Data / Nonprofits / Connecticut / Groton
Nonprofits in Groton, CT: 161 registered with the IRS
161 nonprofits are registered with the IRS in Groton, CT, 121 of them 501(c)(3) charities; the 51 that report revenue took in $62.2 million. The largest by revenue: Odd Fellows Home of Connecticut Inc ($19.3 million), Noank Community Support Services Inc ($6.6 million), Seabird Enterprises Inc ($6.5 million). Most common causes: education (17), arts, culture and humanities (13), religion-related (12).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Odd Fellows Home of Connecticut Inc | 501(c)(3) | 2005 | $19.3 million | $44.1 million | 2025-09 | |
| Noank Community Support Services Inc | Human services | 501(c)(3) | 1972 | $6.6 million | $3.9 million | 2025-06 |
| Seabird Enterprises Inc | Human services | 501(c)(3) | 1988 | $6.5 million | $3.8 million | 2025-06 |
| Southeastern Connecticut Enterprise Region Corporation | 501(c)(3) | 1989 | $3.3 million | $9.8 million | 2025-06 | |
| International Union United Auto Aerospace & Agricultural Workers | 501(c)(5) | 1961 | $3.2 million | $2.7 million | 2025-12 | |
| Groton Ambulance Assoc Inc | Health care | 501(c)(3) | 1993 | $2.9 million | $894,524 | 2025-04 |
| Riverfront Childrens Center Inc | Human services | 501(c)(3) | 1942 | $2.1 million | $2.8 million | 2025-06 |
| Informing Democracy Education Fund | Civil rights, social action and advocacy | 501(c)(3) | 2023 | $2 million | $19,515 | 2025-06 |
| Electric Boat Employees Community Service Association | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1958 | $1.8 million | $39,816 | 2025-12 |
| Shennecossett Yacht Club Incorporated | 501(c)(7) | 1974 | $1.8 million | $4.8 million | 2025-12 | |
| Inter District Committee for Project Oceanology | Science and technology | 501(c)(3) | 1974 | $1.5 million | $1.9 million | 2025-06 |
| FHM Services Inc | Crime and legal-related | 501(c)(3) | 1997 | $1 million | $95,449 | 2025-06 |
| International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi | 501(c)(5) | 1954 | $946,773 | $1.8 million | 2026-06 | |
| Ahepa 250-III Inc | Housing and shelter | 501(c)(3) | 1995 | $685,734 | $1.9 million | 2025-06 |
| U S Submarine Veterans Charitable Foundation Inc | Education | 501(c)(3) | 2000 | $633,103 | $1.4 million | 2025-12 |
| Laborers International Union of North Amercia | 501(c)(5) | 1940 | $598,753 | $1.1 million | 2025-12 | |
| Submarine Force Library & Museum Assoc | Arts, culture and humanities | 501(c)(3) | 1973 | $595,500 | $4.3 million | 2025-12 |
| Groton Long Point Yacht Club | 501(c)(7) | 1983 | $588,310 | $391,266 | 2025-09 | |
| Electric Boat Management Association | 501(c)(6) | 1982 | $535,084 | $244,316 | 2024-12 | |
| Bill Memorial Library | Education | 501(c)(3) | 1943 | $533,491 | $4.8 million | 2025-06 |
| International Association of Machinists & Aerospace Workers | 501(c)(5) | 1940 | $406,574 | $285,297 | 2024-12 | |
| Connecticut United for Research Excellence Inc | Medical research | 501(c)(3) | 1991 | $344,203 | $580,574 | 2024-12 |
| Thames River Heritage Park Foundation Inc | Recreation and sports | 501(c)(3) | 2016 | $336,266 | $41,707 | 2024-12 |
| Uss Groton Sail Foundation | Arts, culture and humanities | 501(c)(3) | 2016 | $333,907 | $680,471 | 2024-12 |
| Southeastern Connecticut Television | Arts, culture and humanities | 501(c)(3) | 2006 | $312,952 | $320,430 | 2025-12 |
| Connecticut Wind Collaborative Inc | Environment | 501(c)(3) | 2025 | $304,851 | $433,580 | 2024-12 |
| Benevolent & Protective Order of Elks of the USA | 501(c)(8) | 1951 | $274,465 | $775,354 | 2025-03 | |
| Avery-Copp Museum Inc | Arts, culture and humanities | 501(c)(3) | 2007 | $260,953 | $3.7 million | 2024-12 |
| International Brotherhood of Electrical Workers | 501(c)(5) | 1940 | $259,690 | $43,922 | 2025-12 | |
| Community Speaks Out Inc | Mental health and crisis intervention | 501(c)(3) | 2016 | $246,071 | $528,813 | 2025-12 |
| Cure Innovations LLC | Youth development | 501(c)(3) | 2015 | $226,991 | $4.4 million | 2024-12 |
