Data / Nonprofits / California / San Anselmo
Nonprofits in San Anselmo, CA: 103 registered with the IRS
103 nonprofits are registered with the IRS in San Anselmo, CA, 92 of them 501(c)(3) charities; the 39 that report revenue took in $82.3 million. The largest by revenue: San Domenico School ($48 million), Side By Side ($13.2 million), Oak Hill School of California ($5 million). Most common causes: education (16), arts, culture and humanities (11), philanthropy, voluntarism and grantmaking foundations (8).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| San Domenico School | Education | 501(c)(3) | 2018 | $48 million | $91.1 million | 2025-06 |
| Side By Side | Mental health and crisis intervention | 501(c)(3) | 1936 | $13.2 million | $21.1 million | 2025-06 |
| Oak Hill School of California | Education | 501(c)(3) | 2001 | $5 million | $2.9 million | 2025-06 |
| Fire Safe Marin | Public safety, disaster preparedness and relief | 501(c)(3) | 1996 | $2.5 million | $552,055 | 2024-12 |
| Hello Housing | Diseases, disorders and medical disciplines | 501(c)(3) | 2004 | $1.4 million | $1.8 million | 2024-12 |
| Stapleton School of Performing Arts | Arts, culture and humanities | 501(c)(3) | 1991 | $1.2 million | $1.6 million | 2025-12 |
| Yes the Ross Valley Schools Foundation | Education | 501(c)(3) | 1984 | $1.2 million | $857,831 | 2025-06 |
| Friends of San Anselmo Parks & Open Space | Recreation and sports | 501(c)(3) | 2019 | $1.1 million | $1.1 million | 2025-06 |
| Little Wishes | Human services | 501(c)(3) | 2003 | $1.1 million | $1.9 million | 2024-12 |
| San Anselmo Montessori School | 501(c)(3) | 1980 | $1 million | $1.5 million | 2025-06 | |
| Ketamine Research Foundation | Mental health and crisis intervention | 501(c)(3) | 2017 | $674,218 | $560,755 | 2024-12 |
| Little Mountain Preschool | Education | 501(c)(3) | 2014 | $572,846 | $386,114 | 2024-12 |
| Awhs Falcon Foundation | Education | 501(c)(3) | 2000 | $486,955 | $101,991 | 2025-06 |
| Sleepy Hollow Home Owners Association of Marin County | 501(c)(4) | 1975 | $466,560 | $699,542 | 2025-12 | |
| Pseads | Education | 501(c)(3) | 2015 | $460,953 | $317,721 | 2025-08 |
| American Legion | 501(c)(19) | 1934 | $457,668 | $119,844 | 2026-05 | |
| Ramble On Productions | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $426,509 | $155,893 | 2025-12 |
| Sleepy Hollow Charitable Foundation | Community improvement and capacity building | 501(c)(3) | 2013 | $373,915 | $3.3 million | 2025-12 |
| Enterprise Futures | Community improvement and capacity building | 501(c)(3) | 2013 | $371,118 | $19,532 | 2024-12 |
| Ross Valley Ecumenical Housing Asso | Housing and shelter | 501(c)(3) | 1978 | $365,239 | $2.2 million | 2024-12 |
| Marin Community Music School | Arts, culture and humanities | 501(c)(3) | 2012 | $276,741 | $38,838 | 2026-06 |
| The Scholarship Foundation at Archie Williams High School | 501(c)(3) | 1966 | $270,981 | $1.7 million | 2025-12 | |
| Ross Valley Children for Change | Youth development | 501(c)(3) | 2016 | $242,971 | $76,178 | 2025-06 |
| Veovera Software Organization | Mutual and membership benefit | 501(c)(6) | 2023 | $219,971 | $319,891 | 2025-12 |
| Wade Thomas Parents Club | 501(c)(3) | 1978 | $151,404 | $189,303 | 2025-06 | |
| Brookside School Parents Club | 501(c)(3) | 1980 | $132,234 | $140,479 | 2025-12 | |
| Friends of the San Anselmo Library | Education | 501(c)(3) | 2001 | $116,616 | $1 million | 2025-06 |
| Friends of Midway Atoll National Wildlife Refuge Inc | Animal-related | 501(c)(3) | 2000 | $87,954 | $120,724 | 2025-09 |
| Interfaith Counseling Center of the Bay Area | Mental health and crisis intervention | 501(c)(3) | 2011 | $87,287 | $27,506 | 2026-06 |
| Zakir Hussain Institute of Music | Arts, culture and humanities | 501(c)(3) | 2025 | $76,127 | $63,526 | 2025-12 |
| Western Alliance for Nature | Environment | 501(c)(3) | 2002 | $70,051 | $7.4 million | 2025-12 |
| Hidden Valley Pto Inc | Education | 501(c)(3) | 2022 | $66,213 | $125,308 | 2024-07 |
| National League of Young Men Inc | Human services | 501(c)(3) | 2010 | $53,929 | $70,423 | 2025-06 |
| Social Dance Cultures A Non-Profit Public Benefit Corporation | Arts, culture and humanities | 501(c)(3) | 2000 | $29,204 | $5,969 | 2025-08 |
| Rotary Club of Ross Valley Foundation | Education | 501(c)(3) | 2009 | $21,080 | $385,168 | 2024-12 |
| Playhouse in San Anselmo | Community improvement and capacity building | 501(c)(3) | 1997 | $12,574 | $165,246 | 2025-12 |
| International Footbag Players Association Incorporated | Recreation and sports | 501(c)(3) | 2002 | $4,325 | $12,942 | 2025-12 |
| Avenya Inc | Environment | 501(c)(3) | 2016 | $1,793 | $20,596 | 2025-12 |
| Adult & Pediatric Spine Research Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2005 | $6.8 million | 2024-12 | |
| Ali Akbar Khan Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| American Legion Auxiliary | 501(c)(19) | 1946 | $0 | $0 | 2026-06 | |
| Artivist Foundation | Arts, culture and humanities | 501(c)(3) | 2020 | $0 | $0 | 2025-06 |
| Aryiis Foundation | 501(c)(3) | 1971 | $15,197 | 2024-12 | ||
| Bahais of San Anselmo | 501(c)(3) | 1965 | ||||
| Barry A Murphy Fund | International, foreign affairs and national security | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Beezone | Education | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Blue Water Foundation | Recreation and sports | 501(c)(3) | 1993 | $0 | $0 | 2026-06 |
