Data / Nonprofits / Connecticut / Westport
Nonprofits in Westport, CT: 380 registered with the IRS
380 nonprofits are registered with the IRS in Westport, CT, 338 of them 501(c)(3) charities; the 146 that report revenue took in $1.15 billion. The largest by revenue: Dalio Family Fund Inc ($806.9 million), Ufcw and Participating Employers New England Health Fund ($151.9 million), Oceanographic Research & Exploration Foundation ($33.5 million). Most common causes: philanthropy, voluntarism and grantmaking foundations (76), education (44), arts, culture and humanities (29).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Dalio Family Fund Inc | Human services | 501(c)(4) | 2019 | $806.9 million | $4.04 billion | 2024-12 |
| Ufcw and Participating Employers New England Health Fund | 501(c)(9) | 1959 | $151.9 million | $87.8 million | 2024-12 | |
| Oceanographic Research & Exploration Foundation | Science and technology | 501(c)(4) | 2019 | $33.5 million | $180.5 million | 2024-12 |
| Young Mens Christian Association Westport | Human services | 501(c)(3) | 1945 | $14.9 million | $70 million | 2025-12 |
| Clasp Homes Inc | 501(c)(3) | 1983 | $12 million | $7.9 million | 2025-06 | |
| Experience Camps | Youth development | 501(c)(3) | 2009 | $9.2 million | $10.7 million | 2025-09 |
| Westport Library Assoc | Education | 501(c)(3) | 1970 | $8.4 million | $29.6 million | 2025-06 |
| WRCH Inc | Human services | 501(c)(3) | 2024 | $7.8 million | $7.6 million | 2024-12 |
| The Birchwood Country Club Incorporated | 501(c)(7) | 1964 | $7.2 million | $11.7 million | 2024-12 | |
| Pierrepont School Inc | Education | 501(c)(3) | 2002 | $6.3 million | $9.3 million | 2025-06 |
| Fairfield County Hunt Club | 501(c)(7) | 1931 | $6.1 million | $9.4 million | 2025-10 | |
| Social Impact Partners Inc | Human services | 501(c)(3) | 2020 | $5.2 million | $4.5 million | 2025-06 |
| Westport Country Playhouse Inc | Arts, culture and humanities | 501(c)(3) | 1974 | $5.1 million | $13.6 million | 2024-12 |
| Saugatuck Child Care Services Inc | Human services | 501(c)(3) | 1981 | $4.6 million | $2.7 million | 2025-08 |
| United Food and Commercial Workers International Union | 501(c)(5) | 1941 | $4.2 million | $1.3 million | 2025-12 | |
| Earthplace the Nature Discovery Center Inc | Environment | 501(c)(3) | 1959 | $4.1 million | $7.8 million | 2025-06 |
| Westport Weston Family YMCA Foundation Inc | Human services | 501(c)(3) | 2016 | $3.8 million | $54.7 million | 2024-12 |
| Homes With Hope Inc | 501(c)(3) | 1984 | $3.6 million | $6.9 million | 2024-12 | |
| Oceanx Education Inc | Education | 501(c)(3) | 2024 | $3.4 million | $1.9 million | 2024-12 |
| Pink Aid Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2015 | $3.2 million | $3.8 million | 2025-03 |
| The Childrens Community Development Center Inc | 501(c)(3) | 1983 | $2.4 million | $1.6 million | 2025-08 | |
| Willowbrook Cemetery Association Inc | Mutual and membership benefit | 501(c)(13) | 2007 | $2 million | $7.5 million | 2025-12 |
| Cedar Point Yacht Club Incorporated | 501(c)(7) | 1965 | $1.8 million | $3.3 million | 2025-10 | |
| Learning Community Inc | Education | 501(c)(3) | 1971 | $1.8 million | $3.7 million | 2025-08 |
| Sasco Creek Development Corporation | Housing and shelter | 501(c)(3) | 2018 | $1.6 million | $18.2 million | 2024-12 |
| Westport Police Athletic League | 501(c)(3) | 1967 | $1.6 million | $1.8 million | 2025-07 | |
| Friends of the Levitt Pavilion Inc | 501(c)(3) | 1976 | $1.6 million | $869,774 | 2024-12 | |
| Horizons National Student Enrichment Program Inc | Youth development | 501(c)(3) | 1997 | $1.5 million | $3 million | 2025-09 |
| Saugatuck Harbor Yacht Club Inc | Recreation and sports | 501(c)(7) | 1964 | $1.5 million | $2.6 million | 2024-12 |
| Eastgate Equine Sanctuary Inc | Animal-related | 501(c)(3) | 2014 | $1.4 million | $26,774 | 2025-12 |
| Suzuki Music School of Westport Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $1.4 million | $1.7 million | 2025-08 |
| Westport-Weston Cooperative Nursery School Inc | Education | 501(c)(3) | 1977 | $1.3 million | $1.7 million | 2025-08 |
| Westport Soccer Association Inc | Recreation and sports | 501(c)(3) | 2005 | $1.3 million | $1.3 million | 2025-06 |
| Positive Directions-The Center for Prevention and Counseling Inc | Mental health and crisis intervention | 501(c)(3) | 1976 | $1.3 million | $499,121 | 2025-06 |
| Moca CT Inc | Arts, culture and humanities | 501(c)(3) | 1974 | $1.2 million | $5.4 million | 2025-06 |
| Westport Rotary Club Foundation Inc | Community improvement and capacity building | 501(c)(3) | 2022 | $1.2 million | $496,985 | 2025-06 |
| Catalytic Impact Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $1.1 million | $1.1 million | 2024-12 |
