $114,512 | $136,016 | 2025-12 |
| Omega Point Institute | Santa Barbara | 501(c)(3) | 1997 | $114,449 | $509,154 | 2025-12 |
| Liberated Ethnic Studies Model Curriculum Consortium | Whittier | 501(c)(3) | 2022 | $108,047 | $10,287 | 2025-12 |
| National Womens History Project | Santa Rosa | 501(c)(3) | 1985 | $105,373 | $55,626 | 2024-12 |
| Human Behavior and Evolution Society Inc | Redlands | 501(c)(3) | 2009 | $95,793 | $808,679 | 2025-06 |
| Chartered Institute of Arbitrators North America Inc | Glendale | 501(c)(3) | 2014 | $94,206 | $145,884 | 2024-12 |
| Institute for Families and Nannies | San Francisco | 501(c)(3) | 2016 | $90,187 | $26,099 | 2024-12 |
| Mother Divine Institute of Sacred Sciences | Pasadena | 501(c)(3) | 1999 | $84,244 | $1.2 million | 2025-12 |
| Bramble Center for Informal Research Inc | San Diego | 501(c)(3) | 2024 | $80,000 | $51,920 | 2024-12 |
| Bayes Impact | San Francisco | 501(c)(3) | 2026 | $77,900 | $46,288 | 2021-12 |
| New Way California Foundation | Antelope | 501(c)(3) | 2019 | $75,000 | $229,978 | 2024-12 |
| Institute for Frontier Science | Oakland | 501(c)(3) | 1996 | $66,856 | $766,916 | 2025-12 |
| Advantage Public Institute | Chino | 501(c)(3) | 2017 | $54,261 | $1 | 2025-12 |
| Consumer Center for Resources | Los Angeles | 501(c)(3) | 2014 | $45,804 | $1,132 | 2025-12 |
| American Sudanese Archaeological Research Center | Los Alamos | 501(c)(3) | 2017 | $44,183 | $29,717 | 2025-12 |
| Kitechild | Malibu | 501(c)(3) | 2010 | $31,796 | $19,980 | 2024-06 |
| Social Research Applications | Los Altos HLS | 501(c)(3) | 1986 | $30,023 | $26.8 million | 2025-12 |
| Research Group On Socialism and Democracy Inc | Pacifica | 501(c)(3) | 2006 | $28,151 | $10,072 | 2025-12 |
| Anthropological Research Contributions Inc | Littlerock | 501(c)(3) | 2019 | $21,277 | $1 | 2025-12 |
| Berkeley Technical Management | Berkeley | 501(c)(3) | 2024 | $17,203 | $1 | 2024-12 |
| Mojave Desert Gem and Mineral Society | Barstow | 501(c)(3) | 2025 | $7,802 | $1 | 2023-12 |
| Pan Cretan Chapter of Marin and Sonoma Counties Inc | Petaluma | 501(c)(7) | 2014 | $6,835 | $23,013 | 2024-12 |
| Spirit Vitamins Inc | Santa Monica | 501(c)(3) | 2023 | $1,174 | $1 | 2023-12 |
| Inland Empire Hispanic Leadership Council | Riverside | 501(c)(3) | 2009 | $970 | $22,724 | 2024-12 |
| Topicquests Foundation | Temecula | 501(c)(3) | 2015 | $50 | $2,905 | 2025-12 |
| Advancing Girls | Chula Vista | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Afghanistan International Academic Research Association | San Diego | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Allies for Micronesia Project | Malibu | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Alphacommons Foundation | Ladera Ranch | 501(c)(3) | 2026 | |||
| Alternative Revenue Institute Inc | Palo Alto | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Ante Meridiem Incorporated | Santa Cruz | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Antipornography Org | Los Angeles | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Arc Asia Research Center Foundation | Cerritos | 501(c)(3) | 2012 | $6,313 | 2024-12 | |
| Arguments Into Agreements Mediation Apc | Irvine | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Armenian Entertainment Center Inc | Glendale | 501(c)(3) | 2023 | $0 | $0 | 2025-04 |
| Association for Analytical Learning About Islam and Muslim Societies | Stanford | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Attention Strategies | Berkeley | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Automatic Radio Frequency Techniques Group Inc | San Jose | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Avenew Community Foundation | Mammoth Lakes | 501(c)(3) | 2008 | $0 | $0 | 2024-12 |
| Biofeedback Institute of L A | Los Angeles | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| British Women Writers Association | Fullerton | 501(c)(3) | 2026 | $0 | $0 | 2026-06 |
| Bruin Hedge Fund | Los Angeles | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Building Blocks Social Skills Development & Learning Inc | Hemet | 501(c)(3) | 2024 | |||
| C-Economy Inc | DSRT Hot SPGS | 501(c)(3) | 2018 | $0 | $0 | 2026-03 |
| California African-American Genealogical Society Inc | Los Angeles | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| California Institute for Peruvian Studies | Palmdale | 501(c)(3) | 1986 | $0 | $0 | 2025-09 |
| California Institute of International Studies | Palo Alto | 501(c)(3) | 1965 | $504,351 | 2025-12 | |
| California Justice Collaborative | Stockton | 501(c)(3) | 2023 | $1 | 2025-12 | |
| California Sociological Association | Friant | 501(c)(3) | 2010 | $0 | $0 | 2025-08 |
