Data / Nonprofits / Connecticut / Old Saybrook
Nonprofits in Old Saybrook, CT: 97 registered with the IRS
97 nonprofits are registered with the IRS in Old Saybrook, CT, 70 of them 501(c)(3) charities; the 31 that report revenue took in $15.8 million. The largest by revenue: The Katharine Hepburn Cultural Arts Center Inc ($4.7 million), Estuary Council of Seniors Inc ($2.2 million), Connecticut Cancer Foundation Inc ($2.1 million). Most common causes: education (10), philanthropy, voluntarism and grantmaking foundations (8), human services (6).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| The Katharine Hepburn Cultural Arts Center Inc | Arts, culture and humanities | 501(c)(3) | 2008 | $4.7 million | $5 million | 2025-06 |
| Estuary Council of Seniors Inc | Human services | 501(c)(3) | 1975 | $2.2 million | $3.8 million | 2025-09 |
| Connecticut Cancer Foundation Inc | 501(c)(3) | 1989 | $2.1 million | $12.5 million | 2025-06 | |
| Childrens Tree Montessori Inc | Education | 501(c)(3) | 2016 | $1.4 million | $1.5 million | 2025-08 |
| Old Saybrook Ambulance Association Inc | Health care | 501(c)(3) | 2007 | $940,943 | $4 million | 2025-04 |
| Old Saybrook Senior Housing Incorporated | 501(c)(3) | 1979 | $815,790 | $2.2 million | 2025-06 | |
| Old Saybrook Chamber of Commerce Incorporated | 501(c)(6) | 1968 | $394,716 | $283,528 | 2024-12 | |
| Elderly Housing Development Corp of Old Saybrook | Housing and shelter | 501(c)(3) | 1987 | $354,705 | $3.6 million | 2025-06 |
| Carley Cunniff Peter S Dixon MD Foundation | Education | 501(c)(3) | 2007 | $335,019 | $2.9 million | 2024-12 |
| Glorian Publishing Inc | Religion-related | 501(c)(3) | 2006 | $270,270 | $292,839 | 2025-06 |
| Connecticut Operators of School Transportation Association | 501(c)(6) | 1983 | $265,788 | $438,688 | 2025-06 | |
| Old Saybrook Historical Society Inc | 501(c)(3) | 1973 | $213,554 | $2.6 million | 2025-09 | |
| Connecticut Package Stores Association Inc | 501(c)(6) | 1983 | $203,299 | $304,390 | 2024-12 | |
| North Cove Yacht Club Inc | 501(c)(7) | 1971 | $202,862 | $462,874 | 2025-12 | |
| Old Saybrook Rotary Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $154,450 | $801,660 | 2026-06 |
| Connecticut Psychological | 501(c)(6) | 1976 | $152,791 | $205,375 | 2024-12 | |
| Old Saybrook Fire Company No 1 Inc | 501(c)(3) | 1980 | $142,654 | $1.2 million | 2025-06 | |
| Connecticut Lodging Association Inc | Community improvement and capacity building | 501(c)(6) | 1974 | $119,125 | $134,865 | 2025-09 |
| Life of Giving Charity | Human services | 501(c)(3) | 2022 | $100,000 | $123,263 | 2025-12 |
| Chestnut Hill Concerts Inc | Arts, culture and humanities | 501(c)(3) | 1970 | $95,906 | $87,162 | 2024-12 |
| Old Saybrook Land Trust Inc | Environment | 501(c)(3) | 1997 | $73,834 | $1.7 million | 2025-12 |
| Yale Club of Boston | Education | 501(c)(3) | 2016 | $65,738 | $84,851 | 2025-06 |
| Old Saybrook Riverside Cemetery Association Incorporated | Mutual and membership benefit | 501(c)(13) | 2000 | $60,915 | $325,897 | 2024-12 |
| Connecticut Tourism Coalition Inc | Human services | 501(c)(4) | 2018 | $57,917 | $15,637 | 2025-12 |
| American Legion | 501(c)(19) | 1946 | $51,955 | $23,229 | 2025-12 | |
| International Executive Resources Group Inc | International, foreign affairs and national security | 501(c)(6) | 2003 | $51,528 | $41,142 | 2025-12 |
| New Haven Railroad Historical & Technical Association Incorporated | 501(c)(3) | 1976 | $46,376 | $481,324 | 2024-12 | |
| Aauw Lower Connecticut Valley Education and Scholarship Program | Education | 501(c)(3) | 2023 | $46,034 | $78,740 | 2026-06 |
| Kate Foundation for Rett Syndrome Research Inc | Medical research | 501(c)(3) | 2010 | $26,368 | $26,538 | 2024-12 |
| Tears From Heaven | Public and societal benefit | 501(c)(3) | 2023 | $2,070 | $10,972 | 2025-12 |
| Patriot Guard Riders of CT Inc | Human services | 501(c)(3) | 2009 | $1,895 | $6,697 | 2025-12 |
| A Sacred Place Inc | Religion-related | 501(c)(3) | 2003 | $0 | $0 | 2025-08 |
| Access Navigation Inc | Mental health and crisis intervention | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Acton Public Library Foundation | Education | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| All Souls Prayer Chapel Ministries of Old Saybrook | Religion-related | 501(c)(3) | 1995 | |||
| American Association of University Women | Education | 501(c)(4) | 2010 | $0 | $0 | 2025-06 |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2024-12 | |
| Ancient Free & Accepted Masons of Connecticut | 501(c)(10) | 1943 | $0 | $0 | 2025-11 | |
| Bahais of Old Saybrook Town | 501(c)(3) | 1995 | ||||
| Bulkeley High School Athletic Hall of Fame Corporation | 501(c)(3) | 2021 | $0 | $0 | 2026-05 | |
| Church of Glorian Inc | Religion-related | 501(c)(3) | 2020 | |||
| Colossus Project Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Columbiettes Incorporated | 501(c)(10) | 1977 | $0 | $0 | 2026-08 | |
| Common Good Gardens Inc | Food, agriculture and nutrition | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Connecticut Bus Association | 501(c)(6) | 1970 | $0 | $0 | 2025-09 | |
