Data / Nonprofits / Connecticut / Old Greenwich
Nonprofits in Old Greenwich, CT: 101 registered with the IRS
101 nonprofits are registered with the IRS in Old Greenwich, CT, 95 of them 501(c)(3) charities; the 29 that report revenue took in $138.2 million. The largest by revenue: Ithuriel Fund ($102.3 million), Innis Arden Golf Club Inc ($17.9 million), Greenwich Town Party Inc ($5.7 million). Most common causes: philanthropy, voluntarism and grantmaking foundations (26), education (11), arts, culture and humanities (8).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Ithuriel Fund | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $102.3 million | $246.6 million | 2025-12 |
| Innis Arden Golf Club Inc | 501(c)(7) | 1972 | $17.9 million | $54.9 million | 2024-12 | |
| Greenwich Town Party Inc | Community improvement and capacity building | 501(c)(3) | 2012 | $5.7 million | $1.7 million | 2025-06 |
| Old Greenwich-Riverside Community Center Inc | Recreation and sports | 501(c)(3) | 1959 | $3.2 million | $2.6 million | 2024-12 |
| Global Lyme Alliance Inc | Health care | 501(c)(3) | 1999 | $2.4 million | $3.3 million | 2024-12 |
| Perrot Memorial Library Association of Old Greenwich Incorporated | Education | 501(c)(3) | 1950 | $1.9 million | $7.6 million | 2024-06 |
| Rocky Point Club Inc | 501(c)(7) | 1961 | $1.6 million | $3.2 million | 2025-10 | |
| Ptsa Connecticut Congress | 501(c)(3) | 1945 | $535,028 | $476,451 | 2026-06 | |
| Life Spring Network | Religion-related | 501(c)(3) | 2006 | $402,000 | $569,486 | 2024-12 |
| Old Greenwich Yacht Club Incorporated | 501(c)(7) | 1976 | $302,202 | $214,937 | 2025-12 | |
| Sound Beach Volunteer Services Foundation Inc | 501(c)(3) | 1982 | $266,865 | $2.4 million | 2025-06 | |
| Greenwich Point Conservancy Inc | Environment | 501(c)(3) | 2024 | $233,590 | $1.3 million | 2025-12 |
| Sound Beach Volunteer Fire Department Inc | Public safety, disaster preparedness and relief | 501(c)(4) | 2018 | $194,827 | $107,042 | 2025-04 |
| James C Cabrera Memorialscholarship Fund | Education | 501(c)(3) | 2006 | $190,294 | $208,492 | 2025-12 |
| National Society of the Sons of the American Revolution | 501(c)(3) | 1944 | $146,803 | $1.3 million | 2025-12 | |
| Pitch Your Peers Inc | Human services | 501(c)(3) | 2020 | $143,250 | $3,323 | 2024-12 |
| Tandem Fund Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $139,204 | $41,005 | 2025-12 |
| Old Timers Athletic Association of Greenwich Connecticut Inc | Education | 501(c)(3) | 1969 | $116,344 | $336,189 | 2025-12 |
| Friends of Greenwich Point | Religion-related | 501(c)(3) | 1990 | $106,461 | $865,664 | 2025-08 |
| The Achievement Fund Inc | Education | 501(c)(3) | 2018 | $75,391 | $3.2 million | 2025-12 |
| Cardinal Rugby Club Inc | Recreation and sports | 501(c)(3) | 2014 | $62,723 | $30,055 | 2025-12 |
| Putnam General Football Inc | Arts, culture and humanities | 501(c)(3) | 2000 | $62,670 | $11,251 | 2025-12 |
| North Mianus Bulldogs Inc | Recreation and sports | 501(c)(3) | 2004 | $45,492 | $45,444 | 2025-12 |
| Weevster 18 Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $41,769 | $1,608 | 2025-12 |
| Old Greenwich Merchants Inc | Community improvement and capacity building | 501(c)(6) | 2025 | $30,502 | $12,737 | 2023-12 |
| Nursing Education Alumni Association Inc | Education | 501(c)(3) | 1998 | $25,796 | $124,131 | 2025-07 |
| Oratory of the Little Way Incorporated | 501(c)(3) | 1966 | $6,442 | $269,404 | 2025-12 | |
| Friends of Binney Park | Recreation and sports | 501(c)(3) | 2024 | $2,250 | $15,199 | 2025-12 |
| Through the Eyes of Children Inc | Youth development | 501(c)(3) | 2020 | $1,683 | $30,943 | 2025-12 |
| A Start in the Performing Arts | Arts, culture and humanities | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Art06870 Inc | Arts, culture and humanities | 501(c)(3) | 2026 | |||
| Asher Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $248,600 | 2025-12 | |
| Autism Education Alliance | Diseases, disorders and medical disciplines | 501(c)(3) | 2022 | $12.8 million | 2024-12 | |
| Baddies Beating Cancer Inc | Health care | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Blitzer Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $5.2 million | 2024-12 | |
| Books & Ball Inc | Education | 501(c)(3) | 2024 | $0 | $1 | 2020-12 |
| Booth Residence Inc | Housing and shelter | 501(c)(3) | 1979 | $0 | $0 | 2025-09 |
| Bridgets Brigade Inc | Human services | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Bryan C Cary Statutory Trust Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $809,520 | 2024-12 | |
| Cans for Care Inc | Food, agriculture and nutrition | 501(c)(3) | 2026 | |||
| Center for Art and Earth Inc | Arts, culture and humanities | 501(c)(3) | 1995 | $1 | 2024-12 | |
| Children of Fallen Patriots Foundat Ion - Greenwich Region | Public and societal benefit | 501(c)(3) | 2026 | |||
| Connecticut Ceramics Study Circle | Arts, culture and humanities | 501(c)(3) | 1990 | $0 | $0 | 2024-12 |
| Costa Bravo Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| Costa Doro Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2020 | $2 million | 2024-12 | |
| Crescent Foundation of Connecticut Inc | Religion-related | 501(c)(3) | 2020 | |||
