Data / Nonprofits / Massachusetts / Environment
Environment nonprofits in Massachusetts: 1,035 registered with the IRS
1,035 environment nonprofits are registered with the IRS in Massachusetts, 1,008 of them 501(c)(3) charities; the 457 that report revenue took in $1.20 billion. The most are in Boston (85), Cambridge (30), Somerville (16). The largest by revenue: Iso New England Inc ($303.3 million), Trustees of Reservations ($57.9 million), Massachusetts Audubon Society Inc ($56.2 million).
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The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Iso New England Inc | Holyoke | 501(c)(3) | 2004 | $303.3 million | $792.8 million | 2025-12 |
| Trustees of Reservations | Boston | 501(c)(3) | 1935 | $57.9 million | $398.2 million | 2025-03 |
| Massachusetts Audubon Society Inc | Lincoln | 501(c)(3) | 1951 | $56.2 million | $402 million | 2025-06 |
| Clean Air Task Force Inc | Boston | 501(c)(3) | 2000 | $50.1 million | $47.2 million | 2024-12 |
| Appalachian Mountain Club | Charlestown | 501(c)(3) | 1934 | $43.6 million | $221 million | 2024-12 |
| Ceres Inc | Boston | 501(c)(3) | 1990 | $33.6 million | $35.1 million | 2025-10 |
| Deploy-Us Inc | Boston | 501(c)(3) | 2017 | $32 million | $18.3 million | 2025-12 |
| New England Interstate Water Pollution Control Commission | Lowell | 501(c)(3) | 1981 | $31.7 million | $15.4 million | 2025-09 |
| Conservation Law Foundation Inc | Boston | 501(c)(3) | 1967 | $24.2 million | $50.3 million | 2025-07 |
| Project Innerspace Inc | Boston | 501(c)(3) | 2022 | $23.1 million | $17.8 million | 2024-12 |
| Massachusetts Service Alliance Inc | Boston | 501(c)(3) | 1995 | $19.3 million | $6.5 million | 2025-06 |
| Nantucket Conservation Foundation Inc | Nantucket | 501(c)(3) | 1964 | $17.5 million | $178.4 million | 2024-12 |
| Center for Coastal Studies Inc | Provincetown | 501(c)(3) | 1978 | $16.3 million | $19.5 million | 2025-12 |
| Sconset Trust Inc | Siasconset | 501(c)(3) | 1985 | $16.3 million | $59.1 million | 2024-12 |
| 350 Org | Boston | 501(c)(3) | 2008 | $16 million | $5.1 million | 2025-09 |
| Buzzards Bay Coalition Inc | New Bedford | 501(c)(3) | 1988 | $15.7 million | $51.9 million | 2024-12 |
| Greentown Collaborative Inc | Somerville | 501(c)(3) | 2021 | $15 million | $37.4 million | 2024-12 |
| Cathleen Stone Island Outward Bound School Inc | Boston | 501(c)(3) | 1994 | $14.7 million | $16.4 million | 2024-12 |
| Goodpower Education Fund Inc | Boston | 501(c)(3) | 2009 | $14.3 million | $5.5 million | 2025-06 |
| Harwich Conservation Trust | South Harwich | 501(c)(3) | 1993 | $13.4 million | $32.2 million | 2025-12 |
| Center for Ecotechnology Inc | Dalton | 501(c)(3) | 1978 | $10.8 million | $3.6 million | 2025-10 |
| Boston Harbor Now Inc | Boston | 501(c)(3) | 1995 | $10.1 million | $9.7 million | 2025-03 |
| New England Forestry Foundation Inc | Littleton | 501(c)(3) | 1952 | $9.1 million | $50.6 million | 2025-04 |
| Essex County Greenbelt Association | Essex | 501(c)(3) | 1965 | $9 million | $72.4 million | 2024-12 |
| Worcester County Horticultural Society | Boylston | 501(c)(3) | 1983 | $8.7 million | $59.4 million | 2025-03 |
| New Ecology Inc | Boston | 501(c)(3) | 1999 | $8.4 million | $6.3 million | 2024-12 |
| Infact | Boston | 501(c)(3) | 1980 | $8 million | $4.9 million | 2025-06 |
| Manomet Inc | Manomet | 501(c)(3) | 1989 | $7.9 million | $37.2 million | 2025-09 |
| Sheriffs Meadow Foundation | West Tisbury | 501(c)(3) | 1961 | $7.5 million | $107.3 million | 2025-06 |
| Native Land Conservancy Inc | Mashpee | 501(c)(3) | 2014 | $6.5 million | $18 million | 2024-12 |
| Berkshire Natural Resources | Lenox | 501(c)(3) | 1968 | $6.3 million | $42.1 million | 2025-06 |
| Association To Preserve Cape Cod Inc | Dennis | 501(c)(3) | 1990 | $6.3 million | $3.8 million | 2025-12 |
| Efficiency Forward Inc | Medford | 501(c)(3) | 1998 | $6.2 million | $3.6 million | 2025-12 |
| Northeast Energy Efficiency Partnerships Inc | Woburn | 501(c)(3) | 2017 | $5.9 million | $5.2 million | 2024-12 |
| Sudbury Valley Trustees Inc | Sudbury | 501(c)(3) | 1957 | $5.8 million | $38.2 million | 2025-06 |
| Northeast States for Coordinated Air Use Management Inc | Boston | 501(c)(3) | 1995 | $5.8 million | $14.6 million | 2025-09 |
| Cascade Climate Inc | Somerville | 501(c)(3) | 2024 | $5.7 million | $5.7 million | 2024-12 |
| Mystic River Watershed Association Inc | Arlington | 501(c)(3) | 1976 | $5.7 million | $11.1 million | 2025-12 |
| Barnstable Land Trust Inc | W Barnstable | 501(c)(3) | 1984 | $5.5 million | $43.3 million | 2025-12 |
| Furniture Trust Organization Inc | Arlington | 501(c)(3) | 2009 | $5.3 million | $982,265 | 2024-12 |
| Populace Inc | Cambridge | 501(c)(3) | 2014 | $5.1 million | $12.1 million | 2024-12 |
| Charles River Watershed Association Inc | Boston | 501(c)(3) | 1992 | $4.9 million | $10 million | 2025-09 |
| Native Plant Trust Inc | Wayland | 501(c)(3) | 1955 | $4.8 million | $23.2 million | 2024-12 |
| Friends of the Public Garden Inc | Boston | 501(c)(3) | 1975 | $4.7 million | $35.1 million | 2025-12 |
| Homeworld Collective Inc | Somerville | 501(c)(3) | 2022 | $4.7 million | $4.6 million | 2024-12 |
| Connecticut River Watershed Council Inc | Greenfield | 501(c)(3) | 1953 | $4.6 million | $5.3 million | 2025-06 |
| Greenroots Inc | Chelsea | 501(c)(3) | 2016 | $4.3 million | $12.6 million | 2025-06 |
| Friends of the Arava Institute LTD | Newton Center | 501(c)(3) | 2000 | $3.8 million | $6.8 million | 2025-06 |
| Ipswich River Watershed Association Inc | Ipswich | 501(c)(3) | 1978 | $3.8 million | $4.5 million | 2025-12 |
| Coonamessett Farm Foundation Inc | East Falmouth | 501(c)(3) | 2009 | $3.8 million | $3.6 million | 2025-12 |
| Consortium for Energy Efficiency Inc | Middleton | 501(c)(3) | 1996 | $3.7 million | $4.4 million | 2024-12 |
| Mount Grace Land Conservation Trust Inc | Athol | 501(c)(3) | 1987 | $3.6 million | $8.6 million | 2025-05 |
| Goodpower Inc | Boston | 501(c)(4) | 2022 | $3.6 million | $834,925 | 2025-06 |
| Environmental League of Massachusetts Inc | Boston | 501(c)(3) | 1997 | $3.6 million | $6.6 million | 2025-06 |