| Steps Inc | Human services | 501(c)(3) | 2009 | $201,032 | $55,477 | 2025-08 |
| United Brotherhood of Carpenters & Joiners of America | 501(c)(5) | 1940 | $184,975 | $194,364 | 2025-06 | |
| Office and Professional Employees International Union | 501(c)(5) | 1946 | $175,662 | $446,525 | 2025-12 | |
| Legacy A Residential Recovery Program for Women | Human services | 501(c)(3) | 2021 | $174,311 | $110,746 | 2025-12 |
| Groton Open Space Association Inc | Environment | 501(c)(3) | 1997 | $150,404 | $7.1 million | 2025-12 |
| Starr Burying Ground Association | Mutual and membership benefit | 501(c)(13) | 1947 | $124,457 | $2.3 million | 2024-12 |
| American Federation of Labor & Congress of Industrial Orgs | 501(c)(5) | 1978 | $107,679 | $144,143 | 2025-12 | |
| Odd Fellows Faith Hope and Charity Fund Inc | Human services | 501(c)(3) | 2008 | $105,016 | $3.8 million | 2025-09 |
| Heart Warrior Achievement Scholarship Inc | Education | 501(c)(3) | 2023 | $102,636 | $42,446 | 2025-12 |
| Groton Mystic Falcons Youth Football League Inc | Recreation and sports | 501(c)(3) | 2023 | $81,877 | $41,044 | 2024-12 |
| The Groton Soccer Club Inc | Recreation and sports | 501(c)(3) | 2023 | $80,837 | $46,044 | 2025-12 |
| Southeastern CT Robotics Inc | Education | 501(c)(3) | 2020 | $76,998 | $39,568 | 2025-12 |
| Animal Welfare League of New London County Incorporated | 501(c)(3) | 1967 | $56,046 | $431,922 | 2025-12 | |
| Little League Baseball Inc | 501(c)(3) | 1967 | $53,670 | $179,283 | 2023-09 | |
| Aluminum Falcon Robotics | Education | 501(c)(3) | 2014 | $45,856 | $10,186 | 2025-08 |
| Groton Scholarship Fund Inc | 501(c)(3) | 1953 | $36,123 | $627,658 | 2025-12 | |
| Doncasters Inc Retiree Veba Trust | Mutual and membership benefit | 501(c)(9) | 2018 | $30,642 | $1.8 million | 2025-06 |
| Avery Memorial Association | Arts, culture and humanities | 501(c)(3) | 2008 | $22,367 | $252,296 | 2025-06 |
| Odd Fellows Healthcare Inc | Human services | 501(c)(3) | 2008 | $18,000 | $184,213 | 2025-09 |
| American Federation of Government Empoyees Local 2105 | Employment | 501(c)(5) | 2023 | $8,574 | $81,279 | 2025-12 |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2024-12 | |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2025-12 | |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2024-12 | |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2025-12 | |
| American Federation of State County & Municipal Employees | 501(c)(5) | 1957 | $0 | $0 | 2025-12 | |
| American Federation of State County & Municiple Employees | Employment | 501(c)(5) | 1957 | $0 | $0 | 2024-12 |
| Association of Civilian Technicians Inc | Employment | 501(c)(5) | 2003 | $0 | $0 | 2025-12 |
| Babies Heart Run Inc | Health care | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Beech Brook Farm | Animal-related | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Big Red Memorial Fund Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Bonnell Cove Foundation | 501(c)(3) | 1990 | $1.7 million | 2025-12 | ||
| Branch 20 Fleet Reserve Association | Public and societal benefit | 501(c)(13) | 2010 | $0 | $0 | 2025-12 |
| Chelsea Foundation Inc | 501(c)(3) | 1990 | $0 | $0 | 2025-06 | |
| Chelsea Groton Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $10.4 million | 2025-12 | |
| Christ Church of God & Family Center Inc | Religion-related | 501(c)(3) | 2003 | |||
| Christian Youth Theater Connecticut Inc | Religion-related | 501(c)(3) | 2026 | |||
| Church of Christ in Groton | 501(c)(3) | 1974 | ||||
| City of Groton Local 1964 I A F F | Employment | 501(c)(5) | 2019 | $0 | $0 | 2026-03 |
| Community Baptist Church of Groton Connecticut | 501(c)(3) | 2004 | ||||
| Connecticut Association of Wetland Scientists | 501(c)(4) | 1998 | $0 | $0 | 2024-12 | |
| Connecticut Breast Feeding Coalition | Health care | 501(c)(3) | 2010 | $0 | $0 | 2025-05 |
| Connecticut Education Association | Employment | 501(c)(5) | 2014 | $0 | $0 | 2025-06 |
| Covenant Presbyterian Church | 501(c)(3) | 1974 | ||||
| Crusaders Elite Flag Organization | Recreation and sports | 501(c)(3) | 2024 | |||