| GFNS Inc | Education | 501(c)(3) | 2022 | $1.1 million | $1.5 million | 2025-08 |
| Game Conservancy USA Inc | Recreation and sports | 501(c)(3) | 1986 | $1.1 million | $624,302 | 2025-12 |
| Theorem Media Inc | Arts, culture and humanities | 501(c)(3) | 2019 | $1 million | $78,673 | 2025-12 |
| Westport Volunteer Emergency Medical Service Inc | Health care | 501(c)(3) | 1980 | $988,343 | $7.6 million | 2025-06 |
| Equus Foundation Inc | Animal-related | 501(c)(3) | 2002 | $961,535 | $1.1 million | 2025-08 |
| Westport Baseball & Softball Inc | 501(c)(3) | 1967 | $880,087 | $1.5 million | 2025-12 | |
| Coalition To Cure Calpain 3 | Diseases, disorders and medical disciplines | 501(c)(3) | 2011 | $809,897 | $202,514 | 2025-12 |
| Westport Downtown Association Inc | Community improvement and capacity building | 501(c)(3) | 2021 | $708,633 | $207,652 | 2026-01 |
| Saugatuck Nursery School Inc | Education | 501(c)(3) | 2006 | $668,610 | $542,705 | 2025-06 |
| Westport Womans Club Inc | Environment | 501(c)(3) | 1967 | $640,084 | $2.7 million | 2025-08 |
| Staples High School Tuition Grants Committee Inc | Education | 501(c)(3) | 1976 | $612,724 | $3.1 million | 2025-07 |
| Oyebog Tennis Academy Inc | International, foreign affairs and national security | 501(c)(3) | 2000 | $589,618 | $19,926 | 2024-12 |
| Ukraine Aid International | Public safety, disaster preparedness and relief | 501(c)(3) | 2022 | $579,923 | $452,474 | 2025-12 |
| Connecticut Education Association | 501(c)(5) | 1971 | $537,800 | $110,814 | 2025-06 | |
| Simply Smiles Inc | Human services | 501(c)(3) | 2004 | $512,837 | $570,179 | 2025-12 |
| Hearts in Harmony Foundation | Medical research | 501(c)(3) | 2024 | $506,187 | $50,882 | 2024-12 |
| Embody Dance Organization Inc | Arts, culture and humanities | 501(c)(3) | 2021 | $492,473 | $26,338 | 2023-12 |
| Young Leadership Addiction Awareness Inc | Mental health and crisis intervention | 501(c)(3) | 2019 | $463,301 | $393,418 | 2025-09 |
| A Better Chance of Westport Inc | Youth development | 501(c)(3) | 2001 | $434,470 | $2.1 million | 2025-06 |
| Westport Writers Workshop I Inc | 501(c)(3) | 2015 | $432,696 | $199,518 | 2024-12 | |
| Special Education Legal Fund Inc | Education | 501(c)(3) | 2019 | $400,932 | $302,171 | 2025-06 |
| Westport Book Sale Ventures Inc | Employment | 501(c)(3) | 2019 | $390,404 | $187,849 | 2025-06 |
| Westport Football Association Inc | Recreation and sports | 501(c)(3) | 2003 | $382,227 | $117,466 | 2025-12 |
| A&B It S All Good Inc | Employment | 501(c)(3) | 2023 | $381,521 | $133,929 | 2025-12 |
| 290 Post Road West Corp Inc | 501(c)(2) | 1994 | $350,208 | $1.4 million | 2024-12 | |
| Mid-Fairfield County Association of Realtors Inc | 501(c)(6) | 1967 | $339,214 | $562,552 | 2025-12 | |
| Global Coalition On Sustainability Fka Us Coalition On Sustainability | Community improvement and capacity building | 501(c)(3) | 2020 | $306,707 | $125,665 | 2024-12 |
| Parent Child Center Inc | Education | 501(c)(3) | 1990 | $273,413 | $99,282 | 2025-08 |
| Bioethics International Inc | Science and technology | 501(c)(3) | 2008 | $270,186 | $853,425 | 2024-12 |
| Westport School of Music Inc | Arts, culture and humanities | 501(c)(3) | 1959 | $269,726 | $304,095 | 2025-08 |
| Westport Farmers Market Inc | Food, agriculture and nutrition | 501(c)(3) | 2011 | $269,117 | $291,160 | 2025-12 |
| I H A Inc | Housing and shelter | 501(c)(3) | 2000 | $234,088 | $515,408 | 2024-12 |
| Veterans of Foreign Wars of the United States Dept of Connecticut | 501(c)(19) | 1962 | $195,257 | $602,359 | 2026-06 | |
| Rachs Hope Inc | Human services | 501(c)(3) | 2019 | $192,921 | $288,189 | 2024-12 |
| Westport Chamber of Commerce Inc | 501(c)(6) | 1950 | $186,628 | $266,646 | 2024-12 | |
| Fairfield County Chorale Inc | 501(c)(3) | 1965 | $180,345 | $423,862 | 2026-06 | |
| Piglet International Inc | Education | 501(c)(3) | 2020 | $174,584 | $150,295 | 2025-12 |
| Direct Air Capture Coalition Inc | Environment | 501(c)(3) | 2023 | $171,185 | $151,062 | 2024-12 |
| Westport Uniformed Firefighters Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $165,101 | $203,445 | 2024-12 |
| Nest Egg Foundation Inc | Health care | 501(c)(3) | 2015 | $161,769 | $242,749 | 2025-12 |
| Westport Historical Society Inc | Arts, culture and humanities | 501(c)(3) | 1975 | $153,112 | $2.7 million | 2024-12 |
| Hist1h1e Genetic Syndrome Research Foundation Inc | Medical research | 501(c)(3) | 2020 | $152,633 | $73,516 | 2025-12 |
| 06880 Inc | Community improvement and capacity building | 501(c)(3) | 2022 | $152,229 | $83,755 | 2025-12 |
| Tails | Animal-related | 501(c)(3) | 2001 | $151,908 | $124,652 | 2025-12 |
| Westport Police Benevolent Association Inc | 501(c)(5) | 1971 | $151,874 | $813,348 | 2024-12 | |