| Driscoll Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2019 | $3.4 million | 2025-12 | |
| E J Schmeltz Scholarship Fund | Education | 501(c)(3) | 2005 | $107,076 | 2024-12 | |
| East Side Burying Ground Association of Woodbridge Inc | Mutual and membership benefit | 501(c)(13) | 2015 | $0 | $0 | 2024-12 |
| Edgewater Church Corp | Religion-related | 501(c)(3) | 2019 | |||
| Every Five Minutes | Diseases, disorders and medical disciplines | 501(c)(3) | 2025 | |||
| Friends of Thandanani Foundation | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| GHS Girls Soccer | Education | 501(c)(3) | 2021 | $0 | $0 | 2025-11 |
| GK Church Inc | Religion-related | 501(c)(3) | 2018 | |||
| Grace Notes Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $0 | $0 | 2025-04 |
| Greenwich Rugby Club Company | Recreation and sports | 501(c)(3) | 2025 | |||
| Greenwich Student Loan Fund Inc | 501(c)(3) | 1955 | $0 | $132,599 | 2024-12 | |
| Haimes Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $143,840 | 2024-12 | |
| I Am Wild Foundation Inc | Animal-related | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Ifs Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $6.9 million | 2025-12 | |
| Infectious Diseases Society of New York Inc | Medical research | 501(c)(3) | 1995 | $0 | $0 | 2025-08 |
| JJJ Family Foundation | 501(c)(3) | 1987 | $578,942 | 2025-12 | ||
| Jams Learning Foundation Inc | Education | 501(c)(3) | 2026 | |||
| Jewish Riverside Old Greenwich Inc | Religion-related | 501(c)(3) | 2024 | |||
| Julius Fam Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $19,739 | 2025-12 | |
| Karin Bain and John Kukral Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $84.6 million | 2025-12 | |
| Kids Cancer Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Kids Know Best Inc | Public and societal benefit | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Ligado Society | Education | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Lions Club Foundation of Greenwich Inc | 501(c)(3) | 1955 | $0 | $0 | 2025-12 | |
| MHG Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $3.8 million | 2024-12 | |
| Maasai Honey Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 | |
| Mike Delaney Foundation | 501(c)(3) | 1989 | $123,342 | 2025-05 | ||
| Miller Charitable Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $1 | 2025-12 | |
| National Spiritualist Association of Churches | 501(c)(3) | 1947 | ||||
| Old Greenwich Association | Community improvement and capacity building | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Old Greenwich Riverside North Mianus Preservation Association | Arts, culture and humanities | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Pacs1 Syndrome Research Foundation | Diseases, disorders and medical disciplines | 501(c)(3) | 2018 | $353,606 | 2024-12 | |
| Peace Community Chapel Inc | Religion-related | 501(c)(3) | 2015 | |||
| Penn Oberlander Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $3.8 million | 2025-12 | |
| Presbyterian Church of Old Greenwich Inc | 501(c)(3) | 2013 | 2013-12 | |||
| Ravengate Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $1.1 million | 2025-11 | |
| Robert and Dale Rosen Charitable Foundation Trust Ua 08-05-92 | 501(c)(3) | 1993 | $165,742 | 2024-12 | ||
| Ruth Angeline Whitley Memorialfoundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $97,857 | 2025-12 | |
| Saint Saviors Episcopal Church | 501(c)(3) | 1940 | ||||
| Samstone Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $1.4 million | 2025-12 | |
| Seaside Society | Youth development | 501(c)(3) | 2026 | |||
| Shamana Giving Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $1,201 | 2025-12 | |
| Small World Initiative Inc | Science and technology | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Sound Beach Community Band Inc | Arts, culture and humanities | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Spidacares Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $405,289 | 2024-12 | |
| The Gibbons Foundation | 501(c)(3) | 1988 | $871,156 | 2025-12 | ||
| The Innis Arden Golf Club Scholarship Foundation | Education | 501(c)(3) | 2026 | |||
| The Laverack Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2003 | $10.3 million | 2025-11 | |
| The Phffoundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2001 | $15 million | 2025-12 | |
| Tikkun Olam Steinberg Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2013 | $5.9 million | 2025-12 | |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2025-12 | |
| Vick Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $1.6 million | 2024-12 | |
| Waste Free Greenwich Inc | Environment | 501(c)(3) | 2023 | $0 | $0 | 2025-06 |
| Worldquant Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $22.3 million | 2024-12 | |
| Zia Charitable Foundation | Human services | 501(c)(3) | 2016 | $5.4 million | 2025-12 |
By cause in Old Greenwich, CT
- Philanthropy, voluntarism and grantmaking foundations 26
- Education 11
- Arts, culture and humanities 8
- Religion-related 7
- Recreation and sports 6
- Diseases, disorders and medical disciplines 4
- Human services 3
- Community improvement and capacity building 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.