| Demarco Memorial Inc | Education | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Eastern Connecticut Emerald Society | Recreation and sports | 501(c)(7) | 2015 | $0 | $0 | 2025-12 |
| Faith Lutheran Church | 501(c)(3) | 1941 | ||||
| Fantasy Quest Productions Inc | Arts, culture and humanities | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Fitch Athletic Booster Club Inc | Education | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Fort Griswold Battlefield State Park Foundation Inc | Arts, culture and humanities | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Foundation L&M Inc | Human services | 501(c)(3) | 2026 | |||
| Glory Church | 501(c)(3) | 1986 | ||||
| Gospel Foundation of New England Inc | Religion-related | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Grasso Technical High School Pfo | 501(c)(3) | 2009 | $0 | $0 | 2026-06 | |
| Greater Groton Realty Corporation | Housing and shelter | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Green Knights Chapter 98 | Public and societal benefit | 501(c)(19) | 2026 | |||
| Groton Animal Foundation Inc | Animal-related | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Groton Bible Chapel Inc | Religion-related | 501(c)(3) | 2026 | |||
| Groton Board of Education | 501(c)(3) | 1945 | ||||
| Groton Congregational Church | 501(c)(3) | 1968 | ||||
| Groton Education Foundation Inc | Education | 501(c)(3) | 1996 | $0 | $0 | 2026-06 |
| Groton Foursquare Church | 501(c)(3) | 1949 | ||||
| Groton Lacrosse | Youth development | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Groton Middle School Pto | Education | 501(c)(3) | 2020 | $0 | $0 | 2026-07 |
| Groton Parks Foundation Inc | Recreation and sports | 501(c)(3) | 2000 | $0 | $0 | 2026-06 |
| Groton Public Library Circle of Friends Inc | Education | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Groton Regional Theatre Inc | Arts, culture and humanities | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Groton Rotary Community Awards Inc | 501(c)(3) | 1985 | $0 | $0 | 2025-06 | |
| Groton-Mystic Basketball | Recreation and sports | 501(c)(3) | 2019 | $0 | $0 | 2025-09 |
| Hands Up Global Foundation Inc | Human services | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Hispanic Shipbuilders Association Inc | Education | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Iglesia Emanuel Vision Celestial | Religion-related | 501(c)(3) | 2014 | |||
| International Association of Fire Fighters | 501(c)(5) | 1959 | $0 | $0 | 2025-12 | |
| International Association of Fire Fighters | 501(c)(5) | 1959 | $0 | $0 | 2025-09 | |
| Izzy Santiago Memorial Scholarship | Education | 501(c)(3) | 2025 | |||
| John Kelley Memorial Fund | Arts, culture and humanities | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Joseph A Baloga Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $55,797 | 2025-12 | |
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2026-06 | |
| Ladies Auxiliary of the Fleet Reserve Association | Public and societal benefit | 501(c)(19) | 2019 | $0 | $0 | 2025-12 |
| Lamb Christian Helping Hands Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $1,500 | 2025-12 | |
| Ledge Light Foundation | Arts, culture and humanities | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Little League Baseball Inc | Recreation and sports | 501(c)(3) | 1967 | $0 | $0 | 2023-09 |
| Margaret Drakeley Memorial Scholarship Fund | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $2,949 | 2025-12 | |
| Marine Science Magnet High School Pto | Education | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Merciful Redemption Church | Religion-related | 501(c)(3) | 2004 | |||
| Messina Family Foundation Inc | Youth development | 501(c)(3) | 2025 | $3,313 | 2025-12 | |
| Missionary Church of Groton | Religion-related | 501(c)(3) | 1999 | |||
| National Air Traffic Controllers Association | 501(c)(5) | 1990 | $0 | $0 | 2025-12 | |
| New London County Bar Association Inc | 501(c)(6) | 1983 | $0 | $0 | 2026-05 | |
