Foundations · IRS 990 filings

Foundations in Connecticut

1,557
foundations
$3.54B
grants paid, FY2023–FY2025
297
say they accept unsolicited
$5,975
median grant

Grantlas lists 1,557 foundations based in Connecticut — 1,469 private foundations and 88 grantmaking charities such as community foundations and United Ways — from their 990-PF and Form 990 filings for FY2023–FY2025. Together they paid out $3.54 billion in grants in their latest filing year, and 297 of them (19%) say they accept unsolicited requests. The most common cities are Greenwich (158), Stamford (132) and West Hartford (80).

297 of them say on their 990-PF that they accept unsolicited requests. Foundations accepting applications in Connecticut.

Top 25 of 1,557 foundations

All 25 foundations below say on their 990-PF that they accept unsolicited requests. Another 272 in this list say so too. Ranked by what they paid in grants in their latest filing.

Foundations in Connecticut
Boehringer Ingelheim Cares Foundation IncRidgefield, CT$1.79B$1.99B$1.59B–$1.99BFY2025Locked: fit score and contacts
Alexion Access FoundationNew Haven, CT$18.1M$131.9M$121,176–$70.4MFY2025Locked: fit score and contacts
Ge Aerospace FoundationNorwalk, CT$429$15.3M$10–$6MFY2024Locked: fit score and contacts
The Fb Heron FoundationNew Haven, CT$2,500$14.8M$100–$10MFY2024Locked: fit score and contacts
The Melville Charitable Trust IncNew Haven, CT$150,000$12.4M$3,750–$1.9MFY2024Locked: fit score and contacts
E Matilda Ziegler Foundation for theGreenwich, CT$3.3M$9.9M$3M–$3.6MFY2024Locked: fit score and contacts
Eversource Energy Foundation IncHartford, CT$2,000$6.2M$250–$700,000FY2024Locked: fit score and contacts
Worldquant FoundationOld Greenwich, CT$30,000$6.1M$10,000–$5.6MFY2024Locked: fit score and contacts
William Caspar Graustein Memorial FundHamden, CT$10,000$5.1M$1,000–$118,125FY2024Locked: fit score and contacts
Edward John Noble Foundation IncGreenwich, CT$10,000$5M$1,000–$3MFY2024Locked: fit score and contacts
Rhoda & David Chase FamilyHartford, CT$2,917$4.5M$36–$2.5MFY2024Locked: fit score and contacts
The Jane Coffin Childs Memorial Fund forNew Haven, CT$73,800$4.1M$4,200–$114,000FY2024Locked: fit score and contacts
The Patrick and Catherine WeldonWest Hartford, CT$151,000$3.6M$3,000–$320,000FY2025Locked: fit score and contacts
Mulberry Essence FoundationGreenwich, CT$5,200$3.5M$100–$1.2MFY2024Locked: fit score and contacts
American Savings Foundation IncNew Britain, CT$1,750$3.4M$234–$150,000FY2025Locked: fit score and contacts
Silver Family FoundationDarien, CT$35,000$3.2M$5,000–$500,000FY2024Locked: fit score and contacts
Avangrid Foundation IncOrange, CT$20,000$3.2M$5,000–$583,479FY2025Locked: fit score and contacts
John Brown Cook FoundationChester, CT$150,000$3.1M$50,000–$475,000FY2025Locked: fit score and contacts
The Elinor Patterson Baker FoundationGreenwich, CT$2.9M$3M$2.9M–$3MFY2025Locked: fit score and contacts
The Fred C Gloeckner Foundation IncNew Canaan, CT$3M$3M—FY2024Locked: fit score and contacts
Connecticut Health Foundation IncHartford, CT$15,000$2.6M$750–$335,000FY2024Locked: fit score and contacts
Sullivan FoundationWest Hartford, CT$5,000$2.5M$975–$1.3MFY2025Locked: fit score and contacts
The Maximilian E and Marion O HoffmanWest Hartford, CT$19,000$2.1M$2,500–$250,000FY2024Locked: fit score and contacts
Dellora A & Lester J Norris FoundationGreenwich, CT$1.8M$2M$1.6M–$2MFY2025Locked: fit score and contacts
The Riversville FoundationGreenwich, CT$136,000$1.9M$34,000–$500,000FY2024Locked: fit score and contacts
  • Median grant and grant range come from the 990-PF grant schedule; a dash means there is none to report.
  • “One grant” means a schedule with a single grant — no median, nothing to range over. “One amount” means several grants, all the same size.

1,532 more foundations — see all in Grantlas

Data from 990-PF and Form 990 filings, FY2023–FY2025. Updated November 8, 2026.