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US state · CT
Nonprofits in Connecticut
Givalgo Discover tracks 15,890 active US nonprofits with their principal IRS-recorded address in Connecticut. Sorted by latest reported revenue; click through for full Form 990 diligence on any organisation, or jump to a specific sector below.
Top 50 by reported revenue
From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.
| # | Organisation | Sector | Revenue |
|---|---|---|---|
| 1 | YALE UNIVERSITY EIN 06-0646973 | Education | $8.5B |
| 2 | YALE NEW HAVEN HOSPITAL EIN 06-0646652 | Health | $4.9B |
| 3 | HARTFORD HOSPITAL EIN 06-0646668 | Health | $2.9B |
| 4 | AMERICARES FOUNDATION INC EIN 06-1008595 | International | $1.9B |
| 5 | YALE NEW HAVEN HEALTH SERVICES CORPORATION EIN 22-2529464 | Health | $1.2B |
| 6 | SAINT FRANCIS HOSPITAL AND MEDICAL CENTER EIN 06-0646813 | Health | $989.2M |
| 7 | DANBURY HOSPITAL EIN 06-0646597 | Health | $943.2M |
| 8 | BRIDGEPORT HOSPITAL EIN 06-0646554 | Health | $925.3M |
| 9 | SAVE THE CHILDREN FEDERATION INC EIN 06-0726487 | International | $920.5M |
| 10 | GENERAL ELECTRIC COMPANY INSURANCE PLAN TRUST CO V A DIAMANTE EIN 51-0169382 | Uncategorized | $913.9M |
| 11 | STAMFORD HOSPITAL EIN 06-0646917 | Health | $908.9M |
| 12 | HOSPITAL OF CENTRAL CONNECTICUT AT NEW BRITAIN GENERAL AND BRADLEY ME EIN 06-0646768 | Health | $814.0M |
| 13 | DALIO FAMILY FUND INC EIN 83-1575536 | Human Services | $806.9M |
| 14 | HARTFORD HEALTHCARE MEDICAL GROUP SPECIALISTS PLLC EIN 37-1911194 | Mental Health | $771.6M |
| 15 | NORTHEAST MEDICAL GROUP INC EIN 06-1330992 | Uncategorized | $724.6M |
| 16 | HARTFORD HEALTH CARE CORPORATION EIN 22-2672834 | Health | $714.8M |
| 17 | SVMC HOLDINGS INC EIN 83-2550272 | Health | $707.0M |
| 18 | QUINNIPIAC UNIVERSITY EIN 06-0646701 | Education | $658.6M |
| 19 | CONNECTICUT CHILDRENS MEDICAL CENTER EIN 06-0646755 | Health | $639.6M |
| 20 | WILLIAM W BACKUS HOSPITAL EIN 06-0250773 | Health | $630.7M |
| 21 | GREENWICH HOSPITAL EIN 06-0646659 | Health | $591.8M |
| 22 | SACRED HEART UNIVERSITY EIN 06-0776644 | Education | $575.7M |
| 23 | MIDDLESEX HOSPITAL EIN 06-0646718 | Health | $562.6M |
| 24 | FAIRFIELD UNIVERSITY EIN 06-0646623 | Education | $558.6M |
| 25 | LAWRENCE AND MEMORIAL HOSPITAL INC EIN 06-0646704 | Health | $533.9M |