| Rosalind Franklin Society | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $151,082 | $189,621 | 2024-12 |
| Sunrise Rotary 21St Century Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2001 | $146,072 | $129,971 | 2026-06 |
| Friends of Balanya English Academy | Education | 501(c)(3) | 2022 | $145,189 | $1 | 2025-12 |
| Water Rats Parents Club Inc | Recreation and sports | 501(c)(3) | 1997 | $137,862 | $244,070 | 2025-08 |
| Y S Men of Westport Weston Inc | 501(c)(7) | 1995 | $133,552 | $56,415 | 2025-06 | |
| Friends of Westport Parks and Recreation Inc | Community improvement and capacity building | 501(c)(3) | 2014 | $130,614 | $393,837 | 2025-12 |
| Chris Mello Scholarship Fund | Education | 501(c)(3) | 2020 | $128,958 | $294,777 | 2025-12 |
| Blau House & Gardens Inc | Environment | 501(c)(3) | 2022 | $127,420 | $117,335 | 2025-12 |
| Institute for Professional Education Inc | Education | 501(c)(3) | 2009 | $126,500 | $66,812 | 2024-12 |
| Trustees of Temple Lodge No 65 A F and A M | 501(c)(10) | 1951 | $124,475 | $1.4 million | 2024-12 | |
| Startup Westport Inc | Community improvement and capacity building | 501(c)(3) | 2024 | $118,216 | $95,521 | 2025-12 |
| Parent Booster USA Inc | Education | 501(c)(3) | 2005 | $118,074 | $95,345 | 2025-07 |
| Soundview Empowerment Alliance Inc | Community improvement and capacity building | 501(c)(3) | 2022 | $117,984 | $1.6 million | 2025-12 |
| Staples Diamond Club Inc | Recreation and sports | 501(c)(3) | 2005 | $116,197 | $39,132 | 2024-12 |
| International Association of Fire Fighters | 501(c)(5) | 1940 | $114,713 | $129,266 | 2025-12 | |
| 203 Squash Association Inc | Recreation and sports | 501(c)(3) | 2019 | $113,420 | $41,238 | 2025-12 |
| Tryline Rugby Club Inc | Arts, culture and humanities | 501(c)(3) | 2025 | $112,592 | $77,776 | 2025-12 |
| Westport Young Womans League Inc | 501(c)(3) | 1999 | $104,941 | $114,237 | 2025-06 | |
| Staples Boys Soccer Foundation Inc | Recreation and sports | 501(c)(3) | 2024 | $99,563 | $138,015 | 2025-06 |
| Heart Trust Inc | Health care | 501(c)(3) | 2007 | $95,571 | $512,919 | 2025-12 |
| Parent Booster USA Inc | Education | 501(c)(3) | 2005 | $88,986 | $29,073 | 2025-12 |
| Amateur Athletic Union of the United States | Recreation and sports | 501(c)(3) | 2005 | $88,002 | $55,292 | 2025-08 |
| International Concussion Society | Diseases, disorders and medical disciplines | 501(c)(3) | 2019 | $84,426 | $55,786 | 2024-12 |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $84,039 | $167,179 | 2025-06 | |
| Music for Youth Inc | Arts, culture and humanities | 501(c)(3) | 2003 | $80,156 | $368,807 | 2025-12 |
| Lift-The-Lid | International, foreign affairs and national security | 501(c)(3) | 2014 | $79,641 | $47,762 | 2025-12 |
| Westport Police Foundation Inc | Crime and legal-related | 501(c)(3) | 2018 | $78,135 | $61,678 | 2025-12 |
| Rotary International | Community improvement and capacity building | 501(c)(4) | 2022 | $73,328 | $16,360 | 2025-06 |
| Chad A Jacobs Memorial Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $72,751 | $461,185 | 2024-12 |
| Westport Community Theatre | Arts, culture and humanities | 501(c)(3) | 1957 | $72,657 | $78,341 | 2025-06 |
| American Telemedicine Connect Consortium Inc | Health care | 501(c)(3) | 2019 | $72,264 | $68,370 | 2025-06 |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $71,836 | $48,713 | 2025-06 | |
| Wwire Inc | Community improvement and capacity building | 501(c)(6) | 2023 | $71,512 | $1 | 2024-12 |
| Westport Field Hockey Inc | Recreation and sports | 501(c)(3) | 2015 | $67,081 | $40,062 | 2024-12 |
| Staples Players Boosters Inc | Education | 501(c)(3) | 2022 | $65,734 | $50,951 | 2025-06 |
| Mohonk Education and Neuropsychological Foundation Inc | Human services | 501(c)(3) | 2000 | $65,483 | $1.2 million | 2024-12 |
| Breast Cancer Emergency Aid Foundation | Diseases, disorders and medical disciplines | 501(c)(3) | 2007 | $62,991 | $79,412 | 2025-12 |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $57,853 | $125,551 | 2025-06 | |
| Friends of the Westport Center for Senior Activities Inc | Human services | 501(c)(3) | 2005 | $57,405 | $229,181 | 2025-06 |
| Westport Professional Fire Fighters Association Inc | 501(c)(4) | 1985 | $56,490 | $531,487 | 2024-12 | |
| Elizabeths Smile Foundation | Mental health and crisis intervention | 501(c)(3) | 2022 | $54,479 | $113,375 | 2024-12 |
| Myteam Triumph Inc | Recreation and sports | 501(c)(3) | 2025 | $51,479 | $74,061 | 2024-12 |
| Gsocc Boosters Inc | Recreation and sports | 501(c)(3) | 2019 | $49,388 | $55,551 | 2026-05 |
| Westport Pba Scholarship Foundation Inc | Education | 501(c)(3) | 2012 | $44,893 | $172,962 | 2025-06 |
