| Brookline High School Alumni AsscPeabody | Form 990-N | No figure |
| Little League Baseball IncEverett | Form 990-EZ | $46,835FY2025 |
| Friends of the Norfolk Public Library IncNorfolk | Form 990-EZ | $46,565FY2026 |
| Sharon Historical Society IncSharon | Form 990-N | No figure |
| Reading Symphony Orchestra IncReading | Form 990-N | No figure |
| Belmont Historical Society IncBelmont | Form 990-N | No figure |
| Boylston Place Association IncBoston | Form 990-N | No figure |
| The Andover Choral Society IncAndover | Form 990-N | No figure |
| Marblehead Awareness GroupMarblehead | Form 990-N | No figure |
| Senior Citizens Fund of Newton IncorporatedNewtonville | Form 990-N | No figure |
| Medford Historical SocietyMedford | Form 990 | $45,802FY2025 |
| Carlisle Historical Society IncCarlisle | Form 990 | $45,611FY2024 |
| Friends of Brewster Dog Park IncBrewster | Form 990-N | No figure |
| Sweet Adelines InternationalAuburn | Form 990-N | No figure |
| PTA Massachusetts Parent-Teacher Association IncHolden | Form 990-EZ | $45,263FY2025 |
| Cambridge Street Community Development CorpBoston | Form 990-N | No figure |
| Friends of the Waltham Seniorcitizens Incc/O Eleanor S MCWaltham | Form 990-EZ | $45,054FY2024 |
| Friends of the West Tisbury Library IncWest Tisbury | Form 990-N | No figure |
| Friends of the Center at the Heights IncNeedham | Form 990-N | No figure |
| Kent Charlestown Community School Council IncCharlestown | Form 990-N | No figure |
| Norwood Parents Music Association IncNorwood | Form 990-EZ | $44,309FY2025 |
| Special Townies Autistic and Exceptional Children Programs IncCharlestown | Form 990-N | No figure |
| Ashland Parent Teacher Organization -Grades K-8- IncAshland | Form 990-EZ | $44,174FY2025 |
| Westford Conservation Trust IncWestford | Form 990-N | No figure |
| Ancient Mystical Order of Rosae CrucisAllston | Form 990-N | No figure |
| Clinton Historical SocietyClinton | Form 990 | $43,689FY2025 |
| Eagle Santa Fund IncPittsfield | Form 990-N | No figure |
| Natick Education FoundationNatick | Form 990-N | No figure |
| Foundation for Jewish Publications IncBoston | Form 990-N | No figure |
| Garden Club of Buzzards Bay IncSouth Dartmouth | Form 990-EZ | $43,008FY2026 |
| Little League Baseball IncEast Boston | Form 990-N | No figure |
| Friends of the Dracut Elderly IncDracut | Form 990-N | No figure |
| Boylston Public Library Foundation IncorporatedBoylston | Form 990-N | No figure |
| Friends of the Schoolhouse IncBarnstable | Form 990-N | No figure |
| Wilmington Community Fund IncWilmington | Form 990-N | No figure |
| Central Mass Baseball League IncLeominster | Form 990-N | No figure |
| Acton-Boxborough Monday Nite Quarterbacks AssociationActon | Form 990-EZ | $42,191FY2025 |
| Friends of the Leominster Public Library IncLeominster | Form 990-EZ | $42,088FY2025 |
| Byam School AssociationChelmsford | Form 990-EZ | $41,897FY2026 |
| Boylston Lions Club Foundation IncBoylston | Form 990-EZ | $41,745FY2025 |
| New England Scholastic Band Association IncWakefield | Form 990-EZ | $41,675FY2025 |
| Grant W Koch Scholarship FundHolyoke | Form 990 | $41,366FY2025 |
| Historical Society of Greenfield MassGreenfield | Form 990-N | No figure |
| Chestnut Hill Garden ClubChestnut Hill | Form 990-N | No figure |
| Friends of the Sherborn LibrarySherborn | Form 990-EZ | $41,018FY2025 |
| Ellis Neighborhood Association IncBoston | Form 990-EZ | $40,980FY2025 |
| Framingham Townwide PTO CouncilFramingham | Form 990-N | No figure |
| Interhelp IncWatertown | Form 990-N | No figure |
| Hellenic Arts Society IncWorcester | Form 990-N | No figure |
| Berkshire Playwrights Lab IncGreat Barrington | Form 990-N | No figure |