| Calvary Hill Social Services | San Francisco | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Celestia Foundation Inc | Cerritos | 501(c)(3) | 2015 | $0 | $0 | 2025-06 |
| Center for Altruism Research and Education | Sebastopol | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Center for Attention Rehabilitation and Education | Corte Madera | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Center for Educational Research and Development | San Diego | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Center for Effective Government | Santa Monica | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Center for Professional Examination Accountability | Coulterville | 501(c)(3) | 2026 | |||
| Center for Research in Traditional Culture of the Americas | San Diego | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Center for Visionary Law Business and Public Policy | Oakland | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Center for the Study of Oligarchs | Los Angeles | 501(c)(3) | 2025 | $1 | 2024-12 | |
| Chaldean and Middle Eastern Social Services | El Cajon | 501(c)(3) | 2006 | |||
| Chico American Marketing Association | Oroville | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Chronorecord Association | Fullerton | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Coleman Research Group | San Mateo | 501(c)(3) | 2022 | $0 | $0 | 2026-06 |
| Coming Home Experience Institute | Los Angeles | 501(c)(3) | 2026 | $26,179 | 2025-12 | |
| Common Data Inc | Oakland | 501(c)(3) | 2026 | |||
| Consciousness Research Foundation | San Francisco | 501(c)(3) | 2025 | |||
| Creative Catholic Works Inc | Menlo Park | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Creative Change Productions | Santa Rosa | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Culturator | Mountain View | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| David Suzuki Foundation USA | Sacramento | 501(c)(3) | 1994 | $0 | $0 | 2025-08 |
| Dawoodi Bohra Lawyers Association A Merica | Calabasas | 501(c)(3) | 2026 | |||
| Democracy Rules | San Francisco | 501(c)(4) | 2023 | $0 | $0 | 2024-12 |
| Design Studies Forum Inc | Santa Barbara | 501(c)(3) | 2007 | $0 | $0 | 2024-12 |
| Diverse Sexualities Research and Education Institute | San Francisco | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Dr Courtney Durdle Foundation | Los Angeles | 501(c)(3) | 2025 | |||
| Economics of Generative Ai Research Lab | San Francisco | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| El Dorado County Bar Association | El Dorado HLS | 501(c)(6) | 2013 | $0 | $0 | 2024-05 |
| El Nil Research | Los Angeles | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Elasmotech Labs | Orange | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Endangered Voices Initiative Inc | San Francisco | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Ethnoworks NP | San Leandro | 501(c)(3) | 2026 | |||
| Eudaimonia Institute Inc | Nevada City | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Fallen Angels & Angeles Caidos | Fullerton | 501(c)(3) | 2025 | |||
| Far Western Foundation | Davis | 501(c)(3) | 2022 | $73,938 | 2025-08 | |
| Find the Cure | San Jose | 501(c)(3) | 2025 | |||
| Foundation for Research in Economics and Education | Burbank | 501(c)(3) | 1970 | $0 | $0 | 2025-06 |
| Foundation for the Right To Effective Treatment Inc | Oceanside | 501(c)(3) | 2021 | $0 | $0 | 2025-05 |
| Francis E McGovern Foundation | Kentfield | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Garibay Institute | Hidden Hills | 501(c)(3) | 2025 | $0 | $1 | 2024-12 |
| Global Wealth History Institute | San Francisco | 501(c)(3) | 2002 | $0 | $0 | 2026-03 |
| HVC Nonprofit Public Benefit Corporation | Claremont | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Harvest Financial Literacy Foundation | West Covina | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Heart of Anthropology | Richmond | 501(c)(3) | 2015 | $0 | $0 | 2023-12 |
| Henry George School of Social Science of San Francisco | San Francisco | 501(c)(3) | 1951 | $0 | $0 | 2025-06 |
| Hispanic Neuropsychological Society | Lake Forest | 501(c)(3) | 2016 | $0 | $8,368 | 2025-12 |
| Hunan Association of San Francisco Bay Area | Milpitas | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Institute for Philosophy Technology and Politics | Menlo Park | 501(c)(3) | 2024 | |||
| Institute for the Study of Natural and Cultural Resources | Berkeley | 501(c)(3) | 1995 | $0 | $0 | 2023-09 |
| Institute of Aliveness Inc | Presidio | 501(c)(3) | 2026 | |||
