Data / Nonprofits / California / Ross
Nonprofits in Ross, CA: 51 registered with the IRS
51 nonprofits are registered with the IRS in Ross, CA, 47 of them 501(c)(3) charities; the 23 that report revenue took in $69.1 million. The largest by revenue: The Branson School ($36.7 million), Cedars of Marin ($15.2 million), Oceanic Society Expeditions ($4.9 million). Most common causes: philanthropy, voluntarism and grantmaking foundations (11), education (6), arts, culture and humanities (4).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| The Branson School | Education | 501(c)(3) | 1948 | $36.7 million | $108.5 million | 2025-06 |
| Cedars of Marin | 501(c)(3) | 1966 | $15.2 million | $33.7 million | 2025-09 | |
| Oceanic Society Expeditions | 501(c)(3) | 1990 | $4.9 million | $3.5 million | 2025-06 | |
| Marin Art and Garden Center | Environment | 501(c)(3) | 1948 | $4 million | $8.2 million | 2025-12 |
| Ross School Foundation | Education | 501(c)(3) | 1982 | $1.8 million | $2.1 million | 2025-06 |
| Lagunitas Country Club | 501(c)(7) | 1942 | $1.7 million | $1.8 million | 2024-12 | |
| San Francisco International School | Education | 501(c)(3) | 2014 | $1.3 million | $1.9 million | 2025-06 |
| Ross School Parent Teacher Organization | Education | 501(c)(3) | 2016 | $547,320 | $259,177 | 2025-06 |
| Ross Valley Players | Arts, culture and humanities | 501(c)(3) | 1981 | $487,549 | $807,716 | 2025-06 |
| Zeta Psi Fraternity of North America | 501(c)(7) | 1941 | $471,182 | $937,317 | 2024-06 | |
| Karma Club Teen | Youth development | 501(c)(3) | 2024 | $349,268 | $160,623 | 2025-12 |
| Sustainable Marin | Environment | 501(c)(3) | 1999 | $348,765 | $308,766 | 2025-12 |
| Marin Handicapped Housing No 5 | 501(c)(3) | 1991 | $288,523 | $625,221 | 2025-09 | |
| Ross Valley Lacrosse Club | Youth development | 501(c)(3) | 2019 | $240,743 | $259,580 | 2025-07 |
| Town of Ross Property Owners Association | Community improvement and capacity building | 501(c)(3) | 2007 | $116,374 | $49,410 | 2025-12 |
| Pixie Parents | 501(c)(3) | 1959 | $94,631 | $568,165 | 2024-12 | |
| Marin Music Chest | 501(c)(3) | 1956 | $92,061 | $532,162 | 2025-12 | |
| Marin Garden Club | Environment | 501(c)(3) | 2017 | $67,854 | $162,816 | 2026-06 |
| Dante House Inc | Housing and shelter | 501(c)(3) | 1999 | $65,852 | $419,506 | 2025-09 |
| Marin Cricket Club | Recreation and sports | 501(c)(7) | 2018 | $64,039 | $31,990 | 2025-12 |
| Lamont House Inc | Housing and shelter | 501(c)(3) | 1998 | $61,032 | $343,788 | 2025-09 |
| Follow Your Dream Foundation Inc | Arts, culture and humanities | 501(c)(3) | 2009 | $58,496 | $6,849 | 2024-12 |
| 2722 Bancroft Foundation | Education | 501(c)(3) | 2019 | $34,101 | 2024-12 | |
| Amini Foundation for the Study of Affects | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2001 | $876,811 | 2025-01 | |
| Callison Foundation | 501(c)(3) | 1966 | $9.4 million | 2024-12 | ||
| Champion Youth Africa | Recreation and sports | 501(c)(3) | 2025 | |||
| Chords for Change Inc | Arts, culture and humanities | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Elizabeth R & William J Patterson Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2003 | $49 million | 2024-12 | |
| Evergreen Childrens Academy | Education | 501(c)(3) | 2026 | |||
| FR Wankar Education and Rural Support Fund Inc | Community improvement and capacity building | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Gruber Family Foundation | 501(c)(3) | 1987 | $75.4 million | 2025-12 | ||
| Jose Moya Del Pino Library Ross Historical Society | 501(c)(3) | 1983 | $0 | $0 | 2025-12 | |
| Leathers Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $3.3 million | 2025-12 | |
| Lenore and Frank Heffernan Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2012 | $371,204 | 2024-12 | |
| Marin City Childrens Program | 501(c)(3) | 1997 | $28,687 | 2023-05 | ||
| McBurney Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $2.9 million | 2025-12 | |
| Nasaw Family Foundation Irrv Charitable Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $10,252 | 2025-12 | |
| Project 1 Life Inc | Mental health and crisis intervention | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Rivinus Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $884,792 | 2024-12 | |
| Rohde Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $4.1 million | 2024-12 | |
| Ross Police Officers Association | Human services | 501(c)(3) | 2009 | $0 | $43,897 | 2025-07 |
| Rotary Central Marin Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $0 | $0 | 2025-06 |
| Rotary International | 501(c)(4) | 1942 | $0 | $0 | 2026-06 | |
| Scially Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $6,644 | 2024-12 | |
| Siebel Family Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $568,345 | 2025-12 | |
| Sosnick Chess | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Sound Orchard | Arts, culture and humanities | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| St Johns Episcopal Church Ross | 501(c)(3) | 1976 | ||||
| Tamalpais Conservation Club | 501(c)(3) | 1951 | $0 | $0 | 2026-04 | |
| U S Naval Sea Cadet Corps Pyro Divi | Youth development | 501(c)(3) | 2000 | $0 | $0 | 2024-12 |
| 2722 Bancroft Educational Institute Inc | 501(c)(3) | 1993 | $-2,034 | $815,122 | 2023-12 |
By cause in Ross, CA
- Philanthropy, voluntarism and grantmaking foundations 11
- Education 6
- Arts, culture and humanities 4
- Recreation and sports 3
- Youth development 3
- Environment 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.