| Regional Environmental Council Inc | Worcester | 501(c)(3) | 1975 | $3.5 million | $5.1 million | 2025-06 |
| Orleans Conservation Trust | Orleans | 501(c)(3) | 1970 | $3.5 million | $54.6 million | 2025-12 |
| Massachusetts Horticultural Society | Wellesley | 501(c)(3) | 1943 | $3.2 million | $6.8 million | 2025-09 |
| Truro Conservation Trust | North Truro | 501(c)(3) | 1981 | $3.1 million | $2.1 million | 2024-12 |
| 300 Committee Land Trust Inc | East Falmouth | 501(c)(3) | 1986 | $3.1 million | $16.1 million | 2025-09 |
| Bourne Conservation Trust | Cataumet | 501(c)(3) | 1980 | $3.1 million | $23.4 million | 2025-04 |
| Duxbury Beach Reservation Inc | Duxbury | 501(c)(3) | 1976 | $3 million | $6.8 million | 2025-10 |
| Natures Classroom Inc | Charlton | 501(c)(3) | 1977 | $2.8 million | $6.6 million | 2025-06 |
| North American Marine Alliance Inc | Gloucester | 501(c)(3) | 1998 | $2.7 million | $1.8 million | 2024-12 |
| Westport Land Conservation Trust Inc | Westport | 501(c)(3) | 1972 | $2.6 million | $21.5 million | 2024-12 |
| Kestrel Land Trust Inc | Amherst | 501(c)(3) | 1994 | $2.6 million | $10.4 million | 2024-12 |
| Greengoat | Somerville | 501(c)(3) | 2003 | $2.5 million | $1.2 million | 2024-12 |
| Cape Cod Commericial Fishermens Alliance Inc | Chatham | 501(c)(3) | 1997 | $2.5 million | $10.1 million | 2024-12 |
| East Quabbin Land Trust Inc | Hardwick | 501(c)(3) | 1996 | $2.5 million | $10.1 million | 2025-12 |
| All in Energy Inc | Roslindale | 501(c)(3) | 2019 | $2.5 million | $1.5 million | 2024-12 |
| Lands Sake Incorporated | Weston | 501(c)(3) | 1981 | $2.4 million | $7.6 million | 2025-12 |
| Brewster Conservation Trust | Brewster | 501(c)(3) | 1983 | $2.3 million | $29.8 million | 2024-12 |
| Berkshire Garden Center Inc | Stockbridge | 501(c)(3) | 1946 | $2.2 million | $9.6 million | 2024-12 |
| Terracorps Inc | Pittsfield | 501(c)(3) | 2018 | $2.2 million | $1.1 million | 2025-08 |
| Wildlands Trust Inc | Plymouth | 501(c)(3) | 2010 | $2.1 million | $13.8 million | 2025-06 |
| North and South Rivers Watershed Association Inc | Norwell | 501(c)(3) | 1972 | $2.1 million | $4.3 million | 2025-12 |
| Mothers Out Front Inc | Boston | 501(c)(3) | 2015 | $2 million | $1.4 million | 2025-12 |
| Massachusetts Woodlands Institute Inc | Shelburne FLS | 501(c)(3) | 2001 | $2 million | $1.1 million | 2025-06 |
| Neponset River Watershed Assoc | Canton | 501(c)(3) | 1971 | $2 million | $2.4 million | 2025-03 |
| Wright Locke Farm Conservancy Inc | Winchester | 501(c)(3) | 2009 | $1.9 million | $1.9 million | 2025-03 |
| Polly Hill Arboretum Inc | West Tisbury | 501(c)(3) | 1996 | $1.9 million | $36.3 million | 2025-12 |
| Nantucket Land and Water Council Inc | Nantucket | 501(c)(3) | 1976 | $1.9 million | $42.7 million | 2024-12 |
| Nashua River Watershed Association Inc | Groton | 501(c)(3) | 1970 | $1.8 million | $3.6 million | 2025-06 |
| Ocean Alliance Inc | Gloucester | 501(c)(3) | 1987 | $1.8 million | $6.4 million | 2025-06 |
| Save the Harbor Save the Bay Inc Boston Fish Pier | Boston | 501(c)(3) | 1987 | $1.8 million | $1.1 million | 2025-12 |
| Northeast Sustainable Energy Association Inc | Greenfield | 501(c)(3) | 1975 | $1.8 million | $1.4 million | 2025-06 |
| Speak for the Trees Inc | Dorchester | 501(c)(3) | 2019 | $1.7 million | $1.5 million | 2024-12 |
| New England Water Environment Assoc | Woburn | 501(c)(3) | 1978 | $1.7 million | $798,435 | 2025-09 |
| Act Institute Inc | Boston | 501(c)(3) | 2009 | $1.7 million | $480,467 | 2024-12 |
| Greentown Org Inc | Somerville | 501(c)(3) | 2016 | $1.6 million | $574,963 | 2024-12 |
| Friends of Herring River Wellfleet-Truro | Wellfleet | 501(c)(3) | 2009 | $1.6 million | $751,159 | 2025-12 |
| Catf Action Inc | Boston | 501(c)(4) | 2020 | $1.6 million | $2.3 million | 2024-12 |
| Beyond Benign Inc | Wilmington | 501(c)(3) | 2014 | $1.6 million | $2 million | 2025-06 |
| Rural Land Foundation of Lincoln | Lincoln | 501(c)(3) | 1966 | $1.4 million | $7.6 million | 2025-12 |
| Lowell Parks and Conservation Trust Inc | Lowell | 501(c)(3) | 1994 | $1.4 million | $3.2 million | 2025-06 |
| Tourism Cares Inc | Canton | 501(c)(3) | 2005 | $1.4 million | $1.2 million | 2024-12 |
| Change Is Simple Incorporated | Beverly | 501(c)(3) | 2011 | $1.4 million | $1.6 million | 2025-06 |
| Just Zero | Sturbridge | 501(c)(3) | 2022 | $1.4 million | $576,451 | 2025-06 |
| Harvard Conservation Trust | Harvard | 501(c)(3) | 1973 | $1.4 million | $12.5 million | 2024-12 |
| Whale and Dolphin Conservation Inc | Plymouth | 501(c)(3) | 2006 | $1.3 million | $648,919 | 2025-09 |
| Round the Bend Farm Inc | S Dartmouth | 501(c)(3) | 2015 | $1.3 million | $1 million | 2025-09 |
| Compact of Cape Cod Conservation Trusts Inc | Barnstable | 501(c)(3) | 1988 | $1.3 million | $3.1 million | 2025-12 |
| Ashoka Trust for Research in Ecology and the Environment Inc | Belmont | 501(c)(3) | 1996 | $1.3 million | $930,745 | 2024-12 |
| Climate Change Ai | Cambridge | 501(c)(3) | 2022 | $1.3 million | $1 million | 2024-12 |
| Three Bays Preservation Inc | Osterville | 501(c)(3) | 1997 | $1.3 million | $5.6 million | 2024-12 |
| Alliance To Protect Nantucket Sound Inc | Hyannis | 501(c)(3) | 2002 | $1.3 million | $2.1 million | 2024-12 |
| Orion Society | GT Barrington | 501(c)(3) | 1997 | $1.2 million | $786,730 | 2024-12 |
| Future of Heat Institute Inc | Cambridge | 501(c)(3) | 2025 | $1.2 million | $878,201 | 2025-12 |
| Climate Xchange Education and Research Inc | Boston | 501(c)(3) | 2015 | $1.2 million | $860,250 | 2025-06 |
| Browning the Green Space Inc | Boston | 501(c)(3) | 2022 | $1.2 million | $704,673 | 2024-12 |
| Franklin Land Trust Inc | Shelburne FLS | 501(c)(3) | 1987 | $1.2 million | $6 million | 2025-06 |
| Sheffield Land Trust Inc | Sheffield | 501(c)(3) | 1994 | $1.2 million | $3.8 million | 2024-12 |
| Hilltown Land Trust Inc | Ashfield | 501(c)(3) | 1988 | $1.1 million | $3.5 million | 2025-03 |
| Dartmouth Natural Resources Trust | Dartmouth | 501(c)(3) | 1971 | $1.1 million | $9.7 million | 2025-12 |
| Concord Land Conservation Trust | Concord | 501(c)(3) | 1960 | $1.1 million | $36.8 million | 2025-09 |
| Westport River Watershed Alliance Inc | Westport | 501(c)(3) | 1977 | $1.1 million | $6.1 million | 2024-12 |