| Ptsa Connecticut Congress | 501(c)(3) | 1955 | $44,649 | $38,640 | 2025-06 | |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $40,306 | $71,637 | 2025-06 | |
| Maplewood Senior Living Heart Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $40,011 | $7,872 | 2024-12 |
| Ufcw Local 371 Community Charity Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $39,698 | $10,015 | 2024-12 |
| Charter Oak Challenge Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $30,503 | $106,758 | 2025-12 |
| Laddie Lawrence Scholarship Fund Inc | Education | 501(c)(3) | 2011 | $30,101 | $588,529 | 2024-12 |
| Horace Staples Trust | 501(c)(91) | $29,666 | $695,736 | 2025-12 | ||
| Moms in Security Inc | Crime and legal-related | 501(c)(3) | 2022 | $29,169 | $11,322 | 2025-12 |
| Udayani Cultural Club Inc | Arts, culture and humanities | 501(c)(3) | 2022 | $21,178 | $13,837 | 2025-12 |
| Theatre Artists Workshop of Westport Inc | Arts, culture and humanities | 501(c)(3) | 1984 | $19,015 | $74,938 | 2026-03 |
| Open Doors Foundation Corp | Youth development | 501(c)(3) | 2019 | $17,578 | $6,012 | 2024-12 |
| Ys Women Inc | Recreation and sports | 501(c)(7) | 2015 | $14,071 | $7,227 | 2025-06 |
| Robert A Welke Cancer Research Foundation Inc | Medical research | 501(c)(3) | 1995 | $13,697 | $73,997 | 2023-12 |
| Connecticut Braille Association Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1962 | $13,251 | $7,176 | 2025-12 |
| Black Psychoanalysts Speak Inc | Education | 501(c)(3) | 2018 | $8,872 | $47,685 | 2025-12 |
| Remarkable Steam Inc | Environment | 501(c)(3) | 2014 | $4,834 | $9,309 | 2025-12 |
| Generation Ubuntu NFP | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $841 | $4,499 | 2024-12 |
| Sports Youth Fund Inc | Youth development | 501(c)(3) | 2022 | $350 | $689 | 2024-12 |
| Meals for Music Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $198 | $279 | 2025-12 |
| Crutches 4 Kids Inc | Health care | 501(c)(3) | 2010 | $161 | $229,754 | 2024-12 |
| 460 Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $1.1 million | 2025-05 | |
| 9 Fruit Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| A Welcome Home Inc | Civil rights, social action and advocacy | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Academic Partners for Adults | Education | 501(c)(3) | 2025 | $0 | $0 | 2026-01 |
| Adolph and Ruth Schnurmacher Foundation Inc | 501(c)(3) | 1978 | $18.4 million | 2025-12 | ||
| Aegis | Education | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Aerial Pet Recovery Inc | Animal-related | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Amenuveve Inc | Community improvement and capacity building | 501(c)(3) | 2020 | $0 | $0 | 2025-03 |
| America Smiles Inc | Youth development | 501(c)(3) | 2026 | |||
| Ancient Free & Accepted Masons of Connecticut | 501(c)(10) | 1972 | $0 | $0 | 2026-03 | |
| Apotheneum Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| Architecture Is Free Foundation Inc | Education | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Arthur and Claudia Cohen Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $2 million | 2024-12 | |
| Artists Collective of Westport | Arts, culture and humanities | 501(c)(3) | 2018 | $0 | $0 | 2025-06 |
| August Matthias American Legion Post 63 | Public and societal benefit | 501(c)(19) | 2025 | $0 | $0 | 2024-12 |
| Avoda Institute LTD | Arts, culture and humanities | 501(c)(3) | 2004 | $0 | $0 | 2025-06 |
| B Love Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Backpacks for the Better | Human services | 501(c)(3) | 2024 | |||
| Bahais of Westport Town | 501(c)(3) | 1995 | ||||
| Barbara S and Benjamin M Cardozo Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $236,584 | 2026-04 | |
| Baxter Foundation Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $390,264 | 2025-12 | |
| Behasstic Inc | Arts, culture and humanities | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Beit Chaverim Synagogue of Westport Norwalk Inc | Religion-related | 501(c)(3) | 1997 | |||
| Benjamins Gift Corp | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Bertram Steinman Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $1.9 million | 2025-12 | |
| Better World Fund | International, foreign affairs and national security | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Bhadra Water Safety Foundation | Youth development | 501(c)(3) | 2026 | |||
| Bike Westport | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Bittersweet Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $1 | 2025-12 | |
| Blessing Korean Church Inc | Religion-related | 501(c)(3) | 2026 | |||
| Boroughs Fam Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $580,876 | 2025-12 | |
| Breathe 4 Als Inc | Medical research | 501(c)(3) | 2019 | $22,599 | 2024-12 | |