| Connecticut Clean Waterways Project Inc | Environment | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Connecticut Education Association | 501(c)(5) | 1971 | $0 | $0 | 2025-06 | |
| Connecticut Psychological Foundation Inc | Community improvement and capacity building | 501(c)(3) | 2003 | $0 | $0 | 2024-12 |
| Connecticut Small Brand Council | Recreation and sports | 501(c)(6) | 2013 | $0 | $0 | 2025-12 |
| Cypress Cemetary Association Inc | 501(c)(13) | 1984 | $0 | $0 | 2025-12 | |
| Daniel J Rinaldi Foundation | Mental health and crisis intervention | 501(c)(3) | 2026 | |||
| David O Donnell Scholarship | Arts, culture and humanities | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Eastgate Outreach Inc | Youth development | 501(c)(3) | 2018 | $1 | 2025-12 | |
| Emily Harvey Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $2.2 million | 2024-12 | |
| Emmanuel Baptist Church | Religion-related | 501(c)(3) | 2006 | 2010-12 | ||
| Federated Garden Clubs of Connecticut Inc | 501(c)(3) | 1967 | $0 | $0 | 2025-08 | |
| Fenwick Yacht Club Inc | Recreation and sports | 501(c)(7) | 2009 | $0 | $0 | 2025-09 |
| For Corvettes Only Inc | Recreation and sports | 501(c)(7) | 2007 | $0 | $0 | 2025-10 |
| Friends of North Cove | Environment | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Friends of the Acton Library | 501(c)(3) | 1981 | $0 | $0 | 2025-12 | |
| Graduation Night Inc | Education | 501(c)(3) | 2000 | $0 | $0 | 2024-12 |
| Infinite Possibilities CT | Human services | 501(c)(3) | 2023 | $0 | $4,407 | 2024-12 |
| International Association of Lions Clubs | 501(c)(4) | 1940 | $0 | $0 | 2026-06 | |
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 | |
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 | |
| Little League Baseball Inc | 501(c)(3) | 1967 | $0 | $0 | 2025-09 | |
| Lynde Point Land Trust Inc | Community improvement and capacity building | 501(c)(3) | 1991 | $0 | $0 | 2025-06 |
| M A T S Foundation Inc | Human services | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| MSW Football Club Inc | Youth development | 501(c)(3) | 2016 | $0 | $0 | 2026-06 |
| Maritime Education Network | Education | 501(c)(3) | 2000 | $0 | $0 | 2025-06 |
| Morrow Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $37,057 | 2025-12 | |
| My Transgender Nation Inc | Public and societal benefit | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Newstead Foundation | 501(c)(3) | 1964 | $1.4 million | 2025-12 | ||
| Old Saybrook Basketball Club Inc | Recreation and sports | 501(c)(3) | 2018 | $0 | $0 | 2026-06 |
| Old Saybrook Chamber Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Old Saybrook Coastal Resilience Coalition Inc | Environment | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Old Saybrook Education Foundation Inc | Education | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Old Saybrook High School Ram Boosters Athletic Club Inc | Recreation and sports | 501(c)(3) | 2017 | $0 | $0 | 2025-06 |
| Old Saybrook Lions Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2020 | $0 | $0 | 2026-06 |
| Old Saybrook Middle School Parent Teacher Organization | Education | 501(c)(3) | 2017 | $0 | $0 | 2025-07 |
| Old Saybrook Youth Football Activities League Inc | Recreation and sports | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Otter Cove Association Inc | 501(c)(4) | 1966 | $0 | $0 | 2025-06 | |
| Pattaconk Fish & Game Club | 501(c)(7) | 1997 | $0 | $0 | 2025-12 | |
| Prevailing Light Ministries Inc | 501(c)(3) | 1983 | ||||
| Ptsa Connecticut Congress | 501(c)(3) | 1955 | $0 | $0 | 2025-06 | |
| Rotary International | 501(c)(4) | 2022 | $0 | $0 | 2026-06 | |
| Saybrook Community Church | 501(c)(3) | 1964 | 2016-12 | |||
| Sci Joint Alliance Inc | Housing and shelter | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Service Member Financial Readiness Network Inc | Public and societal benefit | 501(c)(3) | 2026 | |||
| Shoreline Church Inc | Religion-related | 501(c)(3) | 2003 | |||
| Susan Elaine Foundation Inc | Environment | 501(c)(3) | 2021 | $1.1 million | 2025-12 | |
| Tibetan American Community of Connecticut Inc | Arts, culture and humanities | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Tidewater Institute | Environment | 501(c)(3) | 2007 | $0 | $0 | 2025-06 |
| Tom & Claire Oneil Foundation | 501(c)(3) | 1957 | $542,829 | 2023-12 | ||
| VFW Auxiliary Department of Connecticut Inc | Public and societal benefit | 501(c)(19) | 2009 | $0 | $0 | 2026-06 |
| Wayne Eisenbaum Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $120,750 | 2025-12 | |
| Webster Family Foundation Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $109,591 | 2025-12 |
By cause in Old Saybrook, CT
- Education 10
- Philanthropy, voluntarism and grantmaking foundations 8
- Human services 6
- Religion-related 6
- Environment 6
- Recreation and sports 6
- Arts, culture and humanities 4
- Public and societal benefit 4
- 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.