| Clean Production Action | Somerville | 501(c)(3) | 2014 | $1.1 million | $1.4 million | 2024-12 |
| Charles River Conservancy Inc | Cambridge | 501(c)(3) | 2000 | $1.1 million | $1.4 million | 2025-09 |
| Citysprouts Inc | Cambridge | 501(c)(3) | 2001 | $1.1 million | $509,320 | 2025-08 |
| Energy for Common Good Inc | Concord | 501(c)(3) | 2021 | $1 million | $28,471 | 2024-12 |
| Biodiversityworks Inc | Vineyard Haven | 501(c)(3) | 2011 | $992,798 | $1.7 million | 2025-09 |
| Dennis Conservation Trust | East Dennis | 501(c)(3) | 1993 | $934,900 | $8.5 million | 2024-12 |
| Partnership for Policy Integrity Inc | Amherst | 501(c)(3) | 2010 | $905,735 | $781,916 | 2025-12 |
| Low Impact Hydropower Institute | Pittsfield | 501(c)(3) | 2001 | $881,431 | $754,404 | 2025-12 |
| Merrimack River Watershed Council Inc | Lawrence | 501(c)(3) | 1978 | $870,133 | $1.5 million | 2025-06 |
| The Crane Institute of Sustainability Inc | Manchester | 501(c)(3) | 2016 | $855,287 | $384,946 | 2025-12 |
| Better Future Project Inc | Cambridge | 501(c)(3) | 2014 | $843,593 | $682,846 | 2024-12 |
| Vineyard Conservation Society Inc | Vineyard HVN | 501(c)(3) | 1968 | $829,652 | $8.9 million | 2024-06 |
| The Great Pond Foundation Inc | Edgartown | 501(c)(3) | 2000 | $822,506 | $1.4 million | 2025-12 |
| Siasconset Beach Preservation Fund Inc | Nantucket | 501(c)(3) | 1994 | $817,255 | $3.4 million | 2024-12 |
| Massachusetts Association of Conservation Districts | Westford | 501(c)(3) | 1994 | $789,884 | $282,900 | 2025-10 |
| Manchester Essex Conservation Trust Inv | Manchester | 501(c)(3) | 1999 | $787,753 | $9.8 million | 2024-12 |
| Green Restaurant Association | Boston | 501(c)(3) | 2001 | $784,138 | $6,047 | 2025-12 |
| Wachusett Greenways Inc | Holden | 501(c)(3) | 1999 | $780,382 | $1.7 million | 2024-12 |
| Berkshire Community Land Trust | GT Barrington | 501(c)(3) | 2015 | $773,041 | $1.8 million | 2025-12 |
| Johnny Appleseed Trail Association Inc | Fitchburg | 501(c)(3) | 1999 | $757,721 | $509,506 | 2025-06 |
| The Great Harbor Yacht Club Foundation Inc | Nantucket | 501(c)(3) | 2019 | $751,989 | $3.9 million | 2025-12 |
| Energy Allies A NJ Nonprofit Corporation | Cambridge | 501(c)(3) | 2014 | $745,482 | $160,439 | 2023-12 |
| International Conservation Fund | Boston | 501(c)(3) | 2019 | $728,486 | $550,126 | 2025-12 |
| Metacomet Land Trust Inc | Franklin | 501(c)(3) | 1993 | $702,601 | $3.8 million | 2024-12 |
| Blackstone Watershed Collaborative Inc | Sutton | 501(c)(3) | 2024 | $699,696 | $246,751 | 2025-12 |
| Natural Resources Trust of Easton | North Easton | 501(c)(3) | 1968 | $686,096 | $3 million | 2025-06 |
| Association for Environmental Health & Sciences Foundation Inc | Amherst | 501(c)(3) | 2009 | $650,934 | $824,028 | 2024-12 |
| Salem Sound 2000 Inc | Salem | 501(c)(3) | 1997 | $647,366 | $1 million | 2025-06 |
| Edward Street Day Care Center Inc | Worcester | 501(c)(3) | 1968 | $607,296 | $2 million | 2025-06 |
| Marthas Vineyard Fishermens Preservation Trust Inc | Menemsha | 501(c)(3) | 2015 | $584,734 | $1.1 million | 2024-12 |
| Massachusetts Rivers Alliance Inc | Somerville | 501(c)(3) | 2008 | $584,589 | $585,150 | 2024-12 |
| Mattapoisett Land Trust Inc | Mattapoisett | 501(c)(3) | 1974 | $582,858 | $7.7 million | 2024-12 |
| Berkshire Environmental Action Team Inc | Pittsfield | 501(c)(3) | 2004 | $582,043 | $623,608 | 2025-12 |
| Eco-Logic Development Fund | Cambridge | 501(c)(3) | 1993 | $580,490 | $255,358 | 2024-12 |
| Earthworm Inc | Somerville | 501(c)(3) | 1975 | $565,330 | $803,925 | 2024-12 |
| National Environmental Policy and Law Center Inc | Boston | 501(c)(3) | 1991 | $559,866 | $3.1 million | 2025-06 |
| Massachusetts Land Conservation Trust Inc | Boston | 501(c)(3) | 1993 | $558,944 | $18.3 million | 2025-03 |
| Oars Inc | Concord | 501(c)(3) | 1987 | $547,367 | $1.4 million | 2024-12 |
| Greater Worcester Land Trust Inc | Worcester | 501(c)(3) | 1988 | $528,691 | $11.2 million | 2024-12 |
| Flying Cloud Institute Inc | GT Barrington | 501(c)(3) | 1981 | $526,886 | $1 million | 2024-12 |
| Rehoboth Land Trust | Rehoboth | 501(c)(3) | 1999 | $519,777 | $1.5 million | 2025-12 |
| Lloyd Center for the Environment Inc | S Dartmouth | 501(c)(3) | 1985 | $505,984 | $4 million | 2024-12 |
| Freedoms Way Heritage Association | Devens | 501(c)(3) | 1995 | $505,084 | $798,999 | 2025-09 |
| North County Land Trust Inc | Leominster | 501(c)(3) | 1994 | $502,985 | $4.7 million | 2025-06 |
| Chatham Conservation Foundation Inc | Chatham | 501(c)(3) | 1963 | $499,306 | $24.2 million | 2025-07 |
| Dover Land Conservation Trust | Dover | 501(c)(3) | 1965 | $496,231 | $2.9 million | 2025-12 |
| Massachusetts Association of Conse Rvation Commission Inc | Belmont | 501(c)(3) | 1973 | $491,468 | $843,013 | 2025-06 |
| Gloucester Fishing Community Preservation Fund Inc | Gloucester | 501(c)(3) | 2008 | $490,600 | $12.4 million | 2024-12 |
| Sassafras Earth Education | Aquinnah | 501(c)(3) | 2016 | $481,108 | $413,880 | 2025-12 |
| Williamstown Rural Land Foundation | Williamstown | 501(c)(3) | 1987 | $472,030 | $6 million | 2024-12 |
| Climate Asia Inc | Chestnut Hill | 501(c)(3) | 2023 | $471,692 | $258,133 | 2025-12 |
| Friends of Bass River Inc | Yarmouth Port | 501(c)(3) | 2022 | $468,744 | $317,256 | 2025-12 |
| Massenergize Inc | Concord | 501(c)(3) | 2019 | $468,469 | $422,893 | 2024-12 |
| Biodiversity for A Livable Climate | Boston | 501(c)(3) | 2014 | $464,833 | $172,510 | 2025-12 |
| Green Beverly 107Q Inc | Beverly | 501(c)(3) | 2021 | $456,073 | $177,161 | 2025-06 |
| CLF Ventures Inc | Boston | 501(c)(3) | 1998 | $449,396 | $287,995 | 2025-07 |
| Wellfleet Conservation Trust | Wellfleet | 501(c)(3) | 1986 | $446,828 | $14.1 million | 2024-12 |
| Resilence Alliance Inc | Dedham | 501(c)(3) | 2000 | $444,474 | $232,562 | 2025-03 |
| Salisbury Beach Partnership Inc | Salisbury | 501(c)(3) | 2009 | $439,541 | $98,379 | 2024-12 |
| Quiet Communities Inc | Lincoln | 501(c)(3) | 2013 | $430,226 | $389,060 | 2024-12 |
| Cleantech Leaders Climate Forum | Cambridge | 501(c)(3) | 2024 | $424,695 | $261,468 | 2025-12 |
| Wareham Land Trust Inc | Wareham | 501(c)(3) | 2001 | $424,616 | $3.2 million | 2025-12 |
