Largest by Revenue Nonprofits in Connecticut

Largest by Revenue nonprofit rankings for Connecticut. 100 organizations with $17.2B in combined revenue. Updated 2026 IRS 990 data.

100Organizations
$17.2BTotal Revenue
$27.5BTotal Assets
78/100Avg Score

Largest by Revenue Rankings for Connecticut (100)

#OrganizationCityRevenueAssetsScore
1 Common Fund For Non Profit Organizations Wilton $3.0B $3.6B
2 Citibank Na Employees Association Stamford $2.4B $54.0M 30/100
3 Boehringer Ingelheim Cares Foundation Inc Ridgefield $1.7B $251.9M
4 Yale New Haven Health Services Corporation New Haven $1.4B $3.5B 85/100
5 Dalio Foundation Inc Westport $1.0B $1.7B
6 General Electric Company Insurance Plan Trust Co V A Diamante Norwalk $916.3M $18.7M
7 Hartford Health Care Corporation Hartford $748.1M $3.4B 75/100
8 Hartford Healthcare Medical Group Specialists Pllc Wethersfield $695.3M $158.7M
9 William W Backus Hospital Norwich $589.5M $990.1M
10 The Mercy Hospital Inc Hartford $337.4M $205.3M
11 Stamford Health Medical Group Inc Stamford $252.1M $79.6M
12 Hartford Healthcare Medical Group Inc Wethersfield $223.9M $147.7M
13 Western Connecticut Health Network Investments Llc Danbury $193.0M $381.6M
14 Achievement First Brooklyn Charter Schools New Haven $191.7M $166.1M 90/100
15 Alexion Access Foundation New Haven $144.8M $1 85/100
16 American Eagle Financial Credit Union Incorporated East Hartford $127.9M $2.6B
17 Seedlings Foundation Branford $96.6M $215.4M
18 Hartford Healthcare Endowment Llc Hartford $92.6M $2.2B
19 Mcchord Foundation Norwalk $88.0M $182.0M
20 Low Road Foundation Sharon $87.8M $217.1M 65/100
21 Ll Global Inc Windsor $87.4M $84.1M
22 Financial Accounting Foundation Norwalk $86.1M $161.1M
23 F B Heron Foundation New Haven $78.4M $349.3M 90/100
24 Capital Area Health Consortium Inc Farmington $75.2M $8.7M
25 Food Rescue Us Inc Stamford $75.2M $804K
26 Johnson Memorial Hospital Inc Hartford $74.8M $91.1M
27 Sikorsky Financial Credit Union Inc Stratford $69.7M $1.3B
28 Achievement First Rhode Island New Haven $65.4M $92.9M
29 The Grossman Family Foundation Cos Cob $61.8M $142.5M
30 Belgian American Educational Foundation Inc New Haven $60.6M $218.7M 95/100
31 Melville Charitable Trust Inc New Haven $59.5M $130.7M
32 Cohen Veterans Network Inc Stamford $55.9M $28.5M
33 1772 Foundation Inc Pomfret Ctr $54.6M $81.1M 85/100
34 Connecticut Foodshare Inc Wallingford $52.4M $22.5M 85/100
35 Scus Head Start Programs Inc Fairfield $52.2M $8.9M
36 St Lukes Foundation Inc New Canaan $45.6M $136.7M
37 Jane And Daniel Och Family Foundation Greenwich $45.5M $570.1M
38 Church Home Of Hartford Bloomfield $45.3M $137.3M
39 Planned Parenthood Of Southern New England Inc New Haven $44.7M $81.0M
40 Cardinal Bay Inc Shelton $44.2M $199.8M
41 Goodwill Industries Of Southern New England Inc North Haven $43.6M $57.2M
42 Bursky Family Foundation Greenwich $42.8M $25.3M
43 Ccsu Foundation Inc New Britain $42.3M $110.1M
44 Sandy Hook Promise Foundation Newtown $41.7M $36.4M
45 Greater Hartford Community Foundation Inc Hartford $40.9M $11.9M
46 The Workplace Inc Bridgeport $39.4M $10.6M 85/100
47 Mclean Affiliates Inc Simsbury $39.1M $103.5M
48 Apt Foundation Inc New Haven $39.0M $30.2M
49 Connecticut Childrens Foundation Inc Hartford $38.4M $201.5M 85/100
50 Staywell Health Care Inc Waterbury $36.9M $22.1M
51 Michael And Carol Lowenstein Foundation Inc Greenwich $34.1M $73.8M 90/100
52 Bhcare Inc North Haven $32.6M $10.6M 85/100
53 S & L Marx Foundation Inc Greenwich $32.3M $83.1M 85/100
54 Boys And Girls Village Inc Milford $30.5M $48.1M 85/100
55 Buildon Inc Stamford $30.2M $21.8M
56 Covenant Living Of Cromwell Inc Cromwell $29.9M $97.7M 65/100