| Bridge Back2school Corporation | Education | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Broom Works Foundation | Human services | 501(c)(3) | 2025 | $95,339 | 2024-12 | |
| Building Brilliant Futures | Youth development | 501(c)(3) | 2024 | $38,016 | 2024-12 | |
| Cacouna Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $1 | 2025-12 | |
| Carle C Conway Scholarship Foundation Inc | 501(c)(3) | 1952 | $2.2 million | 2025-06 | ||
| Carry Me Comfort Inc | Human services | 501(c)(3) | 2021 | $145 | 2023-12 | |
| Cat Rescue Inc | Animal-related | 501(c)(3) | 2019 | $0 | $0 | 2025-03 |
| Center for Living Systems Psychologies Inc | Mental health and crisis intervention | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Chabad Lubavitch of Westport | 501(c)(3) | 1997 | ||||
| Charley With A Y Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $0 | $0 | 2025-07 |
| China Care Foundation Inc | International, foreign affairs and national security | 501(c)(3) | 2001 | $49,107 | 2024-12 | |
| Christian J and Eva W Trefz Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $125,021 | 2025-06 | |
| Church of the Assumption | 501(c)(3) | 1946 | ||||
| Cloud Peak Energy Black Lung Benefits Trust | Diseases, disorders and medical disciplines | 501(c)(21) | 2025 | |||
| Community Foundation for Christian Jewish Understanding | Religion-related | 501(c)(3) | 2006 | $185 | 2024-04 | |
| Compassion Let It Begin With Me Inc | Health care | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Connecticut Farmers Market Association Inc | Food, agriculture and nutrition | 501(c)(3) | 2025 | |||
| Connecticut Netball Inc | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Cuddles for Courage | Human services | 501(c)(3) | 2025 | |||
| Dalio Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2003 | $1.67 billion | 2024-12 | |
| David T Langrock Foundation | 501(c)(92) | 1973 | $1.6 million | 2024-11 | ||
| David and Geri Epstein Private Foundation Dated 9-13-00 | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $31.5 million | 2024-12 | |
| Deep Audit Inc | Education | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Dekker Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $384,999 | 2025-12 | |
| Dionne Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $38 | 2025-12 | |
| Donna and Stuart Farber Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $972,264 | 2025-12 | |
| Dottie Club Corp | Public and societal benefit | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Drake Group | Education | 501(c)(4) | 2014 | $0 | $0 | 2025-12 |
| Drew Friedman Community Arts Center Inc | Arts, culture and humanities | 501(c)(3) | 2017 | $228,484 | 2024-12 | |
| East Meadow Road Association | 501(c)(4) | 1998 | $0 | $0 | 2025-12 | |
| Entertainment Consumers Association Inc | Recreation and sports | 501(c)(4) | 2007 | $0 | $16,674 | 2024-12 |
| Fairfield Bridle Trails Assoc Inc | Environment | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Falcon Gridiron Club Inc | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2025-07 |
| Federated Garden Clubs of Connecticut Inc | 501(c)(3) | 1967 | $0 | $0 | 2025-12 | |
| Federated Garden Clubs of Connecticut Inc | 501(c)(3) | 1967 | $0 | $0 | 2025-10 | |
| Fetch Rescue Corp | Animal-related | 501(c)(3) | 2023 | $0 | $0 | 2026-06 |
| Flatiron Foundation Inc | Community improvement and capacity building | 501(c)(3) | 2022 | $846 | 2025-12 | |
| Focus On the Children | Human services | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Foundation for Gender Equality and Womens Empowerment Trust 03112016 | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $12,414 | 2024-12 | |
| Fox Family Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $1.7 million | 2023-10 | |
| Friends of Sherwood Island State Park | Environment | 501(c)(3) | 1997 | $0 | $0 | 2024-12 |
| Friends of Westport Public Art Collections Inc | Arts, culture and humanities | 501(c)(3) | 2016 | $0 | $0 | 2025-06 |
| Fuel for Focus | Mental health and crisis intervention | 501(c)(3) | 2025 | |||
| GDL Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $1.2 million | 2025-12 | |
| Gene and Ros Gans Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $167,020 | 2025-06 | |
| Georgescu Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $1.3 million | 2025-12 | |
| Girls Staples High School Ice Hockey Booster Club Inc | Recreation and sports | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Global Survivors Fund USA Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | $0 | $0 | 2025-06 |
| Gould Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $2.1 million | 2024-12 | |
| Graf Beissel Von Gymnich Family Fou Ndation | Education | 501(c)(3) | 2026 | |||