| Grow Native Massachusetts Inc | Lexington | 501(c)(3) | 2011 | $420,381 | $254,185 | 2025-12 |
| Opacum Land Trust | Brimfield | 501(c)(3) | 2000 | $416,169 | $2.2 million | 2024-12 |
| Clean River Project Inc | Methuen | 501(c)(3) | 2011 | $414,769 | $315,974 | 2024-12 |
| Climate Finance Action Inc | Boston | 501(c)(3) | 2020 | $406,456 | $198,571 | 2025-12 |
| Cape & Islands Self-Reliance Corporation | Cataumet | 501(c)(3) | 1980 | $401,035 | $430,092 | 2025-06 |
| New England Chapter of the International Society of Arboricul | Norwell | 501(c)(3) | 2021 | $386,716 | $211,303 | 2025-12 |
| American Friends of the Israel Union for Environmental Defense | Dedham | 501(c)(3) | 1991 | $381,040 | $325,993 | 2024-12 |
| Massachusetts Land Trust Coalition | Sudbury | 501(c)(3) | 2010 | $374,554 | $486,246 | 2025-06 |
| Outdoor Woodland Learners | Berkley | 501(c)(3) | 2017 | $365,778 | $47,903 | 2025-12 |
| Botanic Gardens Conservation International U S Inc | Boylston | 501(c)(3) | 1998 | $364,663 | $120,847 | 2024-12 |
| Wachusett Earthday | Holden | 501(c)(3) | 2008 | $360,782 | $560,686 | 2025-06 |
| E Inc | Charlestown | 501(c)(3) | 2002 | $359,622 | $88,345 | 2025-06 |
| Bolton Conservation Trust Inc | Bolton | 501(c)(3) | 1975 | $337,921 | $1.4 million | 2025-12 |
| Tree-Plenish | Mansfield | 501(c)(3) | 2020 | $321,947 | $272,714 | 2026-01 |
| Needham Community Farm Inc | Needham | 501(c)(3) | 2009 | $313,824 | $380,863 | 2023-12 |
| Climable Inc | Cambridge | 501(c)(3) | 2014 | $311,056 | $145,319 | 2024-12 |
| National Association of Asian Professionals-Boston Inc | Boston | 501(c)(3) | 1993 | $309,926 | $467,568 | 2024-12 |
| Reach Green Inc | Weston | 501(c)(3) | 2023 | $303,609 | $65,935 | 2025-12 |
| Provincetown Conservation Trust | Provincetown | 501(c)(3) | 1980 | $300,677 | $3.3 million | 2025-12 |
| Devens Eco-Efficiency Center Inc | Devens | 501(c)(3) | 2009 | $300,051 | $113,093 | 2025-06 |
| Dunstable Rural Land Trust | Dunstable | 501(c)(3) | 1989 | $296,381 | $5 million | 2026-07 |
| Massachusetts Oyster Project for Clean Water Incorporated | Concord | 501(c)(3) | 2009 | $296,113 | $284,716 | 2025-12 |
| Vineyard Open Land Foundation | Vineyard HVN | 501(c)(3) | 1970 | $292,800 | $9.6 million | 2025-04 |
| Green Cambridge Inc | Cambridge | 501(c)(3) | 2007 | $281,267 | $284,585 | 2025-06 |
| Climate Jobs Massachusetts Inc | Boston | 501(c)(3) | 2025 | $280,619 | $303,875 | 2024-12 |
| Pollinator Networks Inc | Roslindale | 501(c)(3) | 2024 | $280,450 | $122,330 | 2025-12 |
| Waltham Land Trust Inc | Waltham | 501(c)(3) | 2000 | $279,093 | $384,482 | 2025-06 |
| Cape Cod Landscape Association Inc | Medfield | 501(c)(3) | 1999 | $273,300 | $528,069 | 2025-12 |
| Andover Village Improvement Society | Andover | 501(c)(3) | 1952 | $270,498 | $7.2 million | 2024-12 |
| Sippican Lands Trust Inc | Marion | 501(c)(3) | 1987 | $268,186 | $8.1 million | 2025-12 |
| Jones River Watershed Association Inc | Kingston | 501(c)(3) | 1994 | $264,493 | $650,345 | 2024-12 |
| Lincoln Land Conservation Trust | Lincoln | 501(c)(3) | 1962 | $257,277 | $2.6 million | 2025-12 |
| Passive House New England Inc | Cambridge | 501(c)(3) | 2016 | $249,958 | $236,075 | 2024-12 |
| Cathleen Stone Island Education Center Inc | Boston | 501(c)(3) | 1951 | $244,390 | $8.8 million | 2024-12 |
| Nashoba Conservation Trust | Pepperell | 501(c)(3) | 1970 | $243,610 | $2.5 million | 2025-12 |
| Worclab Inc | Worcester | 501(c)(3) | 2011 | $241,973 | $158,371 | 2025-12 |
| Groton Conservation Trust | Groton | 501(c)(3) | 1968 | $235,402 | $6.6 million | 2024-12 |
| Westwood Land Trust Inc | Westwood | 501(c)(3) | 1999 | $228,106 | $1.2 million | 2025-12 |
| North Shore Latino Business Center Inc | Lynn | 501(c)(3) | 2021 | $215,700 | $21,257 | 2024-12 |
| Green Newton Inc | Newton | 501(c)(3) | 1990 | $212,965 | $284,426 | 2024-12 |
| Salem Alliance for the Environment Inc | Salem | 501(c)(3) | 2015 | $212,148 | $123,420 | 2024-12 |
| Acushnet River Reserve Inc | New Bedford | 501(c)(3) | 2014 | $211,796 | $733,112 | 2025-12 |
| Chilmark Pond Foundation Inc | Vineyard Haven | 501(c)(3) | 2018 | $208,218 | $398,790 | 2024-12 |
| Nantucket Garden Club Inc | Nantucket | 501(c)(3) | 1971 | $207,622 | $319,340 | 2025-08 |
| Beacon Hill Garden Club | Boston | 501(c)(3) | 1977 | $203,609 | $196,861 | 2025-06 |
| Care for the Cape & Islands Inc | Hyannis | 501(c)(3) | 2023 | $201,791 | $104,760 | 2025-12 |
| Sipson Island Trust Inc | South Orleans | 501(c)(3) | 2020 | $201,396 | $5.3 million | 2024-12 |
| Generous Gardeners Non Profit | Gloucester | 501(c)(3) | 2015 | $199,827 | $641,652 | 2025-12 |
| Built Buildings Lab Inc | Boston | 501(c)(3) | 2024 | $199,668 | $106,566 | 2025-12 |
| Worcester Roots Project | Worcester | 501(c)(3) | 2005 | $193,260 | $80,917 | 2025-12 |
| Towngreen Inc | Gloucester | 501(c)(3) | 2022 | $192,768 | $98,444 | 2024-12 |
| Mass Recycle Inc | Boston | 501(c)(3) | 1991 | $191,597 | $192,562 | 2024-12 |
| Seaside Sustainability Inc | Gloucester | 501(c)(3) | 2016 | $190,420 | $63,836 | 2024-12 |
| Climate Beacon Project Inc | Hingham | 501(c)(3) | 2025 | $188,886 | $17,363 | 2024-12 |
| The Garden Club Federation of Massachusetts Inc | Waltham | 501(c)(3) | 2004 | $188,495 | $1.5 million | 2025-06 |
| Dudley Conservation Land Trust Inc | Dudley | 501(c)(3) | 2005 | $181,299 | $2.3 million | 2025-12 |
| Building Electrification Accelerator Inc | Arlington | 501(c)(3) | 2025 | $177,956 | $82,111 | 2025-12 |
| Webster Lake Association Inc | Webster | 501(c)(3) | 2003 | $176,987 | $341,415 | 2025-12 |
| Massachusetts Interfaith Power & Light | Newton | 501(c)(3) | 2002 | $170,310 | $141,288 | 2024-12 |
| Friends of Wildwood Cemetery Inc | Amherst | 501(c)(3) | 2023 | $169,160 | $184,903 | 2026-01 |
| Inourhands-Dot-Love Incorporated | Westminster | 501(c)(3) | 2024 | $167,159 | $145,100 | 2025-12 |
| Ashburnham Conservation Trust Inc | Ashburnham | 501(c)(3) | 2000 | $166,065 | $577,514 | 2024-12 |
| Tree Eastie Inc | Boston | 501(c)(3) | 2023 | $165,223 | $105,082 | 2025-12 |
| Cleantech Leaders Roundtable | Cambridge | 501(c)(4) | 2019 | $164,046 | $35,569 | 2025-12 |
