Top-Rated Nonprofits in Connecticut 2026
Connecticut has 16 nonprofits with $17.6B in combined revenue. The top-rated organization is Hartford Hospital with an Efficiency Score of 91/100.
Connecticut has 16 nonprofits in the IRS Form 990 dataset ranked here by efficiency score. The NonprofitTruth nonprofit efficiency rubric combines financial health / operating reserves (40%), revenue-growth consistency (35%), and officer compensation relative to revenue (25%) into a 0-100 composite.
Reading the ranking: top of the list typically combines healthy operating reserves (the highest-weighted factor) with stable multi-year revenue and reasonable officer compensation. Large hospital and university systems often appear near the top in any state — their scale gives them deep balance sheets and steady revenue. Each nonprofit links to its full Form 990 profile. For donors trying to choose between organizations, the efficiency grade is a useful triage — but the underlying reserve position, the multi-year revenue trend, and the officer-comp ratio matter more than the composite letter on any individual decision.
Top 16 Nonprofits in Connecticut
| # | Organization | Category | Revenue | CEO Pay | Score |
|---|---|---|---|---|---|
| 1 | Hartford Hospital | Health | $2.6B | $426K | A (91) |
| 2 | Yale New Haven Hospital | Health | $4.2B | $10.6M | A (88) |
| 3 | University Of New Haven | Education | $344.7M | $3.6M | A (82) |
| 4 | Achievement First Brooklyn Charter Schools | Education | $181.5M | $0 | B (76) |
| 5 | Sacred Heart University | Education | $509.0M | $4.5M | B (74) |
| 6 | Area Cooperative Educational Services | Education | $128.4M | $1.0M | B (74) |
| 7 | Sea Research Foundation Inc | Environment & Animals | $32.6M | $657K | B (74) |
| 8 | University Of Hartford | Education | $269.3M | $4.8M | B (65) |
| 9 | Fairfield University | Education | $424.5M | $5.6M | C (62) |
| 10 | Boehringer Ingelheim Cares Foundation Inc | Education | $1.3B | $0 | C (60) |
| 11 | Horace Bushnell Memorial Hall Corporation | Arts, Culture & Humanities | $26.1M | $1.3M | C (57) |
| 12 | Yale University | Education | $6.3B | $12.9M | C (56) |
| 13 | Trinity College | Education | $240.4M | $2.5M | C (56) |
| 14 | Quinnipiac University | Education | $541.8M | $1.7M | C (54) |
| 15 | Connecticut College | Education | $182.1M | $1.7M | D (49) |
| 16 | Wesleyan University | Education | $289.4M | $6.1M | D (39) |
Nonprofit financial data for Connecticut is sourced from IRS Form 990 filings, which all tax-exempt organizations must file annually.
Frequently Asked Questions
Hartford Hospital is the top-rated nonprofit in Connecticut with an Efficiency Score of 91/100 (Grade A) and $2.6B in annual revenue.
Connecticut has 16 nonprofits in our database with a combined $17.6B in total revenue.
The Efficiency Score (0-100, A-F) measures a nonprofit's financial structure based on financial health / operating reserves (40%), revenue-growth consistency (35%), and current-officer compensation relative to revenue (25%), all from IRS Form 990 data. Higher scores indicate stronger financial structure. It does not include a program-spending ratio, which our data source does not provide.
Efficiency Score: financial health / operating reserves (40%), revenue-growth consistency (35%), current-officer compensation ratio (25%). No program-spending ratio is included — total program service expenses are not available from the ProPublica Nonprofit Explorer feed.