| Greatexplanations Foundation Inc | Education | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Gupta Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $778,738 | 2024-12 | |
| Harmonetiks Project Inc | Health care | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Harold and Bernicestine McLeod Bail Ey Foundation Inc | Education | 501(c)(3) | 2026 | |||
| Harvest Now | Food, agriculture and nutrition | 501(c)(3) | 2014 | $10,842 | 2025-12 | |
| Hazel Dell Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2018 | $1.5 million | 2024-12 | |
| Holocaust Child Survivors of Connecticut Inc | Education | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Homeland Hoops Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Horizons Housing Developers Incorporated | Housing and shelter | 501(c)(3) | 2022 | $0 | $0 | 2026-06 |
| Icep Global Foundation Inc | Human services | 501(c)(3) | 2026 | |||
| Intandem Impact Foundation | Civil rights, social action and advocacy | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Invest Diva Private Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $345,118 | 2025-12 | |
| Is Your School Safe | Education | 501(c)(3) | 2026 | |||
| Israelis-In-Ct Inc | Arts, culture and humanities | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Jerry Fund Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $11,623 | 2025-12 | |
| Joan F Dionne Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $338,150 | 2025-12 | |
| Juan Jacobo de Lara & Jonne Low de Lara Foundation Inc | 501(c)(3) | 1979 | $4.6 million | 2026-04 | ||
| Just So You Know Inc | Arts, culture and humanities | 501(c)(3) | 2008 | $0 | $0 | 2024-12 |
| Kahn Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $639,211 | 2024-12 | |
| Karen Katen Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $4 million | 2025-12 | |
| Karen Leung Memorial Foundation USA | Health care | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Katz Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $1.5 million | 2024-12 | |
| Kidsovercancer Foundation Inc | Health care | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 | |
| Korok Cultural Association | Arts, culture and humanities | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| L A T Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2001 | $1.3 million | 2025-06 | |
| Lamando Fam Foundation Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $4.6 million | 2025-12 | |
| League of Womens Voters of Connecticut Inc | 501(c)(4) | 1964 | $0 | $0 | 2025-06 | |
| Lemmon Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $1.6 million | 2025-12 | |
| Libby Holman Foundation Inc | 501(c)(3) | 1962 | $2.9 million | 2025-10 | ||
| Liddy Fam Foundation Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $1.9 million | 2025-12 | |
| Light A Fire Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2024 | |||
| Lipton Foundation Inc | 501(c)(3) | 1949 | $399,631 | 2025-12 | ||
| Live To Love To Live Corp | Mental health and crisis intervention | 501(c)(3) | 2015 | $0 | $1 | 2025-12 |
| Liz Milwe Inc | 501(c)(3) | 1980 | $0 | $0 | 2025-12 | |
| Local 371-Robert Burke Petronella Memorial Scholarship Fund | 501(c)(3) | 1973 | $0 | $0 | 2025-12 | |
| M Bonnie Axthelm Charitable Foundation | Employment | 501(c)(3) | 1997 | $161,726 | 2025-12 | |
| Macinnis Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $705,978 | 2025-12 | |
| Malaika Kids Us Inc | International, foreign affairs and national security | 501(c)(3) | 2008 | $0 | $0 | 2024-12 |
| Mariposa Pathways To Health | Health care | 501(c)(3) | 2026 | |||
| Martello Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $8.3 million | 2025-12 | |
| Maruf CT | Civil rights, social action and advocacy | 501(c)(4) | 2025 | $0 | $0 | 2025-12 |
| Mary Jane Lane Road Association Inc | 501(c)(4) | 1998 | $0 | $0 | 2024-12 | |
| McInerney Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $4.6 million | 2026-04 | |
| Mias Angel Fund Inc | Human services | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Michael S Sachs Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2018 | $676,817 | 2025-12 | |
| Minuteman Yacht Club Inc | 501(c)(7) | 1974 | $0 | $0 | 2026-03 | |
| Minuteman Youth Development Foundat Ion | Recreation and sports | 501(c)(3) | 2026 | |||
| Modern Quilt Guild Inc | Arts, culture and humanities | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| My Childs Hand Foundation Trust | Diseases, disorders and medical disciplines | 501(c)(3) | 2004 | $1.5 million | 2024-12 | |
| National Alliance of Research Associates Program Inc | Health care | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| National Charity League Westport Chapter | Community improvement and capacity building | 501(c)(3) | 2009 | $0 | $0 | 2026-05 |