| 26 | MIDSTATE MEDICAL CENTER EIN 06-0646715 | Health | $477.9M |
| 27 | NUVANCE HEALTH MEDICAL PRACTICE CT INC EIN 06-1137531 | Uncategorized | $456.6M |
| 28 | WESLEYAN UNIVERSITY EIN 06-0646959 | Education | $443.2M |
| 29 | NORWALK HOSPITAL ASSOCIATION EIN 06-6068853 | Health | $439.3M |
| 30 | UNIVERSITY OF NEW HAVEN EIN 06-0761704 | Education | $392.2M |
| 31 | SAINT MARYS HOSPITAL INC EIN 06-0646844 | Health | $374.4M |
| 32 | THE MERCY HOSPITAL INC EIN 04-3398280 | Health | $333.9M |
| 33 | UNIVERSITY OF HARTFORD EIN 06-0731360 | Education | $305.6M |
| 34 | COMMON FUND FOR NON-PROFIT ORGANIZATIONS EIN 23-7037968 | Community Improvement | $288.7M |
| 35 | TRINITY COLLEGE EIN 06-0646927 | Education | $281.0M |
| 36 | THE GRIFFIN HOSPITAL EIN 06-0647014 | Health | $273.7M |
| 37 | TRINITY HEALTH OF NEW ENGLAND PROVIDER NETWORK ORGANIZATION INC EIN 06-1450168 | Uncategorized | $273.4M |
| 38 | STAMFORD HEALTH MEDICAL GROUP INC EIN 27-1648289 | Health | $267.6M |
| 39 | HARTFORD HEALTHCARE MEDICAL GROUP INC EIN 45-4456939 | Health | $243.4M |
| 40 | CHARLOTTE HUNGERFORD HOSPITAL EIN 06-0646678 | Health | $224.7M |
| 41 | CONNECTICUT CHILDRENS SPECIALTY GROUP INC EIN 06-1446900 | Health | $190.3M |
| 42 | ACHIEVEMENT FIRST BROOKLYN CHARTER SCHOOLS EIN 20-5118947 | Education | $187.2M |
| 43 | CONNECTICUT COLLEGE EIN 06-0646587 | Education | $185.8M |
| 44 | COMMUNITY HEALTH CENTER INCORPORATED EIN 06-0897105 | Health | $181.2M |
| 45 | AREA COOPERATIVE EDUCATIONAL SERVICES EIN 06-0881700 | Education | $176.8M |
| 46 | TRINITY HEALTH OF NEW ENGLAND CORPORATION INC EIN 06-1491191 | Health | $175.9M |
| 47 | BRISTOL HOSPITAL INCORPORATED EIN 06-0646559 | Health | $175.2M |
| 48 | HARTFORD HEALTHCARE AT HOME INC EIN 06-0646938 | Health | $153.2M |
| 49 | COORDINATED TRANSPORTATION SOLUTIONS INC EIN 06-1496806 | Human Services | $152.9M |
| 50 | UFCW AND PARTICIPATING EMPLOYERS NEW ENGLAND HEALTH FUND EIN 06-6069081 | Uncategorized | $151.9M |
By sector
15,890 organisations across 26 categories.
- 2,44515.4%
- 1,77211.2%
- 1,65410.4%
- 1,5719.9%
- 1,4999.4%
- 1,4048.8%
- 7114.5%
- 5483.4%
- 5133.2%
- 5083.2%
- 4362.7%
- 3742.4%
Featured organizations
A representative cross-section beyond the revenue ranking — from national institutions to small community groups and private foundations — chosen for complete, recent IRS filings.
