Data / Nonprofits / Connecticut
Nonprofits in Connecticut: 23,749 registered with the IRS
23,749 nonprofits are registered with the IRS in Connecticut, 19,348 of them 501(c)(3) charities; the 7,785 that report revenue took in $60.78 billion. The most are in New Haven (1,278), Hartford (1,092), Stamford (847). The largest by revenue: Yale University ($8.45 billion), Yale New Haven Hospital ($4.88 billion), Hartford Hospital ($2.94 billion).
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By cause
- Education 2,498
- Religion-related 1,784
- Arts, culture and humanities 1,698
- Philanthropy, voluntarism and grantmaking foundations 1,589
- Human services 1,534
- Recreation and sports 1,472
- Community improvement and capacity building 740
- Health care 553
- Youth development 522
- Animal-related 516
- Environment 441
- Public and societal benefit 389
- Housing and shelter 379
- Employment 281
- Mental health and crisis intervention 260
- Public safety, disaster preparedness and relief 259
- International, foreign affairs and national security 237
- Mutual and membership benefit 227
- Food, agriculture and nutrition 214
- Diseases, disorders and medical disciplines 183
- Civil rights, social action and advocacy 129
- Crime and legal-related 116
- Medical research 98
- Science and technology 84
- Social science 17
By city
- New Haven 1,278
- Hartford 1,092
- Stamford 847
- Bridgeport 662
- Greenwich 570
- West Hartford 538
- Waterbury 525
- Norwalk 511
- Hamden 451
- Danbury 434
- Fairfield 420
- Westport 380
- Middletown 319
- New Britain 310
- Manchester 301
- Wallingford 285
- Milford 281
- Stratford 276
- Glastonbury 272
- Meriden 265
- New Canaan 260
- East Hartford 233
- Bristol 228
- Trumbull 227
- Ridgefield 224
- Shelton 224
- Darien 222
- Bloomfield 222
- West Haven 220
- North Haven 215
- Windsor 211
- New London 209
- Guilford 202
- Cheshire 201
- Branford 197
- Wilton 193
- Wethersfield 191
- Norwich 190
- Monroe 189
- Torrington 180
- Newtown 170
- Enfield 167
- New Milford 165
- Farmington 164
- Groton 161
- Southington 155
- South Windsor 154
- Avon 146
- Newington 141
- Simsbury 135
- Madison 133
- Rocky Hill 130
- Naugatuck 123
- Orange 122
- Litchfield 119
- Southbury 117
- Mystic 114
- Waterford 107
- Bethel 105
- Woodbridge 101
- Old Greenwich 101
- Old Saybrook 97
- Wolcott 93
- Old Lyme 91
- Brookfield 91
- Berlin 91
- Weston 88
- Cromwell 88
- Plainville 86
- Willimantic 85
- Vernon 85
- Niantic 84
- Tolland 84
- East Haven 82
- Woodbury 78
- Stonington 77
- Essex 76
- Cos Cob 76
- Riverside 75
- Suffield 75
- Colchester 75
- Seymour 75
- Putnam 74
- Clinton 74
- Watertown 73
- Winsted 70
- Ellington 69
- Ansonia 68
- Granby 67
- Redding 64
- Windsor Locks 63
- Prospect 62
- Storrs 62
- East Hampton 62
- Derby 61
- Southport 60
- Portland 60
- Easton 58
- Oxford 58
- New Fairfield 54
- Danielson 53
- Sandy Hook 53
- Hebron 52
- Coventry 51
- Somers 51
- Middlebury 51
- Bethany 51
- East Lyme 50
- Woodstock 49
- New Hartford 49
- Burlington 49
- Westbrook 46
- Terryville 45
- Winchestr Center 45
- Plantsville 44
- Deep River 44
- Pawcatuck 43
- Thomaston 43
- Killingworth 43
- Durham 42
- Ledyard 42
- Gales Ferry 41
- Sharon 41
- East Haddam 41
- Kent 41
- Unionville 41
- Higganum 40
- Canton 39
- Bethlehem 39
- N Branford 38
- Harwinton 37
- Marlborough 37
- Columbia 36
- Preston 36
- East Granby 36
- Norfolk 36
- Salisbury 36
- Moodus 35
- Bolton 35
- Oakdale 35
- Collinsville 35
- Lebanon 35
- Goshen 34
- Jewett City 33
- Stafford SPGS 33
- Brooklyn 32
- N Stonington 32
- Chester 32
- Beacon Falls 31
- Kensington 31
- Broad Brook 31