| Institutions Law and Security Center Inc | Pasadena | 501(c)(3) | 2014 | $1 | 2024-12 | |
| Interfaith Communities United for Justice and Peace | W Hollywood | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| International Comparisons | Hayward | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| International Futures Forum - Us | Carlsbad | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| International Institute for Sustainable Transportation | Santa Cruz | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| International Society for Military Ethics | Pacific Grove | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| International Society for the Comparative Study of Civilizations | Aptos | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Iranian American Psychological Association | Los Angeles | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| JD Lee Foundation | Riverside | 501(c)(3) | 2025 | |||
| Kirakira Institute | Los Angeles | 501(c)(3) | 2026 | |||
| Korean Commercial Arbitration Board | Los Angeles | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Learning Research Association | Long Beach | 501(c)(3) | 1996 | $0 | $0 | 2025-12 |
| Leocadia | Newport Beach | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Libertas Institute | Mission Viejo | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Logan John Mentzer Memorial Fund Inc | Napa | 501(c)(3) | 2024 | |||
| Los Angeles Chapter Intl Society | Harbor City | 501(c)(3) | 2016 | $0 | $0 | 2023-12 |
| Lynn and Stephen Read Foundation | Redondo Beach | 501(c)(3) | 2026 | |||
| Macrocosm USA | Cambria | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Main Street Taxpayer Association A Public and Charitable Nonprofit C | Rcho Santa Fe | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Malintzin Society Inc | Santa Monica | 501(c)(3) | 2010 | $0 | $2,319 | 2025-12 |
| Marin Democratic Socialists of America | Fairfax | 501(c)(4) | 2024 | $0 | $0 | 2025-12 |
| Matilija University | Ojai | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Moon Economics Institute | Irvine | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Morning Star Foundation | Woodland | 501(c)(3) | 2014 | $18.6 million | 2024-12 | |
| Mosaic Therapy Collective | Santa Barbara | 501(c)(3) | 2022 | $17,360 | 2025-04 | |
| Nanka Fukushima Kenjin Kai Inc | Fullerton | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| National Asian-Pacific Islander Council Corp | Fountain Vly | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| National Council for Geocosmic Research Inc | San Diego | 501(c)(3) | 2009 | $0 | $0 | 2026-06 |
| National Council for Geocosmic Research Inc | San Francisco | 501(c)(3) | 2009 | $0 | $0 | 2026-06 |
| National Council for Geocosmic Research Inc | Sherman Oaks | 501(c)(3) | 2009 | $0 | $0 | 2025-06 |
| Navara Institute | El Cerrito | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Near East Institute | Santa Ana | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Network for Educational Opportunity | Fresno | 501(c)(3) | 2001 | $0 | $0 | 2024-06 |
| New Equations Foundation | San Anselmo | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Newhope Immigrant | City Industry | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Nomorepoorpeople Org Corporation | Oakland | 501(c)(3) | 2025 | |||
| Oc Norml Orange County Chapter of Norml the National Organization Fo | Lake Forest | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Orange County Student Law Review | Irvine | 501(c)(3) | 2021 | $0 | $0 | 2023-12 |
| Organization for Paranormal Understanding and Support | Sacramento | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Organization for the Study of Communication Language and Gender | Chico | 501(c)(3) | 2003 | $0 | $0 | 2025-06 |
| Our Knowledge for Everyone | Beverly Hills | 501(c)(3) | 2022 | $3,587 | 2025-12 | |
| Pacific Academy for Advanced Studies | Burbank | 501(c)(3) | 1977 | $0 | $0 | 2025-06 |
| Pacific Coast Archaeological Society | Costa Mesa | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Pacific Policy Research Foundation | Granite Bay | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Pasadena Lapidary Society Inc | Pasadena | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Paudelian Research Institute | Rohnert Park | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Polish American Foundation for Econ Omic Research & Education | Torrance | 501(c)(3) | 2001 | $1 | 2023-12 | |
| Public Goods Institute | Encinitas | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Purpose Project Inc | Napa | 501(c)(3) | 2017 | $0 | $49,418 | 2025-12 |
