Most Efficient Nonprofits in Connecticut

Most Efficient nonprofit rankings for Connecticut. 100 organizations with $679.6M in combined revenue. Updated 2026 IRS 990 data.

100Organizations
$679.6MTotal Revenue
$1.6BTotal Assets
88/100Avg Score

Most Efficient Rankings for Connecticut (100)

#OrganizationCityRevenueAssetsScore
1 Raytheon Co Employee Disability Trust Farmington $16.2M $64.1M 95/100
2 Leon Lowenstein Foundation Inc Madison $13.2M $199.5M 95/100
3 E Matilda Ziegler Fdn For The Blind Greenwich $10.3M $10.3M 95/100
4 Area 11 Connecticut General Service Committee Of Alcoholics Anonymous Meriden $167K $95K 95/100
5 Putnam Bank Foundation Putnam $332K $2.4M 95/100
6 Andrew J & Joyce D Mandell Family Foundation Inc Newington $13.4M $6.1M 75/100
7 Ptsa Connecticut Inc Easton Pta Easton $0 $0 75/100
8 Paul H Gesswein & Co Health Plan Bridgeport $632K $4K 60/100
9 Passion 4 Paws Inc Dayville $135K $2K 75/100
10 Hartford Healthcare Senior Services Inc Southington $21.9M $13.2M 85/100
11 Deloitte Foundation Stamford $28.0M $51.4M 95/100
12 Trust Agreement For Post Retirement Medical Plan For Union Employees O Orange $7.6M $3.7M 45/100
13 Independence Unlimited Inc Hartford $444K $583K 90/100
14 The Ruth And Robert L Newman Foundation Greenwich $87K $570K 85/100
15 Eastchester Teachers Trust Fund Wallingford $753K $191K 85/100
16 Tuckahoe Teachers Association Trust Fund Wallingford $347K $180K 90/100
17 James P & Genevieve M Mclaughlin Family Foundation Farmington $1.1M $2.5M 90/100
18 Mayer Family Foundation Greenwich $8.4M $3.6M 90/100
19 Zimmel Family Foundation Stamford $1.7M $7.2M 85/100
20 David & Tricia Rogers Foundation Darien $2.5M $19.6M 90/100
21 Mcinerney Family Foundation Westport $12.2M $9.3M 95/100
22 Walsh Family Foundation Inc Stamford $412K $199K 92/100
23 Harriet & Fred M Cartoun Foundation Inc Newtown $102K $646K 90/100
24 Axe Houghton Foundation Fairfield $2.6M $8.0M 95/100
25 Lee Shubert Uw Tr Fbo Shubert Foundation Pomfret $302K $4.2M 85/100
26 Connecticut Jr Huskies Vernon $342K $189K 92/100
27 Howard And Bess Chapman Charitable Corporation West Hartford $275K $2.5M 85/100
28 David & Karen Pecker Foundation Greenwich $6.2M $5.5M 95/100
29 Newtown Babe Ruth Softball League Inc Newtown $104K $38K 90/100
30 S & L Marx Foundation Inc Greenwich $32.3M $83.1M 85/100
31 David And Geri Epstein Private Foundation Dated 9 13 00 Westport $14.4M $31.5M 90/100
32 Addison Hines Charitable Tr Oxford $4.9M $15.9M 85/100
33 Marie Fauth Charitable Tr Greenwich $2.9M $6.9M 95/100
34 Margaret Dunn Smith Family Foundation Inc Morris $170K $983K 90/100
35 David And Gwen Baker Familyfoundation Inc Westport $62K $1.0M 90/100
36 Dimatteo Family Charitable Foundation Inc Shelton $191K $8K 90/100
37 Winsted Playground Association Colebrook $436K $1.8M 98/100
38 The@Hilbert And Shirley Hendel Family Foundation Norwich $247K $735K 85/100
39 Michael And Carol Lowenstein Foundation Inc Greenwich $34.1M $73.8M 90/100
40 The Per And Astrid Heidenreich Family Foundation Greenwich $13.6M $18.4M 90/100
41 Robert F O Keefe And Maureen T O Keefe Family Foundation Trumbull $135K $1.8M 92/100
42 Alexion Access Foundation New Haven $144.8M $1 85/100
43 Price Choppers Golub Foundation Torrington $400K $347K 85/100
44 Mohawak Northeast Inc Health & Welfare Fund Plantsville $7.2M $312K 75/100
45 Jerrold And Sally Fine Foundation Inc Darien $38K $1.1M 85/100
46 Connecticut Environment Council Inc North Haven $150K $40K 75/100
47 Connecticut Parent Advocacy Center Inc New London $1.0M $1.1M 85/100
48 Kontogouris Djokic Foundation Weston $586K $2.8M 85/100
49 Lebanon Volunteer Fire Department Lebanon $627K $1.3M 95/100
50 Western Connecticut Chapter National Railway Historical Societ Norwalk $21K $76K 92/100