- PETER AND CARMEN LUCIA BUCK FOUNDATION INCPhilanthropy & Grantmaking · MYSTIC · $1B+ in assets
- MCCHORD FOUNDATIONHuman Services · NORWALK · $100M–$1B in assets
- CHANTECAILLE FAMILY FOUNDATIONEnvironment · GREENWICH · $100M–$1B in assets
- BIG WIN PHILANTHROPY INCYouth Development · GREENS FARMS · $100M–$1B in assets
- CW RESOURCES INCEmployment · NEW BRITAIN · $100M–$1B revenue
- HAMPSHIRE FOUNDATION INCFood, Agriculture & Nutrition · HARTFORD · $100M–$1B in assets
- YALE UNIVERSITY RETIREE HEALTH BENEFITS COVERAGE TRMutual Benefit · NEW HAVEN · $100M–$1B revenue
- WHEELER CLINIC INCMental Health · PLAINVILLE · $100M–$1B revenue
- CHOATE ROSEMARY HALL FOUNDATION INCORPORATEDEducation · WALLINGFORD · $10M–$100M revenue
- BRANT FOUNDATION INCArts, Culture & Humanities · GREENWICH · $10M–$100M in assets
- JOHNSON MEMORIAL HOSPITAL INCHealth · HARTFORD · $10M–$100M revenue
- FINANCIAL ACCOUNTING FOUNDATIONPublic Benefit · NORWALK · $10M–$100M revenue
- FOERSTER BERNSTEIN FOUNDATIONUnknown · NORWALK · $10M–$100M in assets
- TOWN FAIR TIRE FOUNDATION INCDiseases & Disorders · EAST HAVEN · $10M–$100M in assets
- CARDINAL BAY INCHousing & Shelter · SHELTON · $10M–$100M revenue
- CONNECTICUT BAR FOUNDATION INCCrime & Legal · HARTFORD · $10M–$100M revenue
- CONNECTICUT INSTITUTE FOR COMMUNITIES INCCommunity Improvement · DANBURY · $10M–$100M revenue
- AYERS WILD CAT CONSERVATION TRAnimal-Related · WEST HARTFORD · $10M–$100M in assets
- HOLE IN THE WALL GANG FUND INCRecreation & Sports · NEW HAVEN · $10M–$100M revenue
- BUILDON INCInternational · STAMFORD · $10M–$100M revenue
- INSTITUTE FOR NEURODEGENERATIVE DISORDERS INCMedical Research · NEW HAVEN · $10M–$100M revenue
- WILLIAM & MARY GREVE FOUNDATION INCScience & Technology · NORFOLK · $10M–$100M in assets
- CONGREGATION BH INCReligion · NEW HAVEN · $1M–$10M in assets
- MORTLAKE FIRE COMPANY OF BROOKLYN CONNECTICUT INCPublic Safety · BROOKLYN · $100K–$1M revenue
- DALIO FOUNDATION INCPhilanthropy & Grantmaking · WESTPORT · $1B+ in assets
- ABILITY BEYOND DISABILITY INCHuman Services · BETHEL · $10M–$100M revenue
- OCEAN EXPLORATION TRUST INCEnvironment · NEW LONDON · $10M–$100M revenue
- LEIR RETREAT CENTER INCYouth Development · RIDGEFIELD · $10M–$100M in assets
- GOODWILL OF WESTERN AND NORTHERN CONNECTICUT INCEmployment · BRIDGEPORT · $10M–$100M revenue
- FOOD RESCUE US INCFood, Agriculture & Nutrition · STAMFORD · $10M–$100M revenue
- COMMUNITY HEALTH RESOURCES INCMental Health · WINDSOR · $10M–$100M revenue
- BRUNSWICK SCHOOL INCEducation · GREENWICH · $10M–$100M revenue
- LOCKWOOD-MATHEWS MANSION MUSEUM OF NORWALK INCArts, Culture & Humanities · NORWALK · $1M–$10M revenue
- VISITING NURSE ASSOCIATION OF SOUTHEASTERN CONNECTICUT INCHealth · WATERFORD · $1M–$10M revenue
- AURORA WOMEN AND GIRLS FOUNDATION INCPublic Benefit · WEST HARTFORD · $100K–$1M revenue
- WESTBROOK FOUNDATION INCUnknown · WESTBROOK · $1M–$10M in assets
- LEEWAY INCDiseases & Disorders · NEW HAVEN · $1M–$10M revenue
- CAPITAL FOR CHANGE INCHousing & Shelter · WALLINGFORD · $1M–$10M revenue
- PROJECT MODEL OFFENDER REINTEGRATION EXPERIENCE INCCrime & Legal · NEW HAVEN · $1M–$10M revenue
- BLUE HILLS CIVIC ASSOCIATION INCORPORATEDCommunity Improvement · HARTFORD · $1M–$10M revenue
- SIMON FOUNDATION INCORPORATEDAnimal-Related · BLOOMFIELD · $1M–$10M in assets