| Living Observatory Inc | Plymouth | 501(c)(3) | 2016 | $163,062 | $124,786 | 2025-12 |
| Kestrel Educational Adventures Inc | Beverly | 501(c)(3) | 2003 | $163,058 | $38,001 | 2025-08 |
| Keep Massachusetts Beautiful | Mansfield | 501(c)(3) | 2015 | $159,129 | $243,748 | 2025-06 |
| Marblehead Conservancy Inc | Marblehead | 501(c)(3) | 2002 | $158,415 | $709,093 | 2025-12 |
| Pricing Carbon Initiative Inc | South Lee | 501(c)(3) | 2018 | $158,122 | $27,356 | 2024-12 |
| Toxics Action Center Inc | Boston | 501(c)(3) | 1994 | $158,042 | $2.3 million | 2025-06 |
| Foundation for Enviromental Research | Cambridge | 501(c)(3) | 2000 | $150,569 | $240,550 | 2024-12 |
| Garden Club of the Back Bay Inc | Boston | 501(c)(3) | 2005 | $148,900 | $146,500 | 2026-06 |
| Massachusetts Coalition for Water Resources Stewardship Inc | North Andover | 501(c)(4) | 2009 | $145,770 | $124,652 | 2025-06 |
| Cape Cod Climate Change Collaborative Inc | Yarmouth Port | 501(c)(3) | 2017 | $145,270 | $144,598 | 2024-12 |
| Cities of Seven Continents Inc | Newton Highlands | 501(c)(3) | 2024 | $144,307 | $23,143 | 2024-12 |
| Massachusetts Forest Trust | Marlborough | 501(c)(3) | 1983 | $138,896 | $174,002 | 2025-06 |
| Orenda Wildlife Land Trust Inc | W Barnstable | 501(c)(3) | 2002 | $137,194 | $5.7 million | 2024-12 |
| Pocasset Beach Improvement Association Inc | Boxford | 501(c)(7) | 2025 | $135,548 | $93,476 | 2025-09 |
| Black Swan Lab Inc | Cambridge | 501(c)(3) | 2024 | $135,050 | $61,620 | 2024-12 |
| Cape Ann Vernal Pond Team Inc | Gloucester | 501(c)(3) | 2006 | $134,545 | $44,479 | 2025-12 |
| Western Massachusetts Climbers Coalition | Amherst | 501(c)(3) | 2005 | $134,175 | $519,035 | 2025-12 |
| Lake Archer Association Corporation | Wrentham | 501(c)(3) | 2018 | $129,515 | $67,505 | 2025-12 |
| Mass Parks for All | Jamaica Plain | 501(c)(3) | 2015 | $128,971 | $67,862 | 2025-12 |
| Navy Yard Garden & Art Inc | Charlestown | 501(c)(3) | 2018 | $127,506 | $40,444 | 2025-12 |
| Resilient Roots Inc | W Barnstable | 501(c)(3) | 2017 | $126,779 | $377,201 | 2025-12 |
| Kinship Farm Corporation | Beverly | 501(c)(3) | 2022 | $125,583 | $22,713 | 2025-12 |
| Social and Environmental Research | Shelburne FLS | 501(c)(3) | 1996 | $125,094 | $24,061 | 2025-12 |
| Waquoit Bay Reserve Foundation Inc | Waquoit | 501(c)(3) | 2012 | $120,150 | $101,198 | 2025-06 |
| Whetstone Wood Trust Fund | Lincoln | 501(c)(3) | 2003 | $118,548 | $4.8 million | 2025-06 |
| Stratleade Sustainability Educationinc | Gloucester | 501(c)(3) | 2007 | $118,490 | $1,553 | 2025-09 |
| Seekonk Land Conservation Trust | Seekonk | 501(c)(3) | 1969 | $118,169 | $4.4 million | 2024-12 |
| Lutherans Restoring Creation | Braintree | 501(c)(3) | 2017 | $117,329 | $89,188 | 2025-12 |
| Ecological Landscape Alliance Inc | Boylston | 501(c)(3) | 1999 | $116,530 | $107,844 | 2025-06 |
| Connect Us Altwheels Inc | Cambridge | 501(c)(3) | 2008 | $113,919 | $438,914 | 2025-12 |
| Tellus Institute Inc | North Quincy | 501(c)(3) | 1977 | $113,181 | $263,813 | 2024-12 |
| Ocean River Institute Inc | Cambridge | 501(c)(3) | 2007 | $110,602 | $20,034 | 2026-01 |
| Trail Animals Running Club | Somerville | 501(c)(3) | 2022 | $108,286 | $72,109 | 2025-12 |
| Long Pond Association Inc | Lakeville | 501(c)(3) | 2022 | $108,157 | $67,711 | 2025-06 |
| Tamarack Hollow Nature and Cultural Center | Windsor | 501(c)(3) | 2014 | $108,153 | $316,879 | 2025-12 |
| Taunton River Watershed Alliance Inc | Taunton | 501(c)(3) | 1989 | $107,328 | $140,132 | 2025-06 |
| Carlisle Conservation Foundation Inc | Carlisle | 501(c)(3) | 1963 | $107,271 | $604,968 | 2025-12 |
| Tuckernuck Land Trust Inc | Nantucket | 501(c)(3) | 1997 | $106,501 | $5.3 million | 2024-12 |
| Garden School of Beverly | Beverly | 501(c)(3) | 2018 | $106,191 | $71,765 | 2025-12 |
| Orleans Pond Coalition Inc | Orleans | 501(c)(3) | 2005 | $105,560 | $124,122 | 2025-12 |
| Great Barrington Land Conservancy Inc | GT Barrington | 501(c)(3) | 1991 | $105,165 | $841,805 | 2025-12 |
| Mass Central Rail Trail Alliance Inc | Sudbury | 501(c)(3) | 2001 | $105,010 | $27,654 | 2025-06 |
| Zerocarbonma Inc | Brookline | 501(c)(4) | 2022 | $103,330 | $124,901 | 2024-12 |
| Brewster Ponds Coalition | Brewster | 501(c)(3) | 2014 | $103,001 | $260,483 | 2025-12 |
| Berkshire Bird Observatory | GT Barrington | 501(c)(3) | 2024 | $100,517 | $16,899 | 2024-12 |
| Friend of Pleasant Bay Inc | Harwich | 501(c)(3) | 1986 | $97,953 | $170,510 | 2025-06 |
| Re Green Springfield Inc | Springfield | 501(c)(3) | 2013 | $96,102 | $23,493 | 2024-12 |
| East Chop Association Inc | Oak Bluffs | 501(c)(3) | 1994 | $95,610 | $36.8 million | 2025-12 |
| Massachusetts Water Environment Association Inc | Woburn | 501(c)(3) | 2011 | $93,332 | $126,911 | 2025-06 |
| Hoosic River Watershed Association Inc | Williamstown | 501(c)(3) | 1987 | $93,289 | $264,484 | 2025-12 |
| Community Outreach Group Inc | Cambridge | 501(c)(3) | 1998 | $87,697 | $50,378 | 2024-12 |
| Garden Club Federation of Massachusetts Inc | W Hyannisport | 501(c)(3) | 2004 | $83,063 | $83,887 | 2025-06 |
| Boxford Trails Association | Boxford | 501(c)(3) | 1980 | $82,958 | $1.4 million | 2025-12 |
| Restore the North Woods Inc | Lincoln | 501(c)(3) | 1993 | $80,611 | $182,839 | 2025-06 |
| Red Lily Pond Project Association Inc | Centerville | 501(c)(3) | 1997 | $78,848 | $208,860 | 2025-12 |
| Remineralize the Earth Inc | Northampton | 501(c)(3) | 1996 | $76,722 | $92,939 | 2025-12 |
| Noanett Garden Club | Dover | 501(c)(3) | 1977 | $76,510 | $77,217 | 2026-04 |
| Marthas Vineyard Garden Club Inc | Vineyard HVN | 501(c)(3) | 1985 | $76,445 | $88,305 | 2024-12 |
| Ipci-Usa Inc | Whitman | 501(c)(3) | 2002 | $75,606 | $143,306 | 2025-06 |
| Goldthwait Reservation Inc | Marblehead | 501(c)(3) | 2024 | $73,399 | $9.3 million | 2024-12 |
| Wild Earth Institute Inc | Petersham | 501(c)(3) | 2021 | $70,089 | $55,895 | 2023-12 |
| Massachusetts Master Gardener Association Inc | Framingham | 501(c)(3) | 2009 | $67,344 | $514,984 | 2024-12 |
| Sustainable Marblehead | Marblehead | 501(c)(3) | 2018 | $66,948 | $59,311 | 2025-06 |
| Rochester Land Trust Inc | Rochester | 501(c)(3) | 1997 | $62,581 | $2.9 million | 2025-12 |
