Largest private foundations in Massachusetts
| # | Foundation | City | Focus area | Total assets |
|---|---|---|---|---|
| 1 | Fidelity Foundation | Boston | Not listed | $5.0 billion |
| 2 | Barr Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $1.9 billion |
| 3 | The Patrick J McGovern Foundation Inc | Boston | Not listed | $1.5 billion |
| 4 | Klarman Family Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $713.2 million |
| 5 | Flatley Foundation | Braintree | Philanthropy, Voluntarism & Grantmaking Foundations | $691.0 million |
| 6 | The Grantham Foundation For The Protection Of The Environment | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $613.2 million |
| 7 | Edward C Johnson Fund | Boston | Not listed | $563.9 million |
| 8 | Yawkey Foundation Ii | Westwood | Philanthropy, Voluntarism & Grantmaking Foundations | $467.4 million |
| 9 | Mathworks Foundation Inc | Natick | Philanthropy, Voluntarism & Grantmaking Foundations | $444.8 million |
| 10 | One8 Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $401.1 million |
| 11 | Dunleavy Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $310.3 million |
| 12 | The Mellen Charitable Foundation Inc | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $307.9 million |
| 13 | Richard And Susan Smith Family Foundation | Newton | Not listed | $302.9 million |
| 14 | Peter And Ann Lambertus Family Foundation Inc | Norwood | Philanthropy, Voluntarism & Grantmaking Foundations | $297.9 million |
| 15 | Brookfield Arts Foundation | Boston | Not listed | $297.3 million |
| 16 | Eastern Bank Charitable Foundation | Wakefield | Philanthropy, Voluntarism & Grantmaking Foundations | $266.7 million |
| 17 | Broad Reach Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $263.5 million |
| 18 | Edward P Evans | Andover | Education | $260.6 million |
| 19 | Cummings Foundation Grants Inc | Woburn | Philanthropy, Voluntarism & Grantmaking Foundations | $258.2 million |
| 20 | Schooner Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $253.7 million |
| 21 | Richard K Lubin Family Foundation | Boston | Not listed | $223.4 million |
| 22 | Swartz Foundation | Newton | Philanthropy, Voluntarism & Grantmaking Foundations | $220.8 million |
| 23 | Linde Family Foundation | Boston | Philanthropy, Voluntarism & Grantmaking Foundations | $214.9 million |
| 24 | George I Alden Trust | Worcester | Not listed | $214.4 million |
| 25 | Telemachus And Irene Demoulas Family Foundation | Chelmsford | Philanthropy, Voluntarism & Grantmaking Foundations | $201.2 million |
The full list includes all 3,807 Massachusetts foundations with street address, ZIP, EIN, focus area, income and tax period, plus every other state.
Massachusetts cities with the most private foundations
- Boston: 1,035
- Cambridge: 111
- Worcester: 78
- Newton: 66
- Needham: 66
- Wellesley: 53
- Waltham: 51
- Hanover: 49
- Lexington: 48
- Concord: 44
Most common focus areas in Massachusetts
- Philanthropy, Voluntarism & Grantmaking Foundations: 1,823
- Education: 275
- Arts, Culture & Humanities: 123
- Human Services: 114
- Recreation & Sports: 89
- Religion-Related: 43
- Health Care: 31
- Youth Development: 31
Where does this data come from?
The IRS Exempt Organizations Business Master File, downloaded in October 2026 and filtered to private foundations. Assets are as reported on each foundation's latest return on file. Foundations with no focus area code are shown as Not listed.