| California Retired Teachers Association | 501(c)(4) | 1971 | $0 | $0 | 2025-06 | |
| Chabad of West Marin | Religion-related | 501(c)(3) | 2023 | |||
| Coho Salmon Land Trust | Environment | 501(c)(3) | 2020 | $0 | $0 | 2025-06 |
| Common Sense Marin | Public and societal benefit | 501(c)(4) | 2026 | $0 | $0 | 2025-12 |
| Country Roads Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $18,912 | 2024-12 | |
| Dharma Ground Inc | Religion-related | 501(c)(3) | 2022 | |||
| Diamond Light Center | Religion-related | 501(c)(3) | 2000 | |||
| Familes for Clean Air | Environment | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| First Presbyterian Church of San Anselmo | 501(c)(3) | 1964 | ||||
| Free Range Opera Theater Inc | Arts, culture and humanities | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Friends of the Ross Valley Arts | Arts, culture and humanities | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Friends of the Team Program | Education | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Funger Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $5.1 million | 2025-12 | |
| Garden of Jesus Korean Methodist Church | Religion-related | 501(c)(3) | 1998 | |||
| Grace Church of Marin | Religion-related | 501(c)(3) | 1974 | |||
| Guardian of the Four Corners Foundation | 501(c)(3) | 1981 | ||||
| Health 2 0 Advocates Inc | Medical research | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Henry W Sabin Zeta Psi Scholarship | Education | 501(c)(3) | 1958 | $187,140 | 2025-12 | |
| Hodari Scholars Foundation | Education | 501(c)(3) | 2007 | $0 | $0 | 2026-06 |
| Im Kinder Than That | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Jad Experience | Arts, culture and humanities | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Just Armour | Religion-related | 501(c)(3) | 2024 | |||
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-06 | |
| M R Finley Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $729,110 | 2025-12 | |
| Marin Council of Parent Participation Pre-School | 501(c)(4) | 1974 | $0 | $0 | 2025-06 | |
| Marin Orchid Society | Environment | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Marin Professional Womens Network | Community improvement and capacity building | 501(c)(6) | 2013 | $0 | $0 | 2024-12 |
| Marin Sangha | Religion-related | 501(c)(3) | 2014 | |||
| Networking Entrepreneurial Women of Marin | Community improvement and capacity building | 501(c)(6) | 2010 | $0 | $0 | 2025-12 |
| New Equations Foundation | Social science | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Oakbrook Ca | Housing and shelter | 501(c)(3) | 2025 | |||
| Partners for Global Health Initiatives | Health care | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Pied Piper Foundation | 501(c)(3) | 2021 | $3.8 million | 2025-12 | ||
| Project Oscar Inc | 501(c)(3) | 1966 | $0 | $0 | 2023-12 | |
| Reaching Beyond Globally | Education | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Ross Valley Firefighters Club Inc | 501(c)(4) | 1997 | $0 | $0 | 2025-12 | |
| San Anselmo Community Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| San Anselmo Historical Society | Arts, culture and humanities | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| San Domenico School Foundation | 501(c)(3) | 1946 | ||||
| San Francisco Live Arts | Arts, culture and humanities | 501(c)(3) | 1992 | $0 | $0 | 2025-12 |
| Seedlingo Organization | Education | 501(c)(3) | 2026 | |||
| Sleepy Hollow Tennis Club | Recreation and sports | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Smile High Collective | Recreation and sports | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Society for Preservation & Encourmt of Barbershop Quartet Singing Amer | 501(c)(3) | 1946 | $0 | $0 | 2025-12 | |
| Solution Foundation | Health care | 501(c)(3) | 2004 | $146,481 | 2025-12 | |
| St Nicholas of Myra Orthodox Church | 501(c)(3) | 1972 | ||||
| The Ev Alliance Inc | Science and technology | 501(c)(3) | 2015 | $0 | $0 | 2025-06 |
| The Friendly Fish Project | Environment | 501(c)(3) | 2026 | |||
| The Global Education and Action Network | International, foreign affairs and national security | 501(c)(3) | 2001 | $0 | $0 | 2026-05 |
| The Lloyd Symington Foundation Inc | 501(c)(3) | 1986 | $414,662 | 2024-10 | ||
| Valentines Ball Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | |||
| Venetia Valley School Foundation | Education | 501(c)(3) | 2017 | $0 | $0 | 2023-12 |
| Veterans Rehoming Help Inc | Public and societal benefit | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Well Day Foundation | Health care | 501(c)(3) | 2026 | |||
| Wings of Beauty Inc | Arts, culture and humanities | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Superorganism | Environment | 501(c)(3) | 2011 | $-1,240 | $330 | 2025-12 |
By cause in San Anselmo, CA
- Education 16
- Arts, culture and humanities 11
- Philanthropy, voluntarism and grantmaking foundations 8
- Environment 7
- Religion-related 7
- Community improvement and capacity building 5
- Recreation and sports 5
- Mental health and crisis intervention 3
- Health care 3
Nonprofits in every city of the state
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.