| Ack R A T S Inc | Nantucket | 501(c)(3) | 2021 | $61,637 | $149,932 | 2025-12 |
| Cohasset Lightkeepers Corporation | Cohasset | 501(c)(3) | 1996 | $61,292 | $216,947 | 2025-12 |
| Richmond Land Trust Inc State Road | Richmond | 501(c)(3) | 1994 | $60,079 | $2.3 million | 2025-12 |
| Climate Direct Action Education Fund Incorporated | Boston | 501(c)(3) | 2025 | $60,022 | $40,286 | 2024-12 |
| Nantucket Deconstruction and Salvage | Nantucket | 501(c)(3) | 2025 | $59,956 | $45,229 | 2025-12 |
| Friends of Endicott Park Inc | Danvers | 501(c)(3) | 1993 | $58,228 | $91,520 | 2025-08 |
| Blackstone River Coalition Inc | Worcester | 501(c)(3) | 2007 | $57,638 | $100,871 | 2025-12 |
| Katama Airfield Trust | Edgartown | 501(c)(3) | 1999 | $56,960 | $83,092 | 2025-12 |
| Friends of Ashland Council On Aging Inc | Ashland | 501(c)(3) | 2000 | $56,251 | $5,842 | 2025-12 |
| Planetary Health Inc | Chestnut Hill | 501(c)(3) | 2001 | $55,587 | $32,880 | 2025-12 |
| Big Alum Lake Association Inc | Fiskdale | 501(c)(4) | 2022 | $55,097 | $80,644 | 2025-12 |
| Arlington Land Trust Inc | Arlington | 501(c)(3) | 2000 | $54,949 | $813,528 | 2025-12 |
| Salisbury Beach Betterment Association Inc | Salisbury | 501(c)(3) | 2013 | $53,160 | $74,772 | 2024-06 |
| Global Coral Reef Alliance Inc | Cambridge | 501(c)(3) | 1992 | $52,708 | $16,408 | 2025-12 |
| Westborough Community Land Trust Inc | Westborough | 501(c)(3) | 1997 | $52,298 | $1.6 million | 2024-12 |
| Cape Ann Trail Stewards Inc | Essex | 501(c)(3) | 2013 | $51,236 | $29,007 | 2025-12 |
| Cool Sandy Beach Community Water System Inc | Rutland | 501(c)(4) | 1999 | $49,892 | $121,493 | 2025-12 |
| Beaver Lake Trust Inc | Ware | 501(c)(3) | 2005 | $49,626 | $59,091 | 2025-12 |
| Northeast Outdoors Foundation Inc | E Longmeadow | 501(c)(3) | 2009 | $49,578 | $46,940 | 2024-12 |
| Clinton Greenway Conservation Trust Inc | Clinton | 501(c)(3) | 2002 | $49,213 | $672,996 | 2025-12 |
| Gulf of Maine Institute Inc | West Newbury | 501(c)(3) | 2002 | $48,958 | $28,868 | 2024-12 |
| Attleboro Land Trust Inc | Attleboro | 501(c)(3) | 1991 | $48,252 | $9.2 million | 2025-12 |
| Friends of the Mary Ellen Welch Greenway Inc | Boston | 501(c)(3) | 2016 | $48,106 | $364,697 | 2025-06 |
| 350 Org Action Fund | Boston | 501(c)(4) | 2008 | $47,893 | $222,953 | 2025-09 |
| West Springfield Garden Club | W Springfield | 501(c)(3) | 2004 | $47,312 | $52,749 | 2026-06 |
| Grafton Land Trust Inc | Grafton | 501(c)(3) | 1988 | $44,905 | $6.9 million | 2025-10 |
| Bio-Amazonia Conservation International Inc | Weymouth | 501(c)(3) | 1994 | $44,457 | $50,922 | 2023-12 |
| Foundation for A Green Future | Boston | 501(c)(3) | 2026 | $44,003 | $3,993 | 2021-12 |
| Brookline Greenspace Alliance Inc | Brookline VLG | 501(c)(3) | 1990 | $43,627 | $311,510 | 2025-12 |
| Friends of Lake Quannapowitt | Wakefield | 501(c)(3) | 1992 | $43,554 | $334,954 | 2024-12 |
| Garden Club Federation of Massachusetts Inc | Dennis | 501(c)(3) | 2004 | $43,469 | $82,108 | 2025-06 |
| Athol Bird and Nature Club Inc | Athol | 501(c)(3) | 1999 | $42,040 | $82,235 | 2025-08 |
| Coastal Trails Coalition Inc | Newburyport | 501(c)(3) | 1998 | $41,363 | $177,700 | 2025-12 |
| Massachusetts Housing and Climate Innovation Center Inc | S Yarmouth | 501(c)(3) | 2024 | $41,000 | $6,210 | 2025-12 |
| Hopkinton Area Land Trust Inc | Woodville | 501(c)(3) | 1995 | $40,756 | $279,070 | 2026-03 |
| Chelmsford Land Conservation Trust Inc | Chelmsford | 501(c)(3) | 1989 | $40,361 | $922,941 | 2025-12 |
| Friends of David Mugar Way | Boston | 501(c)(3) | 2025 | $39,872 | $31,123 | 2025-12 |
| Stockbridge Land Trust Inc | Stockbridge | 501(c)(3) | 1989 | $39,555 | $384,798 | 2024-12 |
| Garden Club Federation of Massachusetts Inc | Concord | 501(c)(3) | 2004 | $38,708 | $36,333 | 2025-06 |
| Urban Beekeeping Laboratory and Bee Sanctuary Inc | Boston | 501(c)(3) | 2015 | $38,591 | $55,212 | 2024-12 |
| Oyster Pond Environmental Trust Inc | Woods Hole | 501(c)(3) | 1996 | $37,817 | $2.4 million | 2025-12 |
| Garden Club Federation of Massachusetts Inc | Hull | 501(c)(3) | 2004 | $37,007 | $45,626 | 2026-06 |
| Egremont Land Trust Inc | S Egremont | 501(c)(3) | 1988 | $36,022 | $752,335 | 2025-12 |
| The Nuclear Decommissioning Collaborative Inc | Arlington | 501(c)(3) | 2015 | $35,802 | $12,808 | 2024-12 |
| Andover Garden Club | Andover | 501(c)(3) | 1999 | $35,761 | $53,283 | 2026-06 |
| North Quabbin Trails Association Inc | Orange | 501(c)(3) | 2019 | $35,579 | $36 | 2024-12 |
| New England Equestrian Land MGMNT Conservation Corporation | Athol | 501(c)(3) | 2003 | $34,658 | $81,751 | 2025-06 |
| Boxborough Conservation Trust Inc | Boxborough | 501(c)(3) | 1998 | $34,591 | $344,967 | 2025-12 |
| Marathon Daffodils Inc | Charlestown | 501(c)(3) | 2018 | $32,038 | $10,457 | 2024-12 |
| Worcester Garden Club Inc | Worcester | 501(c)(3) | 1967 | $31,470 | $162,643 | 2025-06 |
| Chatham Garden Club Inc | Chatham | 501(c)(3) | 2011 | $30,511 | $68,507 | 2025-12 |
| Fenway Garden Society | Boston | 501(c)(3) | 2006 | $28,716 | $244,119 | 2024-12 |
| Reading Open Land Trust Inc | Reading | 501(c)(3) | 1980 | $28,123 | $999,215 | 2025-06 |
| Nature Preserve Inc | Pembroke | 501(c)(3) | 2018 | $27,243 | $306,381 | 2025-12 |
| Pocasset Water Quality Coalition Inc | Pocasset | 501(c)(3) | 2020 | $27,200 | $24,700 | 2025-12 |
| Popponesset Water Stewardship Alliance Inc | Abington | 501(c)(3) | 2023 | $27,032 | $3,071 | 2025-12 |
| Charlestown Sprouts Inc | Charlestown | 501(c)(3) | 2019 | $26,912 | $76,679 | 2025-12 |
| Sportsmens National Land Trust Massachusetts Chapter Inc | Agawam | 501(c)(3) | 2008 | $26,248 | $1.1 million | 2025-12 |
| Friends of the Mashpee National Wildlife Refuge Inc | Mashpee | 501(c)(3) | 1996 | $25,895 | $49,256 | 2025-12 |
| Garden Club Federation of Massachusetts Inc | Falmouth | 501(c)(3) | 2004 | $24,676 | $45,870 | 2026-06 |
| Lake Sargent Association Inc | Leicester | 501(c)(3) | 2022 | $24,064 | $26,130 | 2025-12 |
| Monterey Preservation Land Trust Inc | Monterey | 501(c)(3) | 1986 | $23,717 | $3.2 million | 2025-12 |
| Garden Club Fedration of Massachusetts Inc | Hingham | 501(c)(3) | 2004 | $23,593 | $89,194 | 2025-06 |
