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Nonprofits in Connecticut

What the IRS records say about tax-exempt organizations in Connecticut.

Tax-exempt organizations
23,675
Revenue in a year
$70.3 billion
on 9,899 e-filed returns
Assets
$218.5 billion
Employees
364,219
People paid $1 million or more
169
Typical top pay
$104,695
median, best-paid person per organization

Connecticut rankings

Tax-exempt organizations
23,675
Of which 501(c)(3)
19,371
File the 990-N (receipts ≤ $50,000)
11,411
File Form 990 or 990-EZ
7,029
Filed a 990-N (latest e-Postcard on record)
14,742
Exemption automatically revoked (all years)
11,609

Largest nonprofits in Connecticut by revenue

Top 5s in Connecticut

From each organization's latest e-filed Form 990, 990-EZ or 990-PF.

Highest-paid people

Compensation from the organization and related organizations, including other pay

  1. 1Matthew S T MendelsohnChief Investment Officer · Yale University · NEW HAVEN, CT$5.4M
  2. 2Christopher O'ConnorCEO/Trustee (Current Yr Comp) · Yale New Haven Health Services Corporation · NEW HAVEN, CT$5M
  3. 3Jeffrey FlaksDirector, President & CEO · Hartford Health Care Corporation · HARTFORD, CT$4.8M
  4. 4John V RicottaVice President (Effective 5/20/25) · 5C Corporation · NEW HAVEN, CT$4.6M
  5. 5Amelia ChivettaManaging Director, Investments · Yale University · NEW HAVEN, CT$4.6M
The full top 10 →

Most raised in gifts and grants

Contributions, gifts and grants received in the year

  1. 1Boehringer Ingelheim Cares Foundation IncRIDGEFIELD, CT · 990-PF, year ended Dec 2025$2.1B
  2. 2Americares Foundation IncSTAMFORD, CT · 990, year ended Jun 2025$1.8B
  3. 3Peter and Carmen Lucia Buck Foundation IncMYSTIC, CT · 990-PF, year ended Jun 2025$1.8B
  4. 4Yale UniversityNEW HAVEN, CT · 990, year ended Jun 2025$1.5B
  5. 5Save the Children Federation IncFAIRFIELD, CT · 990, year ended Dec 2024$905.7M
The full top 10 →

Largest reserves

Net assets (fund balance) at year end

  1. 1Yale UniversityNEW HAVEN, CT · 990, year ended Jun 2025$48.5B
  2. 2Dalio Family Fund IncWESTPORT, CT · 990, year ended Dec 2024$4B
  3. 3Common Fund for Non-Profit OrganizationsWILTON, CT · 990, year ended Jun 2025$3.6B
  4. 4Yale New Haven HospitalNEW HAVEN, CT · 990, year ended Sep 2025$3.4B
  5. 5Knights of ColumbusNEW HAVEN, CT · 990, year ended Dec 2024$3.1B
The full top 10 →

Biggest employers

Employees reported for the calendar year

  1. 1Yale UniversityNEW HAVEN, CT · 990, year ended Jun 202535,714
  2. 2Yale New Haven HospitalNEW HAVEN, CT · 990, year ended Sep 202518,097
  3. 3Hartford HospitalHARTFORD, CT · 990, year ended Sep 202511,233
  4. 4Trinity Health of New England Corporation IncHARTFORD, CT · 990, year ended Sep 20259,047
  5. 5Sacred Heart UniversityFAIRFIELD, CT · 990, year ended Jun 20255,843
The full top 10 →

By city

By category

Category (NTEE)Organizations
Education2,253
Arts, culture and humanities1,534
Philanthropy, voluntarism and grantmaking foundations1,495
Human services1,316
Recreation and sports1,271
Community improvement and capacity building653
Religion-related557
Health care517
Animal-related476
Youth development449
Environment413
Housing and shelter341
Public and societal benefit338
Public safety, disaster preparedness and relief241
Employment231
International, foreign affairs and national security223
Mental health and crisis intervention221
Mutual and membership benefit185
Food, agriculture and nutrition172
Voluntary health associations and medical disciplines167
Civil rights, social action and advocacy109
Crime and legal-related103
Unknown88
Medical research87
Science and technology70
Social science15