57 Jewish Foundation Of Greater New Haven Inc Woodbridge $29.3M $82.0M
58 American Pet Products Association Inc Stamford $28.9M $30.2M 85/100
59 The Perrin Family Foundation Old Greenwich $28.0M $23.0M
60 Deloitte Foundation Stamford $28.0M $51.4M 95/100
61 Alex G Nason Foundation Inc Stamford $27.7M $3.6M
62 Dorothy B Davis Foundation Fairfield $27.6M $31.2M
63 Brothers Brook Foundation Stamford $27.5M $90.9M
64 Nfa Foundation Inc Norwich $26.9M $85.8M 75/100
65 Network Inc Andover $26.9M $17.8M
66 Generations Family Health Center Inc Willimantic $25.8M $27.8M
67 Lyford Cay Foundation Inc Greenwich $25.7M $39.6M
68 Danbury Hospital & New Milford Hospital Foundation Inc Danbury $25.1M $190.4M
69 Child And Family Agency Of Southeastern Connecticut Inc New London $25.0M $11.1M
70 Imran Khan Cancer Appeal Inc Farmington $24.4M $15.3M 92/100
71 American Savings Foundation Inc New Britain $23.7M $98.1M
72 Wee Burn Country Club Inc Darien $23.6M $28.7M
73 The Josef And Anni Albers Foundation Inc Bethany $23.4M $27.2M
74 New York State Electric And Gas Co Veba Trust Orange $23.1M $9.5M 40/100
75 Woodway Country Club Incorporated Darien $22.8M $36.0M
76 Foundations In Education Inc Shelton $22.7M $59.8M
77 The Caring Community Of Connecticut Inc Colchester $22.5M $10.7M 85/100
78 The Childrens Investment Fund Foundation West Hartford $22.4M $147.5M
79 Connecticut Center For Advanced Technology Inc East Hartford $22.0M $23.8M 80/100
80 Hartford Healthcare Senior Services Inc Southington $21.9M $13.2M 85/100
81 Norwalk Hospital Foundation Inc Norwalk $21.9M $164.2M 75/100
82 Bridgeport Hospital Foundation Inc Bridgeport $21.9M $138.9M 85/100
83 Greenwich Country Club Greenwich $21.8M $48.0M
84 Jeffrey P Ossen Family Foundation West Hartford $21.6M $18.0M
85 Hd Holding Corporation Manchester $21.4M $47.1M 65/100
86 Western Connecticut Health Network Inc Danbury $21.3M $703.3M 75/100
87 Stamford Health Inc Stamford $21.2M $144.6M 75/100
88 Coast Guard Foundation Inc Stonington $20.9M $25.6M
89 Fairview Country Club Greenwich $20.8M $12.9M 45/100
90 Western Connecticut Health Network Affiliates Inc Danbury $20.6M $16.8M 75/100
91 The Zac Foundation For Childrens Safety Fairfield $20.5M $20.6M
92 Worldquant Foundation Old Greenwich $20.3M $22.3M
93 World Health Clinicians Incorporated Norwalk $20.1M $10.2M
94 Knights Of Columbus Charities Usa Inc New Haven $20.1M $93.4M
95 Stepping Stones Museum For Children Inc Norwalk $19.9M $14.7M
96 Patterson Club Inc Fairfield $19.8M $32.2M
97 Innis Arden Golf Club Inc Old Greenwich $19.3M $54.9M
98 Day Kimball Medical Group Inc Putnam $19.2M $2.7M
99 Brooklawn Country Club Inc Fairfield $19.1M $26.3M
100 Achievement First Hartford Academy Inc New Haven $18.9M $7.0M

Frequently Asked Questions

What are the largest by revenue nonprofits in Connecticut?

There are 100 nonprofits in Connecticut ranked by largest by revenue, with $17.2B in combined annual revenue.

How are Connecticut nonprofit rankings determined?

Rankings are based on the latest IRS 990 filing data. The biggest nonprofits ranked by total annual revenue. Each organization is ranked relative to other Connecticut nonprofits.

How do Connecticut nonprofits compare nationally?

Connecticut has 100 organizations in this ranking category. View the national largest by revenue rankings for broader context.

Where can I find more nonprofit data for Connecticut?

Visit our Connecticut state page for a complete overview of all nonprofits, or explore specific categories and cities within Connecticut.

Other Rankings for Connecticut

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