| Quaboag Quacumquasit Lake Association Inc | E Brookfield | 501(c)(3) | 1999 | $23,488 | $71,152 | 2025-12 |
| Sunbow 5 Foundation Inc | Hadley | 501(c)(3) | 1990 | $23,486 | $326,622 | 2025-12 |
| Friends of Nashawannuck Pond Inc | Easthampton | 501(c)(3) | 2023 | $22,499 | $43,227 | 2026-03 |
| Fosters Pond Corporation | Andover | 501(c)(3) | 2005 | $21,717 | $253,718 | 2025-12 |
| Minnechaug Land Trust Inc | Hampden | 501(c)(3) | 1994 | $21,119 | $332,750 | 2025-12 |
| Massachusetts Chapter of the American Chestnut Foundation Corp | Uxbridge | 501(c)(3) | 2001 | $20,620 | $94,115 | 2025-12 |
| Garden Club Federation of Massacuse TTS Inc | Osterville | 501(c)(3) | 2004 | $20,518 | $87,117 | 2025-06 |
| Milton Garden Club | Milton VLG | 501(c)(3) | 1998 | $19,891 | $56,010 | 2025-06 |
| Dudley Pond Associates Inc | Wayland | 501(c)(3) | 1997 | $19,706 | $186,988 | 2024-12 |
| Southeastern Mass Regional Hazardous Materials Committee Inc | Foxboro | 501(c)(3) | 1997 | $18,204 | $77,402 | 2024-12 |
| Wakullah Street Community Garden Incorporated | Boston | 501(c)(3) | 2022 | $18,029 | $1 | 2025-11 |
| Falmouth Water Stewards Inc | Falmouth | 501(c)(3) | 1995 | $17,570 | $46,235 | 2025-12 |
| Friends of Ringgold Park Inc | Boston | 501(c)(3) | 2014 | $17,330 | $42,531 | 2024-12 |
| Garden Club Federation of Massachusetts Inc | Williamstown | 501(c)(3) | 2004 | $17,300 | $127,652 | 2026-06 |
| Charles River Clean Up Boat | Boston | 501(c)(3) | 2004 | $17,288 | $22,926 | 2025-12 |
| Ocean Arks International Inc | N Falmouth | 501(c)(3) | 1982 | $17,171 | $19,901 | 2023-10 |
| Garden Club Federation of Massachusetts Inc | Onset | 501(c)(3) | 2004 | $17,032 | $31,618 | 2025-06 |
| Barnstable County Water Utilities Association | East Harwich | 501(c)(3) | 1999 | $16,761 | $126,107 | 2025-06 |
| Old Ladies Against Underwater Garbage Inc | N Falmouth | 501(c)(3) | 2025 | $16,322 | $10,326 | 2025-12 |
| Southeastern Massachusetts Pine Barrens Alliance | Plymouth | 501(c)(3) | 2014 | $16,266 | $26,480 | 2025-12 |
| Amesbury Outdoors Inc | Amesbury | 501(c)(3) | 2003 | $16,214 | $28,252 | 2025-12 |
| Becket Land Trust Inc | Becket | 501(c)(3) | 1992 | $15,650 | $101,050 | 2025-12 |
| Cape Cod Salties Foundation Inc | Dennis | 501(c)(3) | 2018 | $15,461 | $39,244 | 2025-12 |
| Arboretum Park Conservancy | Boston | 501(c)(3) | 1992 | $15,045 | $42,981 | 2026-06 |
| Housatonic River Initiative Inc | Lee | 501(c)(3) | 1995 | $13,963 | $145,939 | 2025-12 |
| Garden Club Federation of Massachusetts Inc | Needham | 501(c)(3) | 2004 | $13,682 | $242,114 | 2025-06 |
| Garden Club Federation of Massachusetts Inc | Haverhill | 501(c)(3) | 2004 | $13,652 | $35,058 | 2025-06 |
| Garden Club Federation of Massachusetts Inc | Orleans | 501(c)(3) | 2004 | $13,251 | $75,015 | 2025-06 |
| Somerville Teachers Scholarship Fun D Inc | Somerville | 501(c)(3) | 2026 | $12,915 | $125,319 | 2025-09 |
| Pear Square Collaborative Inc | Dorchester | 501(c)(3) | 2021 | $12,600 | $18,800 | 2025-06 |
| Lake Winnekeag Associations Inc | Ashburnham | 501(c)(3) | 2022 | $12,576 | $389,879 | 2025-12 |
| Recycling Rules Inc | Provincetown | 501(c)(3) | 2011 | $12,345 | $43,607 | 2025-12 |
| Friends of Spy Pond Park | E Arlington | 501(c)(3) | 1998 | $11,734 | $52,275 | 2025-12 |
| North Shore Paddlers Network Inc | Reading | 501(c)(3) | 2003 | $11,129 | $18,359 | 2025-12 |
| Citizens for the Protection of Waquoit Bay Inc | Waquoit | 501(c)(3) | 1992 | $10,700 | $58,404 | 2025-12 |
| Friends of Adams Farm Inc | Walpole | 501(c)(3) | 2025 | $10,497 | $106,745 | 2020-12 |
| Fox Hill Garden Club Inc | Wellesley | 501(c)(3) | 1988 | $9,621 | $61,818 | 2025-06 |
| Save Chebacco Trails & Watershed Inc | S Hamilton | 501(c)(3) | 2021 | $9,314 | $6,549 | 2025-12 |
| Fall River Garden Club | Fall River | 501(c)(3) | 2014 | $9,274 | $7,745 | 2026-06 |
| Healthy Home Healthy Planet Incorporated | Marblehead | 501(c)(3) | 2022 | $9,128 | $127 | 2025-12 |
| Four Mile Pond Preservation Group Inc | Boxford | 501(c)(3) | 2017 | $9,109 | $34,776 | 2024-12 |
| Victory Garden Crockett Foundation | N Falmouth | 501(c)(3) | 2022 | $9,052 | $330,724 | 2025-12 |
| Halls Creek Preservation Fund Inc | W Hyannisport | 501(c)(3) | 2010 | $8,688 | $34,327 | 2024-12 |
| Friends of Buttonwood Park Incorporated | New Bedford | 501(c)(3) | 1991 | $8,015 | $90,020 | 2026-04 |
| Farmland Conservancy Inc | Sterling | 501(c)(3) | 1997 | $7,998 | $33,989 | 2025-12 |
| Green Rows of Waltham Inc | Waltham | 501(c)(3) | 2024 | $7,937 | $18,518 | 2025-12 |
| Blackstone Headwaters Coalition | Worcester | 501(c)(3) | 2002 | $7,102 | $9,556 | 2025-12 |
| Land Preservation Society of Norton Inc | Norton | 501(c)(3) | 1971 | $7,030 | $11.3 million | 2025-12 |
| Sterling Land Trust Inc | Sterling | 501(c)(3) | 2014 | $6,471 | $1.5 million | 2025-12 |
| Lancaster Garden Club | S Lancaster | 501(c)(3) | 2019 | $6,450 | $22,756 | 2024-06 |
| Tri-Lakes Watershed Association Inc | Belchertown | 501(c)(3) | 1997 | $6,253 | $20,828 | 2025-06 |
| Friends of Bassing Beach Inc | Cohasset | 501(c)(3) | 2021 | $6,163 | $46,354 | 2025-12 |
| Keep Natick Beautiful Inc | Natick | 501(c)(3) | 2016 | $6,098 | $3,705 | 2025-12 |
| Orleans Improvement Association Inc | Orleans | 501(c)(3) | 1998 | $6,093 | $48,181 | 2025-12 |
| Global Initiatives Inc | Gloucester | 501(c)(3) | 1991 | $6,000 | $34,659 | 2025-12 |
| Preserving Tauntons Future Inc | East Taunton | 501(c)(3) | 2015 | $5,889 | $2,907 | 2024-12 |
| Southwick Land Trust | Southwick | 501(c)(3) | 2025 | $5,691 | $3,431 | 2025-12 |
| Friends of Falmouth Bikeways Inc | N Falmouth | 501(c)(3) | 2010 | $5,643 | $71,231 | 2025-12 |
| Yarmouth Conservation Trust | Yarmouthport | 501(c)(3) | 2019 | $5,409 | $540,494 | 2026-02 |
| Northeast Judging Center of the American Orchid Society | Dorchester | 501(c)(3) | 2018 | $5,121 | $20,997 | 2025-12 |
| Friends of Pine Hill Cemetery | Westfield | 501(c)(3) | 2015 | $4,787 | $77,888 | 2024-12 |
| Citizens Research and Environmental Watch Inc | Concord | 501(c)(3) | 1996 | $4,105 | $3,868 | 2025-12 |
| West Springfield Environmental Committee Inc | W Springfield | 501(c)(3) | 2014 | $4,103 | $3,643 | 2024-12 |