- IMUS RANCH INCRecreation & Sports · DARIEN · $1M–$10M in assets
- AMERICAN SECONDARY SCHOOLS FOR INTERNATL STUDENTS & TEACHERS INCInternational · SUFFIELD · $1M–$10M revenue
- LESLIE AND SHEILA KLEIN FOUNDATION INCMedical Research · NEW CANAAN · $1M–$10M in assets
- CARBON CONTAINMENT LABScience & Technology · NEW HAVEN · $1M–$10M revenue
- CHAI MITZVAH INCReligion · WEST HARTFORD · Under $100K revenue
- ZOOM FOUNDATIONPhilanthropy & Grantmaking · GREENWICH · $1B+ in assets
- YOUNG MENS CHRISTIAN ASSOC OF GREENWICHHuman Services · GREENWICH · $1M–$10M revenue
- SAVE THE SOUND INCEnvironment · NEW HAVEN · $1M–$10M revenue
- EXPERIENCE CAMPSYouth Development · WESTPORT · $1M–$10M revenue
- PROJECT GENESIS INCORPORATEDEmployment · WILLIMANTIC · $1M–$10M revenue
- NEW HAVEN ECOLOGY PROJECT INCFood, Agriculture & Nutrition · NEW HAVEN · $1M–$10M revenue
- ALTERNATIVES INCMental Health · NAUGATUCK · $1M–$10M revenue
- ROBEY CHARITABLE TRUSTEducation · REDDING · $1M–$10M in assets
- EASTERN CONNECTICUT SYMPHONY INCArts, Culture & Humanities · NEW LONDON · $100K–$1M revenue
- WESTPORT VOLUNTEER EMERGENCY MEDICAL SERVICE INCHealth · WESTPORT · $100K–$1M revenue
- APK CHARITIES CORPORATIONPublic Benefit · MADISON · Under $100K revenue
- GEH FOUNDATIONUnknown · MADISON · $100K–$1M in assets
- PARTNERSHIP FOR STRONG COMMUNITIES INCHousing & Shelter · HARTFORD · $100K–$1M revenue
- NEW HAVEN INNOVATION LABS INCCommunity Improvement · CHESHIRE · $100K–$1M revenue
Frequently asked questions about nonprofits in Connecticut
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
Frequently asked questions about nonprofits in Connecticut
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
- How many tax-exempt nonprofits are registered in Connecticut?
- The IRS Exempt Organization Business Master File lists all currently-exempt organisations by state of address. Givalgo Discover provides a free profile for every IRS-registered nonprofit in Connecticut, sortable by sector, revenue, and IRS status.
- Which sectors dominate connecticut nonprofit activity?
- The IRS NTEE (National Taxonomy of Exempt Entities) classification breaks nonprofit activity into 26 major groups. Education, Human Services, and Health typically dominate by both count and aggregate revenue in most US states; the exact distribution for Connecticut is shown on this page.
- How do I verify a connecticut nonprofit before issuing a grant?
- Check the IRS Auto-Revocation List AND IRS Publication 78 — these are different feeds that answer different questions. Givalgo Discover cross-references both on every profile and surfaces a free due-diligence summary card.
- Are donations to connecticut nonprofits tax-deductible?
- Donations are tax-deductible only if the recipient is listed in IRS Publication 78 at the time of the gift. State-level registration with the Connecticut charities regulator is a separate requirement that does not affect federal deductibility.
- Where can I find Form 990 financials for a connecticut nonprofit?
- Form 990 is a federal IRS filing — financials, governance, and programs are public regardless of which state the nonprofit is registered in. Givalgo Discover aggregates the full Form 990 series for every IRS-registered organisation, including those in Connecticut.