- Canterbury 31
- Canaan 31
- Sherman 30
- Lakeville 30
- S Glastonbury 29
- Washington 29
- Bridgewater 29
- Willington 29
- Plainfield 27
- Oakville 27
- Middlefield 27
- East Windsor 26
- Pomfret Center 26
- N Grosvenordl 26
- West Simsbury 26
- Ashford 26
- Griswold 25
- Uncasville 25
- Dayville 25
- Weatogue 25
- Roxbury 24
- Mansfield Center 23
- Moosup 22
- Falls Village 22
- Washington DT 22
- Salem 22
- Northford 21
- Vernon Rockvl 21
- Thompson 21
- Andover 21
- Rowayton 20
- Yalesville 19
- Bozrah 19
- West Cornwall 19
- Haddam 19
- Lyme 19
- Quaker Hill 18
- New Preston 17
- Taftville 17
- Hampton 17
- Chaplin 17
- Voluntown 17
- Storrs Manfld 16
- Colebrook 16
- Barkhamsted 15
- Morris 14
- Georgetown 14
- Baltic 13
- Amston 13
- Ivoryton 13
- Lisbon 13
- East Berlin 12
- Pomfret 12
- Northfield 12
- Eastford 12
- Mansfield 12
- West Granby 11
- West Suffield 11
- W Hartford 11
- Centerbrook 11
- North Windham 11
- Windham 11
- Cornwall 10
- Warren 10
- North Granby 10
- Hawleyville 10
- Stafford Springs 9
- Rockfall 9
- South Kent 9
- Old Mystic 9
- Bantam 9
- Plymouth 8
- Noank 8
- Gaylordsville 8
- South Windham 8
- Pleasant Vly 8
- Tariffville 8
- Franklin 8
- Cornwall BRG 8
- Sterling 8
- N Franklin 7
- Riverton 7
- Greens Farms 7
- Hadlyme 7
- Scotland 7
- Quinebaug 7
- Rockville 6
- West Redding 6
- Canton Center 6
- Redding Center 6
- Central VLG 6
- E Killingly 6
- Vernon Rockville 6
- West Hartfrd 6
- Oneco 6
- West Mystic 6
- Marion 6
- Milldale 6
- East Canaan 5
- Middle Haddam 5
- Union 5
- Cobalt 5
- East Hartland 5
- North Branford 4
- Poquonock 4
- South Norwalk 4
- Montville 4
- Haddam Neck 4
- Redding Ridge 4
- E Woodstock 4
- Stafford 4
- East Norwalk 3
- W Haven 3
- S Woodstock 3
- E Hartford 3
- Versailles 3
- E Windsor HL 3
- North Canaan 3
- Stanford 3
The 100 largest by revenue
| Organization | City | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|---|
| Yale University | New Haven | Education | 501(c)(3) | 1992 | $8.45 billion | $58.93 billion | 2025-06 |
| Yale New Haven Hospital | New Haven | Health care | 501(c)(3) | 1966 | $4.88 billion | $5.63 billion | 2025-09 |
| Hartford Hospital | Hartford | Health care | 501(c)(3) | 1953 | $2.94 billion | $3.03 billion | 2025-09 |
| Americares Foundation Inc | Stamford | International, foreign affairs and national security | 501(c)(3) | 1979 | $1.85 billion | $372.5 million | 2025-06 |
| Yale New Haven Health Services Corporation | New Haven | Health care | 501(c)(3) | 1984 | $1.16 billion | $3.57 billion | 2025-09 |
| Saint Francis Hospital and Medical Center | Hartford | Health care | 501(c)(3) | 1946 | $989.2 million | $764.9 million | 2025-09 |
| Danbury Hospital | Danbury | Health care | 501(c)(3) | 1946 | $943.2 million | $971.3 million | 2025-09 |
| Bridgeport Hospital | Bridgeport | Health care | 501(c)(3) | 1934 | $925.3 million | $694.2 million | 2025-09 |
| Save the Children Federation Inc | Fairfield | International, foreign affairs and national security | 501(c)(3) | 1964 | $920.5 million | $548.8 million | 2024-12 |
| General Electric Company Insurance Plan Trust Co V A Diamante | Norwalk | 501(c)(9) | 1976 | $913.9 million | $18.7 million | 2024-12 | |
| Stamford Hospital | Stamford | Health care | 501(c)(3) | 1934 | $908.9 million | $1.32 billion | 2025-09 |
| Hospital of Central Connecticut at New Britain General and Bradley Me | New Britain | Health care | 501(c)(3) | 1937 | $814 million | $902.5 million | 2025-09 |
| Dalio Family Fund Inc | Westport | Human services | 501(c)(4) | 2019 | $806.9 million | $4.04 billion | 2024-12 |