51 U A Local 716 Apprenticeship And Training Trust Wallingford $330K $802K 85/100
52 Connecticut River Lacrosse Club Inc Old Lyme $101K $96K 90/100
53 National Mental Health Corps Inc Newtown $3.7M $1.6M 95/100
54 Plymouth Community Food Pantry Terryville $165K $140K 92/100
55 Methodist Fam Center Preschool Inc Darien $1.1M $893K 92/100
56 Music For Youth Inc Westport $64K $345K 92/100
57 Southington Soccer Club Southington $259K $149K 92/100
58 Connecticut Association For Behavior Analysis Inc Prospect $168K $133K 92/100
59 Maud Glover Folsom Foundation Inc Simsbury $3.3M $12.2M 95/100
60 Bertram Steinman Family Foundation Inc Westport $277K $1.9M 85/100
61 Friends Of Ridgefield Community Programs Inc Ridgefield $217K $12K 85/100
62 Friends Of The Westport Center For Senior Activities Inc Westport $57K $229K 92/100
63 Savings Bank Of Danbury Foundation Inc Danbury $667K $3.4M 95/100
64 Epoch Arts Inc East Hampton $175K $497K 95/100
65 Salisbury Housing Committee Inc Salisbury $3.6M $8.9M 92/100
66 Belgian American Educational Foundation Inc New Haven $60.6M $218.7M 95/100
67 Religious Education Association Inc New Haven $108K $401K 95/100
68 Camp Sloane Incorporated Lakeville $3.1M $4.0M 95/100
69 Covenant Living Of Cromwell Inc Cromwell $29.9M $97.7M 65/100
70 Harteveldt Foundation Inc Greenwich $299K $2.0M 92/100
71 Pound Ridge Tennis Club Incorporated Stamford $306K $641K 92/100
72 General William Mayer Foundation Inc West Hartford $809K $1.9M 85/100
73 Pet Assistance Inc New Preston $51K $79K 92/100
74 The Hygeia Foundation For Health Science And The Environment Inc New Canaan $442K $721K 85/100
75 Adolph And Ruth Schnurmacher Foundation Inc Westport $14.4M $17.9M 85/100
76 Morris S & Florence H Bender Foundation Inc Greenwich $630K $3.0M 85/100
77 Great Mountain Forest Corporation Norfolk $2.5M $13.4M 95/100
78 Edward & Jeanne Epstein Foundation New Canaan $10K $67K 85/100
79 Pelham Teachers Association Trust Fund Wallingford $417K $532K 92/100
80 The Chi Rho Fund Inc Stamford $227K $356K 85/100
81 The Oherron Family Foundation Stamford $299K $6.5M 75/100
82 Emwiga Foundation Greenwich $7.1M $13.3M 92/100
83 The Ae Family Foundation Greenwich $7.0M $13.4M 95/100
84 Royce Family Fund Inc Greenwich $4.7M $97.4M 92/100
85 The Stephen And Suzanne Weiss Foundation Inc Greenwich $169K $403K 75/100
86 Seevers Family Foundation Westport $2.1M $1.8M 85/100
87 Donald C Brace Foundation C/O Cummings & Lockwood South Windsor $3.0M $17.9M 85/100
88 Dahesh Museum Of Art Greenwich $4.6M $44.2M 95/100
89 Keefe Family Foundation Greenwich $2.3M $4.2M 85/100
90 Imran Khan Cancer Appeal Inc Farmington $24.4M $15.3M 92/100
91 F B Heron Foundation New Haven $78.4M $349.3M 90/100
92 Lenore & Howard Klein Foundation Inc Greenwich $164K $2.7M 85/100
93 A Gift Of Life The Heart And Lung Transplant Support Group Inc Shelton $1.1M $582K 92/100
94 Aronson Family Foundation Westport $3.2M $10.6M 90/100
95 Amy E Shapiro Scholarship Foundation Inc Stamford $21K $258K 92/100
96 Fracture Service Fund Inc Darien $122K $786K 92/100
97 Volunteer Health Program Ltd Greenwich $416K $96K 85/100
98 Oconnell Family Foundation Inc Greenwich $4.2M $2.4M 75/100
99 Karlson Family Foundation Trumbull $60K $1.6M 85/100
100 Ptm Charitable Foundation Southport $460K $1.6M 92/100

Frequently Asked Questions

What are the most efficient nonprofits in Connecticut?

There are 100 nonprofits in Connecticut ranked by most efficient, with $679.6M in combined annual revenue.

How are Connecticut nonprofit rankings determined?

Rankings are based on the latest IRS 990 filing data. Nonprofits with the best program expense ratios. 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 most efficient 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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