| Radicalxchange Foundation LTD | Moraga | 501(c)(3) | 2019 | $493,762 | 2024-12 | |
| Real Reason | Oakland | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Reason Center | Sacramento | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Red Tent Global | Marina DL Rey | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Rescue the Children of Africa | Ontario | 501(c)(3) | 2021 | $0 | $0 | 2023-07 |
| Research and Learning Solutions | Granada Hills | 501(c)(3) | 2025 | |||
| Research and Policy Institute of California | Sacramento | 501(c)(3) | 2004 | |||
| Rhythm Society | Oakland | 501(c)(3) | 2006 | |||
| Rix Road Inc | Oakland | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Root Code Collective | Sacramento | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| San Diego County Prosperity Institute | San Diego | 501(c)(4) | 2014 | $0 | $0 | 2024-11 |
| San Francisco Astrological Society | San Francisco | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| San Francisco Bay Area Chapter Association for Contextual Behavio | San Francisco | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| San Luis Obispo County Veteran Services Collaboration | Atascadero | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Santa Barbara Graduate Inst Center for Clinical Studies and Research | Santa Barbara | 501(c)(3) | 2002 | $14,705 | 2024-12 | |
| Schluger-Ammons Study Club | Oak Park | 501(c)(3) | 2025 | $10,000 | 2025-12 | |
| Science of Laws Institute | Poway | 501(c)(3) | 1995 | $5,035 | 2025-12 | |
| Senior Moments Inc | Compton | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Services Along the Nile International Inc | Downey | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Sfecon | Chico | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Share the Money | Sebastopol | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Social Issues Research | Altadena | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Society for Open Inquiry in Behavioral Science | Fallbrook | 501(c)(3) | 2022 | $2,014 | 2024-12 | |
| Society for the Phenomenology of Religious Experie | Mount Shasta | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Sonoma County Dsa | Rohnert Park | 501(c)(4) | 2026 | $0 | $0 | 2025-12 |
| Space Zero Foundation | Westlake VLG | 501(c)(3) | 2026 | |||
| Sri Brahma Vidya Sampradaya | Anaheim | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Sunshine Africa Education Inc | Castro Valley | 501(c)(3) | 2018 | $0 | $0 | 2025-11 |
| Suppressed Histories Archives | Richmond | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Technet Foundation Inc | Santa Clara | 501(c)(3) | 2010 | $1 | 2025-12 | |
| The Berkeley Policy Institute Inc | Emeryville | 501(c)(3) | 2015 | $1.5 million | 2024-12 | |
| The Iranica Institute | Irvine | 501(c)(3) | 2002 | $0 | $0 | 2023-12 |
| The Korean Innovation Research Cent Er Corporation | Los Angeles | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| The Oasis | San Diego | 501(c)(3) | 2024 | $0 | $0 | 2025-07 |
| Tiananmen Research | Arcadia | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Transformation Center Foundation | San Diego | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Transparent Democracy Org | Los Altos HLS | 501(c)(3) | 2006 | $0 | $0 | 2024-12 |
| Transpersonal Institute | Palo Alto | 501(c)(3) | 1969 | $0 | $0 | 2025-12 |
| Tsakopoulos Hellenic Foundation | Sacramento | 501(c)(3) | 1991 | $67,765 | 2025-06 | |
| United Nations Academy of Social Sciences | Irvine | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Unity Welcome Center Inc | San Francisco | 501(c)(3) | 2024 | |||
| Unleashing Our Future Inc | Aptos | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Us International Economics & Technology Coorperation | Temple City | 501(c)(3) | 2018 | $0 | $0 | 2026-02 |
| Vals Sweing | Trabuco Cyn | 501(c)(3) | 2024 | |||
| Vedanta Institute Los Angeles Inc | San Diego | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Ventura County Archaeological Society | Westlake VLG | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Ventura County Womens Forum Collaborative | Camarillo | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Voice of the Chinese Medicine Foundation Inc | Cupertino | 501(c)(3) | 2002 | $9,496 | 2025-12 | |
| Women Equity International Inc | San Francisco | 501(c)(3) | 2024 | $0 | $0 | 2026-05 |
| World Economic Council for Urban Development Inc | Sacramento | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Yolo County Womens History Month Committee | Woodland | 501(c)(3) | 2012 | $0 | $0 | 2026-06 |
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.