| Hartford Healthcare Medical Group Specialists PLLC | Wethersfield | Mental health and crisis intervention | 501(c)(3) | 2020 | $771.6 million | $178.3 million | 2025-09 |
| Northeast Medical Group Inc | Stratford | 501(c)(3) | 1993 | $724.6 million | $147.9 million | 2025-09 | |
| Hartford Health Care Corporation | Hartford | Health care | 501(c)(3) | 1986 | $714.8 million | $3.45 billion | 2025-09 |
| SVMC Holdings Inc | Bridgeport | Health care | 501(c)(3) | 2019 | $707 million | $387.7 million | 2025-09 |
| Quinnipiac University | Hamden | Education | 501(c)(3) | 1938 | $658.6 million | $2.07 billion | 2025-06 |
| Connecticut Childrens Medical Center | Hartford | Health care | 501(c)(3) | 1956 | $639.6 million | $1.04 billion | 2025-09 |
| William W Backus Hospital | Norwich | Health care | 501(c)(3) | 1951 | $630.7 million | $1.08 billion | 2025-09 |
| Greenwich Hospital | Greenwich | Health care | 501(c)(3) | 1972 | $591.8 million | $910 million | 2025-09 |
| Sacred Heart University | Fairfield | Education | 501(c)(3) | 1964 | $575.7 million | $1.53 billion | 2025-06 |
| Middlesex Hospital | Middletown | Health care | 501(c)(3) | 1939 | $562.6 million | $657.4 million | 2025-09 |
| Fairfield University | Fairfield | Education | 501(c)(3) | 1943 | $558.6 million | $1.30 billion | 2025-06 |
| Lawrence and Memorial Hospital Inc | New London | Health care | 501(c)(3) | 1937 | $533.9 million | $482.3 million | 2025-09 |
| Midstate Medical Center | Meriden | Health care | 501(c)(3) | 1923 | $477.9 million | $552 million | 2025-09 |
| Nuvance Health Medical Practice CT Inc | Danbury | 501(c)(3) | 1987 | $456.6 million | $165.5 million | 2025-09 | |
| Wesleyan University | Middletown | Education | 501(c)(3) | 1943 | $443.2 million | $2.52 billion | 2025-06 |
| Norwalk Hospital Association | Norwalk | Health care | 501(c)(3) | 1943 | $439.3 million | $579.1 million | 2025-09 |
| University of New Haven | West Haven | Education | 501(c)(3) | 1949 | $392.2 million | $461.1 million | 2025-06 |
| Saint Marys Hospital Inc | Hartford | Health care | 501(c)(3) | 1977 | $374.4 million | $243.7 million | 2025-09 |
| The Mercy Hospital Inc | Hartford | Health care | 501(c)(3) | 1946 | $333.9 million | $130.8 million | 2025-06 |
| University of Hartford | West Hartford | Education | 501(c)(3) | 1957 | $305.6 million | $423.1 million | 2025-06 |
| Common Fund for Non-Profit Organizations | Wilton | Community improvement and capacity building | 501(c)(3) | 1970 | $288.7 million | $3.73 billion | 2025-06 |
| Trinity College | Hartford | Education | 501(c)(3) | 1981 | $281 million | $1.28 billion | 2025-06 |
| The Griffin Hospital | Derby | Health care | 501(c)(3) | 1937 | $273.7 million | $218.4 million | 2025-09 |
| Trinity Health of New England Provider Network Organization Inc | Hartford | 501(c)(3) | 1946 | $273.4 million | $37.3 million | 2025-09 | |
| Stamford Health Medical Group Inc | Stamford | Health care | 501(c)(3) | 2011 | $267.6 million | $88.6 million | 2025-09 |
| Hartford Healthcare Medical Group Inc | Wethersfield | Health care | 501(c)(3) | 2013 | $243.4 million | $138.8 million | 2025-09 |
| Charlotte Hungerford Hospital | Torrington | Health care | 501(c)(3) | 1942 | $224.7 million | $211.7 million | 2025-09 |
| Connecticut Childrens Specialty Group Inc | Hartford | Health care | 501(c)(3) | 1997 | $190.3 million | $56.8 million | 2025-09 |
| Achievement First Brooklyn Charter Schools | New Haven | Education | 501(c)(3) | 2008 | $187.2 million | $169.5 million | 2025-06 |
| Connecticut College | New London | Education | 501(c)(3) | 1935 | $185.8 million | $795.3 million | 2025-06 |
