Skip to content
American Factbook
Menu

Nonprofits in Connecticut

The IRS recognises 23,649 tax-exempt organizations with a Connecticut address, rank 28 of 51. 2,442 of them have a Form 990 on record.

American Factbook Research

At a glance

23,649
Organizations recognised
Registration, not activity.
19,261
Recognised under 501(c)(3)
The charitable subsection.
2,442
With a Form 990 on record
The only organizations with financial figures here.
643.5
Per 100,000 residents
Census resident population as the denominator.
$63,314,043,794
Revenue reported
Summed across filings, each for a different year.
1.2%
Share of all US organizations
Of 1,964,958 recognised nationally.

Taken from the IRS on September 19, 2026. Address of record, which is not necessarily where an organization operates.

Largest by revenue

2 more columns on a wider screen

Organizations in Connecticut by total revenue on their most recent Form 990
RankOrganizationRevenue
1YALE UNIVERSITY$6,841,256,079
2YALE NEW HAVEN HOSPITAL$4,883,266,662
3HARTFORD HOSPITAL$2,936,696,079
4BOEHRINGER INGELHEIM CARES FOUNDATION INC$2,057,266,961
5PETER AND CARMEN LUCIA BUCK FOUNDATION INC$1,918,181,862
6AMERICARES FOUNDATION INC$1,560,789,806
7YALE NEW HAVEN HEALTH SERVICES CORPORATION$1,157,413,267
8SAINT FRANCIS HOSPITAL AND MEDICAL CENTER$989,157,513
9DANBURY HOSPITAL$943,179,862
10BRIDGEPORT HOSPITAL$925,337,466
11SAVE THE CHILDREN FEDERATION INC$920,455,828
12GENERAL ELECTRIC COMPANY INSURANCE PLAN TRUST CO V A DIAMANTE$913,945,910
13STAMFORD HOSPITAL$908,887,549
14HOSPITAL OF CENTRAL CONNECTICUT AT NEW BRITAIN GENERAL AND BRADLEY ME$813,961,965
15DALIO FAMILY FUND INC$806,892,040

The fifteen largest with a filing on record. Organizations without one are counted above but have no figures to rank.

Largest by assets

2 more columns on a wider screen

Organizations in Connecticut by assets
RankOrganizationAssets
1YALE UNIVERSITY$55,210,972,740
2YALE NEW HAVEN HOSPITAL$5,630,110,148
3DALIO FAMILY FUND INC$4,039,494,510
4YALE NEW HAVEN HEALTH SERVICES CORPORATION$3,566,037,960
5COMMON FUND FOR NON-PROFIT ORGANIZATIONS$3,563,355,822
6HARTFORD HEALTH CARE CORPORATION$3,453,251,725
7HARTFORD HOSPITAL$3,028,312,938
8PETER AND CARMEN LUCIA BUCK FOUNDATION INC$2,838,832,516
9QUINNIPIAC UNIVERSITY$2,068,663,957
10DALIO FOUNDATION INC$1,665,091,766

Book value at the end of the year, which is what all three forms report.

Highest reported compensation

2 more columns on a wider screen

Organizations in Connecticut by reported compensation
RankOrganizationReported compensation
1DANBURY HOSPITAL$5,943,362
2YALE NEW HAVEN HEALTH SERVICES CORPORATION$4,968,969
3YALE NEW HAVEN HOSPITAL$4,968,969
4HARTFORD HEALTH CARE CORPORATION$4,799,936
5HARTFORD HOSPITAL$4,799,936
6YALE UNIVERSITY$4,443,090
7COMMON FUND FOR NON-PROFIT ORGANIZATIONS$3,873,522
8GREENWICH HOSPITAL$3,144,397
9NORTHEAST MEDICAL GROUP INC$3,144,397
10STAMFORD HOSPITAL$2,305,770

The largest amount an organization here reported paying one person, as reported.

What they do

Organizations in Connecticut by NTEE major group
CategoryOrganizations
Philanthropy, Voluntarism and Grantmaking Foundations350
Education279
Human Services228
Health Care163
Arts, Culture and Humanities121
Housing and Shelter83
Community Improvement and Capacity Building63
Recreation and Sports50
Environment48
Mental Health and Crisis Intervention47

Organizations the IRS never classified do not appear here. A code is assigned at registration and rarely updated, so it describes what an organization said it would do.

Nearest by count

States either side of Connecticut by number of organizations
RankStateOrganizations
27Louisiana23,926
29Kentucky22,690

Connecticut elsewhere on the Factbook

  • Reported crimeCrime and justice

    Offenses reported to police by type, the trend, and the reporting coverage.

  • Cities by violent crime rateCrime and justice

    What each agency serving 25,000 or more reported, ranked. Agency populations overlap, so these do not add up to the state.

  • Prison populationCrime and justice

    People held under the state’s correctional authority, and the imprisonment rate. A different publisher counting a different thing.

  • Arrests by race, sex and ageCrime and justice

    Arrests as the FBI’s participating agencies reported them, with what the figures can and cannot support at the top.

  • Hate crimeCrime and justice

    Incidents reported to the FBI by bias motivation, as counts — the collection publishes no participation share, so there is no rate to compare states on.

  • Federal obligationsFederal spending

    What federal agencies obligated against a place of performance in the state, per resident and by agency.

  • Payments to doctorsHealth

    What drug and device companies reported paying doctors with a practice address in the state, and the largest recipients.

  • The Connecticut Factbook entryAcross the Factbook

    Every measure the Factbook publishes for this state in one place, each with where it ranks among the others and the record it came from.

The immigration hub has no page for a state: CBP publishes by sector and field office, which are its own areas of responsibility rather than a geography, so assigning them to states would be a claim the data does not make. Immigration and the border.

Compared with Kentucky.

Full rankings: largest by revenue, largest by assets, and largest grantmakers, and highest reported officer compensation. All organizations: nonprofits.

What this page cannot show

  • The state is the organization’s address of record with the IRS. A national charity registered here operates elsewhere too.
  • Churches need not apply for recognition, so they are under-represented, and the ones here are those that chose to apply.
  • Financial figures exist only for organizations with a Form 990 on record, and each describes whichever year that organization last reported.

Full method at methodology.

Sources

Data retrieved