| National Society of the Sons of the American Revolution | 501(c)(3) | 1944 | $0 | $0 | 2025-12 | |
| New York City Association of Trauma Therapists | Education | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Newmans Own Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $215.7 million | 2024-12 | |
| Niblack Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $37,125 | 2025-12 | |
| Nonprofitxchange Inc | Community improvement and capacity building | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Northeast Right To Work Coalition Inc | 501(c)(4) | 2018 | $0 | $0 | 2025-09 | |
| Norwalk Community Chorale Inc | Arts, culture and humanities | 501(c)(3) | 1995 | $0 | $0 | 2025-07 |
| Nutmeg Basketball Association Inc | Recreation and sports | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Old Oak Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $120,718 | 2025-06 | |
| Olympic Athletes Rowing at Saugatuck Inc | Recreation and sports | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| One Bloodline- Hockey 4 Humanity Inc | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Osprey for Liberty Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| Our Vision Inc | 501(c)(3) | 1980 | $0 | $0 | 2025-12 | |
| PCT4PC Inc | Health care | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Parent Booster USA Inc | Education | 501(c)(3) | 2005 | $0 | $0 | 2025-06 |
| Patricia Armstrong Dressler Foundation Trust Agreement | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $232 | 2025-12 | |
| Pequot Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2013 | $28,860 | 2025-12 | |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $0 | $0 | 2025-06 | |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $0 | $0 | 2025-06 | |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $0 | $0 | 2025-06 | |
| Ptsa Connecticut Inc | 501(c)(3) | 1955 | $0 | $0 | 2025-06 | |
| R Channing Wheeler Familyfoundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $1.7 million | 2025-12 | |
| Richard and Patricia Jay Charitable Foundation | Medical research | 501(c)(3) | 2019 | $10,066 | 2025-12 | |
| Rotary International | 501(c)(4) | 1958 | $0 | $0 | 2025-06 | |
| Rumi Mind Foundation Inc | Mental health and crisis intervention | 501(c)(3) | 2026 | |||
| Ruth F and Henry W Klein Foundation Inc | 501(c)(3) | 1960 | $1,104 | 2024-12 | ||
| SFHBC Inc | Education | 501(c)(3) | 2015 | $0 | $0 | 2025-08 |
| Sachs Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $547,053 | 2025-12 | |
| Saint Paul Lutheran Church | 501(c)(3) | 1941 | ||||
| Sante Imanite Inc | Health care | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Saugatuck Safe Harbor Foundation | Environment | 501(c)(3) | 2026 | |||
| Seevers Family Foundation | 501(c)(3) | 1989 | $1.8 million | 2025-07 | ||
| Share the Hour Inc | Education | 501(c)(3) | 2024 | |||
| Shark Side Inc | Animal-related | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Shop for A Better World Corporation | Public and societal benefit | 501(c)(3) | 2020 | $0 | $0 | 2026-06 |
| Soft Focus Foundation | Arts, culture and humanities | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Spark Your Heart | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2012 | $0 | $0 | 2026-03 |
| St Lukes Roman Catholic Church Inc | 501(c)(3) | 1946 | 2014-06 | |||
| St Paul Lutheran PS and KDG | 501(c)(3) | 1941 | ||||
| Staples Flag Football Booster Club Inc | Recreation and sports | 501(c)(3) | 2026 | |||
| Staples Girls Basketball Association | Recreation and sports | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Staples Matmen Club | Recreation and sports | 501(c)(3) | 2024 | |||
| Staples Music Parents Association | Education | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Staples Softball Booster Club Inc | Youth development | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Step for A Cause Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Stewart & Constance Greenfield Foundation | 501(c)(3) | 1988 | $192,952 | 2025-12 | ||
| Storytellers | Arts, culture and humanities | 501(c)(3) | 2025 | |||
| Students of Economics | Education | 501(c)(3) | 2026 | |||
| Survive-Oars Inc | Health care | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Sustainable Westport Inc | Environment | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| T&T Family Foundation | Youth development | 501(c)(3) | 2025 | |||
| Take Space Institute Inc | Education | 501(c)(3) | 2026 | |||
| Team Digeronimo | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2024 | $147,376 | 2025-12 | |
| Teen Awareness Group | Youth development | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Temple Israel Westport Inc | 501(c)(3) | 1968 | ||||
| The Backyard Beekeepers Association Inc | Animal-related | 501(c)(3) | 1998 | $0 | $0 | 2024-12 |