| Community Health Center Incorporated | Middletown | Health care | 501(c)(3) | 1972 | $181.2 million | $103.9 million | 2025-06 |
| Area Cooperative Educational Services | New Haven | Education | 501(c)(3) | 2024 | $176.8 million | $285.3 million | 2025-06 |
| Trinity Health of New England Corporation Inc | Hartford | Health care | 501(c)(3) | 1946 | $175.9 million | $657.4 million | 2025-09 |
| Bristol Hospital Incorporated | Bristol | Health care | 501(c)(3) | 1925 | $175.2 million | $106 million | 2024-09 |
| Hartford Healthcare at Home Inc | Wethersfield | Health care | 501(c)(3) | 1944 | $153.2 million | $115.6 million | 2025-09 |
| Coordinated Transportation Solutions Inc | Trumbull | Human services | 501(c)(3) | 1999 | $152.9 million | $20.3 million | 2025-09 |
| Ufcw and Participating Employers New England Health Fund | Westport | 501(c)(9) | 1959 | $151.9 million | $87.8 million | 2024-12 | |
| Tri State Joint Fund | Cheshire | 501(c)(9) | 1970 | $149.4 million | $36.5 million | 2025-06 | |
| Greater Hartford Gives Foundation | Hartford | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1942 | $144.4 million | $1.20 billion | 2024-12 |
| Hospital for Special Care | New Britain | Health care | 501(c)(3) | 1944 | $140.5 million | $183.5 million | 2025-03 |
| Greenwich Country Day School Inc | Greenwich | Education | 501(c)(3) | 1939 | $139.7 million | $457.4 million | 2025-06 |
| University of Connecticut Foundation Incorporated | Storrs | Education | 501(c)(3) | 1964 | $139.3 million | $951.5 million | 2025-06 |
| Day Kimball Healthcare Inc | Putnam | Health care | 501(c)(3) | 1937 | $136.5 million | $70 million | 2025-09 |
| Stamford Health Pharmacy LLC | Stamford | Health care | 501(c)(3) | 2024 | $133.7 million | $52 million | 2025-09 |
| Connecticut Foodshare Inc | Wallingford | 501(c)(3) | 1982 | $128.7 million | $55.2 million | 2025-06 | |
| Windham Community Memorial Hospital Inc | Willimantic | Health care | 501(c)(3) | 1938 | $127.8 million | $101.8 million | 2025-09 |
| The University of Bridgeport Inc | East Hartford | Education | 501(c)(3) | 2021 | $127.6 million | $80.7 million | 2025-06 |
| LMW Healthcare Inc | New London | Health care | 501(c)(3) | 2013 | $127.4 million | $89.5 million | 2025-09 |
| American Eagle Financial Credit Union Incorporated | East Hartford | Public and societal benefit | 501(c)(14) | 2015 | $127.1 million | $2.55 billion | 2024-12 |
| Hotchkiss School | Lakeville | Education | 501(c)(3) | 1925 | $126.4 million | $924.4 million | 2025-06 |
| CW Resources Inc | New Britain | Employment | 501(c)(3) | 1965 | $125.6 million | $66.8 million | 2025-06 |
| Taft School Corporation | Watertown | Education | 501(c)(3) | 1990 | $122.8 million | $530.6 million | 2025-06 |
| The Connecticut Institute for the Blind Inc | Hartford | Human services | 501(c)(3) | 1988 | $116.1 million | $97.9 million | 2025-06 |
| Yale University Retiree Health Benefits Coverage Trust | New Haven | Mutual and membership benefit | 501(c)(3) | 1997 | $114.9 million | $1.24 billion | 2025-06 |
| Cornell Scott Hill Health Corporation | New Haven | Health care | 501(c)(3) | 1972 | $114.5 million | $72.7 million | 2025-06 |
| Charityvest Inc | Fairfield | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $113.4 million | $103.4 million | 2024-12 |
| New England Electrical Workers Benefit Fund | Meriden | 501(c)(9) | 1971 | $106.3 million | $139.9 million | 2024-12 | |
| Gaylord Hospital Inc | Wallingford | Health care | 501(c)(3) | 1991 | $105.7 million | $135.1 million | 2025-09 |
| University of Saint Joseph | West Hartford | Education | 501(c)(3) | 1946 | $103.3 million | $165.9 million | 2025-06 |