| Noank Fire Company No 1 Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Nutmeg Volunteer Jr Ancient Fife & Drum Corps Inc | 501(c)(3) | 1987 | $0 | $0 | 2025-12 | |
| Organizacion Casa de Restauracion El Roi Inc | Religion-related | 501(c)(3) | 2025 | |||
| Outreach for the Unreached Soul Winning Ministry | Religion-related | 501(c)(3) | 2006 | |||
| Permit Technician Association of CT | Public and societal benefit | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Physicians for A National Health Program | 501(c)(3) | 1990 | $0 | $0 | 2025-12 | |
| Polidori Family Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2003 | $1 | 2025-12 | |
| Poquonnock Bridge Baptist Church Inc | 501(c)(3) | 1955 | ||||
| Poquonnock Bridge Neighborhood Association Inc | Community improvement and capacity building | 501(c)(3) | 2002 | $0 | $0 | 2023-12 |
| Purity Lodge 150 Ancient Free and Accepted Masons of Groton Mystic | 501(c)(10) | 2018 | $0 | $0 | 2025-12 | |
| Road Signs for Life | Crime and legal-related | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Robert E Fitch High School Athletic Hall of Fame Inc | Arts, culture and humanities | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Saints Way | Human services | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Scient Credit Union Foundation Inc | Education | 501(c)(3) | 2010 | $45,791 | 2025-12 | |
| Scient Federal Credit Union | 501(c)(1) | 2016 | ||||
| Seaport Community Church of the Assemblies of God | 501(c)(3) | 1964 | 2010-12 | |||
| Sixth Man | Recreation and sports | 501(c)(3) | 2023 | |||
| Sons of Hermann of the State of Connecticut | 501(c)(8) | 1972 | $0 | $0 | 2025-12 | |
| Southeastern Connecticut Womens Network | 501(c)(4) | 1998 | $0 | $0 | 2025-06 | |
| Southern New England Branch of the American Association for | Animal-related | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Southern New London County Mutiny Youth Football Club | Recreation and sports | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| St Johns Christian Church | 501(c)(3) | 1985 | ||||
| Submarine Officers Spouses Association Charitable Association | Education | 501(c)(3) | 2003 | $0 | $0 | 2025-06 |
| Submarine Officers Spouses Association New London | 501(c)(4) | 1978 | $0 | $0 | 2025-06 | |
| Sword Ministries Inc | Religion-related | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Templo Christiano Roca de Salvacion | 501(c)(3) | 1964 | ||||
| Thames River Innovation Places Inc | Environment | 501(c)(3) | 2019 | $0 | $0 | 2024-06 |
| Thames River Pto Inc | Education | 501(c)(3) | 2022 | $0 | $0 | 2026-07 |
| The Arts Cafe Mystic Inc | Arts, culture and humanities | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| The Sandbox Foundation Inc | 501(c)(3) | 2020 | $0 | $0 | 2025-12 | |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2023-12 | |
| Trinity Bible Church Inc | 501(c)(3) | 1988 | ||||
| U S Submarine Veterans Technology Inc | Science and technology | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| United States Submarine Veterans Inc | 501(c)(19) | 1980 | $0 | $0 | 2025-12 | |
| Unityct Inc | Religion-related | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Uss Missouri FRG | Public and societal benefit | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Victory Bible Baptist Church Inc | 501(c)(3) | 1988 | ||||
| Voice of Grace Ell | Education | 501(c)(3) | 2026 | |||
| William Meredith Foundation Inc | Arts, culture and humanities | 501(c)(3) | 2009 | $0 | $0 | 2023-12 |
| With Grace and Light Outreach Minis Try Inc | Religion-related | 501(c)(3) | 2026 | |||
| Work & Learn Inc | Human services | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
By cause in Groton, CT
- Education 17
- Arts, culture and humanities 13
- Religion-related 12
- Human services 11
- Recreation and sports 10
- Philanthropy, voluntarism and grantmaking foundations 7
- Employment 5
- Public and societal benefit 5
- Health care 3
- Animal-related 3
- Environment 3
- Youth development 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.