| The Conservative Synagogue Inc | 501(c)(3) | 1988 | ||||
| The David and Dorothy Carpenter Charitable Trust | 501(c)(3) | 1989 | $642,298 | 2025-12 | ||
| The Filmmaker Fund | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2012 | $3.5 million | 2024-12 | |
| The Greenfield Partners Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $2 | 2025-12 | |
| The Harman Family Foundation | 501(c)(3) | 1967 | $309,816 | 2024-12 | ||
| The Laurel Camps Foundation Inc | Youth development | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| The Moskowitz Foundation Inc | 501(c)(3) | 1988 | $1,496 | 2025-12 | ||
| The Neighbors and Newcomers of Westport | 501(c)(7) | 1973 | $0 | $0 | 2025-05 | |
| The Rock N Roll Collective Foundation | Arts, culture and humanities | 501(c)(3) | 2026 | |||
| The Schneerson Center for Jewish Life CT Inc | Religion-related | 501(c)(3) | 2006 | |||
| The Stanley E Maas Foundation | 501(c)(3) | 1985 | $2 million | 2026-04 | ||
| The Walter Kann Foundation Inc | 501(c)(3) | 1988 | $246,309 | 2025-09 | ||
| Thelcrfoundation Foundation | International, foreign affairs and national security | 501(c)(3) | 2026 | |||
| Third Millennium Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $2,590 | 2025-12 | |
| Toastmasters International | 501(c)(3) | 1966 | $0 | $0 | 2025-12 | |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2025-12 | |
| Travel With Purpose Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | |||
| Trinity Mens Lacrosse Association | Recreation and sports | 501(c)(3) | 2026 | |||
| Troilo Family Scholarship Inc | Education | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Unbound Collective Inc | Education | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Undergraduate Moot Court Team | Education | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Unitarian Universalist Congregation in Westport Inc | 501(c)(3) | 1992 | 2025-06 | |||
| United States of America Informatic S Olympiad in Teams | Education | 501(c)(3) | 2026 | |||
| VFW Auxiliary Department of Connecticut Inc | Public and societal benefit | 501(c)(19) | 2009 | $0 | $0 | 2026-06 |
| Walsh Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $957,478 | 2025-12 | |
| Walter Family Pediatric Leukemiafoundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Weismann Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $1.7 million | 2025-12 | |
| Welifeguard Inc | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Westchester County Bankers Association | Community improvement and capacity building | 501(c)(6) | 2017 | $0 | $0 | 2025-04 |
| Westport Astronomical Society Inc | 501(c)(3) | 1990 | $0 | $0 | 2025-12 | |
| Westport Evergreen Inc | Environment | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Westport International Film Festiva L Inc | Arts, culture and humanities | 501(c)(3) | 2026 | |||
| Westport Music Society Inc | Arts, culture and humanities | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Westport Pride Incorporated | Civil rights, social action and advocacy | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Westport Volunteer Fire Department Inc | 501(c)(4) | 1990 | $0 | $0 | 2025-12 | |
| Whittaker Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $17.5 million | 2024-12 | |
| William and Lynda Steere Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $8.6 million | 2025-12 | |
| Williams Cookie Jar Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $335,842 | 2025-04 | |
| Winston E Allen Foundation Inc | Education | 501(c)(3) | 2018 | $0 | $0 | 2025-06 |
| Witt-Hoey Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1999 | $171,724 | 2024-12 | |
| Womens Medical Association of Fairfield County Inc | 501(c)(6) | 1993 | $0 | $0 | 2025-09 | |
| Wreckers Hockey Booster Club Incoporated | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Yale Jewish Alumni Association Inc | Education | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Your Time To Shine Inc | Arts, culture and humanities | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
By cause in Westport, CT
- Philanthropy, voluntarism and grantmaking foundations 76
- Education 44
- Arts, culture and humanities 29
- Recreation and sports 26
- Human services 19
- Health care 14
- Community improvement and capacity building 14
- Youth development 12
- Environment 10
- Animal-related 8
- Mental health and crisis intervention 7
- Diseases, disorders and medical disciplines 6
- International, foreign affairs and national security 6
- Medical research 5
- Religion-related 4
- Public and societal benefit 4
- Civil rights, social action and advocacy 4
- Housing and shelter 3
- Employment 3
- Food, agriculture and nutrition 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.