| Ithuriel Fund | Old Greenwich | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $102.3 million | $246.6 million | 2025-12 |
| Wheeler Clinic Inc | Plainville | Mental health and crisis intervention | 501(c)(3) | 1968 | $102.1 million | $148.3 million | 2025-06 |
| Choate Rosemary Hall Foundation Incorporated | Wallingford | Education | 501(c)(3) | 1975 | $99.3 million | $925.9 million | 2025-06 |
| Brunswick School Inc | Greenwich | Education | 501(c)(3) | 1934 | $95.3 million | $509.6 million | 2025-06 |
| Connecticut State Employees Credit Union Inc | Hartford | 501(c)(14) | 1976 | $92.7 million | $2.64 billion | 2025-12 | |
| Riverbend Medical Group Inc | Hartford | Health care | 501(c)(3) | 2017 | $89.2 million | $6.8 million | 2025-06 |
| Knights of Columbus Charitable Fund Inc | New Haven | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $85.5 million | $127.1 million | 2024-12 |
| Food Rescue Us Inc | Stamford | Food, agriculture and nutrition | 501(c)(3) | 2011 | $84.3 million | $1.2 million | 2025-12 |
| Community Health Network of Connecticut Inc | Wallingford | Health care | 501(c)(4) | 1998 | $84.1 million | $56.6 million | 2024-12 |
| Community Health Resources Inc | Windsor | Mental health and crisis intervention | 501(c)(3) | 1966 | $82.5 million | $46.6 million | 2025-06 |
| International Union of Operating Engineers Welfare Fund 478 | Hamden | 501(c)(9) | 1952 | $81.9 million | $137.4 million | 2024-12 | |
| Loomis Institute | Windsor | Education | 501(c)(3) | 1938 | $80.5 million | $564.6 million | 2025-06 |
| Hartford Healthcare Endowment LLC | Hartford | 501(c)(3) | 2016 | $80.3 million | $2.37 billion | 2025-09 | |
| Johnson Memorial Hospital Inc | Hartford | Health care | 501(c)(3) | 2016 | $79.2 million | $93.5 million | 2025-09 |
| The Jewish Home for the Elderly of Fairfield County Inc | Bridgeport | Health care | 501(c)(3) | 1968 | $78 million | $467.7 million | 2025-09 |
| Fair Haven Community Health Clinic Inc | New Haven | Health care | 501(c)(3) | 1972 | $77.9 million | $74.7 million | 2025-06 |
| Capital Area Health Consortium Inc | Farmington | 501(c)(3) | 1975 | $75.1 million | $8.7 million | 2025-06 | |
| Financial Accounting Foundation | Norwalk | Public and societal benefit | 501(c)(3) | 1972 | $74.9 million | $162.7 million | 2025-12 |
| Sikorsky Financial Credit Union Inc | Stratford | 501(c)(14) | $73.1 million | $1.40 billion | 2025-12 | ||
| Achievement First Rhode Island | New Haven | Education | 501(c)(3) | 2014 | $71 million | $108.1 million | 2025-06 |
| Continuum of Care Inc | New Haven | 501(c)(3) | 1967 | $68.5 million | $25.1 million | 2025-06 | |
| Ability Beyond Disability Inc | Bethel | Human services | 501(c)(3) | 1967 | $68 million | $33.7 million | 2025-06 |
| Silver Hill Hospital Inc | New Canaan | Mental health and crisis intervention | 501(c)(3) | 1937 | $67.8 million | $96.4 million | 2024-12 |
| Masonicare Health Center | Wallingford | Human services | 501(c)(3) | 1943 | $64.3 million | $36.3 million | 2025-09 |
| Raytheon Welfare Benefits Trust | Farmington | Mutual and membership benefit | 501(c)(9) | 1997 | $64 million | $3.2 million | 2024-12 |
| Connecticut Laborers Health Fund | West Haven | 501(c)(9) | 1954 | $63.3 million | $80.8 million | 2024-12 | |
| National Shooting Sports Foundation Inc | Shelton | 501(c)(6) | 1971 | $63 million | $90.1 million | 2025-03 | |
| The Village for Families & Children Inc | Hartford | Human services | 501(c)(3) | 1953 | $62.5 million | $169 million | 2025-06 |
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.