| Truro Environmental Defense Fund Inc | Truro | 501(c)(3) | 2021 | $3,600 | $8,641 | 2025-12 |
| Canal District Alliance Inc | Worcester | 501(c)(3) | 2022 | $3,297 | $182,159 | 2025-12 |
| Friends of Rolf E Sylvan Gardens | Chatham | 501(c)(3) | 2014 | $3,021 | $21,709 | 2025-12 |
| Charlton Heritage Preservation Trust | Charlton Dept | 501(c)(3) | 2023 | $2,926 | $1.3 million | 2025-12 |
| Green Mountain Club Worcester Section Inc | Worcester | 501(c)(3) | 2009 | $2,338 | $135,903 | 2025-09 |
| Hull Land Conservation Trust | Hull | 501(c)(3) | 2009 | $2,326 | $238,792 | 2026-01 |
| Beverly Improvement Society | Beverly | 501(c)(4) | 2024 | $1,585 | $176,406 | 2025-12 |
| Conservation of African Nature Foundation | Concord | 501(c)(3) | 2022 | $1,500 | $48,777 | 2025-12 |
| Global Classroom Inc | Shelburne FLS | 501(c)(3) | 2002 | $1,200 | $662,583 | 2025-12 |
| Pipe Line Awareness Network for the Northeast Inc | Ashby | 501(c)(3) | 2017 | $942 | $30,960 | 2025-12 |
| Horticultural Society of Boxford Inc | Boxford | 501(c)(3) | 2000 | $845 | $89,394 | 2025-12 |
| Save Twin Brooks Inc | Hyannis | 501(c)(3) | 2022 | $772 | $24,761 | 2024-12 |
| Subversive Gardener Inc | Beverly | 501(c)(3) | 2019 | $618 | $642 | 2025-12 |
| Duxbury Grad Nite Inc | Duxbury | 501(c)(3) | 2014 | $592 | $22,479 | 2023-12 |
| Fore River Residents Against the Compressor Station | Weymouth | 501(c)(4) | 2019 | $563 | $26,641 | 2025-12 |
| Concerned Citizens of Franklin County | Greenfield | 501(c)(3) | 2012 | $512 | $688 | 2025-12 |
| Savery Pond Conservancy | Winchester | 501(c)(3) | 2019 | $500 | $7,451 | 2025-12 |
| North Amherst Community Farm Inc | North Amherst | 501(c)(3) | 2006 | $409 | $364,493 | 2025-06 |
| Stony Lane Incorporated | Petersham | 501(c)(3) | 2011 | $310 | $15,001 | 2024-12 |
| Parker River Clean Water Association | Byfield | 501(c)(3) | 1997 | $308 | $10,374 | 2025-06 |
| North Central Pathway Inc | Winchendon | 501(c)(3) | 2000 | $237 | $7,059 | 2025-12 |
| Nantucket Community Association | Nantucket | 501(c)(3) | 1998 | $55 | $21,860 | 2025-12 |
| Whitmans Pond Association Inc | Weymouth | 501(c)(3) | 2000 | $16 | $28,722 | 2023-06 |
| Nature Walks Conservation Society | Tyngsboro | 501(c)(3) | 2012 | $15 | $62,461 | 2025-12 |
| Swift River Preservation Association Inc | Belchertown | 501(c)(4) | 2011 | $1 | $2,141 | 2024-12 |
| 100treesproject Inc | Boston | 501(c)(3) | 2025 | |||
| 2020 Project Inc | Roxbury | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| 3RS 4 Us | North Andover | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| AARSHI&FRIENDS | Braintree | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Adams Beautification Association | Adams | 501(c)(3) | 2026 | |||
| Advocates for Conservation of Oakhams Rural Nature & Safety | Oakham | 501(c)(3) | 2025 | |||
| Advocates for Nantucket Sound Inc | Hyannis | 501(c)(4) | 2007 | $0 | $5,992 | 2024-12 |
| Afghanistan Samsortya Inc | Winchester | 501(c)(3) | 2010 | $0 | $0 | 2024-09 |
| Aid Foundation Inc | Worcester | 501(c)(3) | 2017 | $0 | $0 | 2025-05 |
| Alewife Neighbors Inc | Cambridge | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Alford Land Trust Inc | Alford | 501(c)(3) | 2003 | $0 | $197,550 | 2025-06 |
| All Hands Alliance | Newburyport | 501(c)(3) | 2020 | $0 | $0 | 2023-12 |
| All Things H E R | Brockton | 501(c)(3) | 2025 | |||
| Alternative Fuel Foundation Inc | Topsfield | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Alus America Inc | Newton | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| American Rhododendron Society | Milford | 501(c)(3) | 1974 | $0 | $0 | 2025-08 |
| Amesbury Hospital Charitable Trust | Amesbury | 501(c)(3) | 2026 | |||
| Anaphero Collective Foundation | Brookline | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Andover Community Garden Association Inc | Andover | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Andover Trail Committee Inc | Andover | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Arboretum at Linden Ponds | Hingham | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Ashby Land Trust Inc | Ashby | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Ashland Garden Club | Ashland | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Assabet River Rail Trail Inc | Marlborough | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Bagelparrot Conservation Alliance Inc | Chestnut Hill | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Baker Pond Association Inc | Charlton City | 501(c)(3) | 1992 | $0 | $0 | 2025-12 |
| Barnstable Ponds Coalition | Marstons MLS | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Beech Tree Trust | Boston | 501(c)(3) | 2001 | $1.2 million | 2025-06 | |
| Belleville Improvement Society | Newburyport | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Bellingham Garden Club of Massachusetts | Franklin | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Berkshire Preservation Inc | Stockbridge | 501(c)(3) | 2025 | |||
| Better Future Action | Cambridge | 501(c)(4) | 2017 | $0 | $0 | 2024-12 |
| Beverly Conservation Land Trust Inc | Beverly | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Beyond Ktaadn Inc | New Salem | 501(c)(3) | 2013 | $0 | $0 | 2025-06 |
| Billy Ward Pond Improvement Association Inc | Ashburnham | 501(c)(3) | 1995 | $0 | $0 | 2025-07 |
| Black Coral Inc | Boston | 501(c)(3) | 2021 | $0 | $0 | 2023-12 |
| Black Dog Foundation | Boston | 501(c)(3) | 2009 | $62,498 | 2025-12 | |
| Blackstone Valley Angel of Hope | Uxbridge | 501(c)(3) | 2025 | $0 | $0 | 2023-12 |
| Blackstone and Millville Garden Club | Blackstone | 501(c)(3) | 2022 | $2,817 | 2025-12 | |
| Blue Institute Inc | Barnstable | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Blue Shirt Justice League Inc | W Hyannisport | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Boston Area Beekeepers Association Inc | Hyde Park | 501(c)(3) | 2019 | $0 | $0 | 2025-10 |
| Boston Area Solar Energy Association Inc | Somerville | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Branch Pond Association Inc | South Hadley | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
Every nonprofit in Massachusetts
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.