Environment nonprofits in Maine

Environment nonprofits in Maine. Browse 497 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Garden Institute at Merry Gardens

    EIN 010510573 · Headquarters: Camden, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Georges Pond Association

    EIN 474435195 · Headquarters: Franklin, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Georges River Land Trust

    EIN 010424837 · Headquarters: Rockland, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Georges River Tidewater Assoc

    EIN 043031284 · Headquarters: Thomaston, ME, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  5. Giving Tree Learning Center

    EIN 931629216 · Headquarters: ROCKPORT, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  6. Godfrey Cove Conservancy Inc

    EIN 203873371 · Headquarters: YORK HARBOR, ME, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  7. Grace Hudowalski Charitable Trust

    EIN 146179116 · Headquarters: WINDHAM, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Great Diamond Island Land Preserve

    EIN 204369077 · Headquarters: South Portland, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Great Works Regional Land Trust

    EIN 222736228 · Headquarters: SOUTH BERWICK, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Greater Lovell Land Trust Inc

    EIN 222724055 · Headquarters: Lovell, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Greater Minnehonk Lake Association

    EIN 271096132 · Headquarters: Mount Vernon, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Greater Pushaw Lake Association Inc

    EIN 800610951 · Headquarters: Stillwater, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Green Campus Inc

    EIN 474329158 · Headquarters: Portland, ME, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  14. Green Lake Association

    EIN 421764960 · Headquarters: Holden, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. GreenWood

    EIN 010545281 · Headquarters: South Berwick, ME, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  16. Growsmart Maine

    EIN 810620660 · Headquarters: AUGUSTA, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Hancock and Sand Ponds Association

    EIN 461274687 · Headquarters: Denmark, ME, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Hancock County Planning Commission

    EIN 010310087 · Headquarters: ELLSWORTH, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Harpswell Heritage Land Trust

    EIN 222552116 · Headquarters: Harpswell, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. Harriman Pond Lake Association

    EIN 413740854 · Headquarters: Dedham, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Hartley Mason Reservation Co Jeffrey W Mcconnell

    EIN 010486407 · Headquarters: YORK, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Hedgehog Mountain Land Trust Inc

    EIN 223225939 · Headquarters: Eagle Lake, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Herring Gut Coastal Science Center

    EIN 920902723 · Headquarters: Port Clyde, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Highland Lake Association

    EIN 010489647 · Headquarters: Windham, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Holbrook Island Sanctuary

    EIN 016011445 · Headquarters: Brooksville, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Holden Land Trust

    EIN 161719924 · Headquarters: Holden, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Home Start

    EIN 251907421 · Headquarters: Peaks Island, ME, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  28. Howard Pond Preservation Association

    EIN 010353283 · Headquarters: Hanover, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Hurricane Island Outward Bound School

    EIN 046089174 · Headquarters: CAMDEN, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Inland Woods Trails

    EIN 453069168 · Headquarters: BETHEL, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. International Peace Park Expeditions Inc

    EIN 271582462 · Headquarters: Scarborough, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Island Culinary & Ecological Center

    EIN 800388253 · Headquarters: Deer Isle, ME, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  33. Island Falls Lakes Association

    EIN 471722224 · Headquarters: ISLAND FALLS, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Island Heritage Trust Inc

    EIN 010426251 · Headquarters: DEER ISLE, ME, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  35. Island Pond Watershed Association

    EIN 205655791 · Headquarters: Raymond, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Island Rover Foundation

    EIN 010539991 · Headquarters: Freeport, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Izaak Walton League of America

    EIN 753125197 · Headquarters: Holden, ME, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  38. JustME for JustUS

    EIN 932999628 · Headquarters: South Freeport, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Keep It Grand

    EIN 454756517 · Headquarters: Danforth, ME, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  40. Keep the Kennebunk Dams Save the Mousam

    EIN 821779165 · Headquarters: Kennebunk, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Kennebec Estuary Land Trust

    EIN 010446468 · Headquarters: BATH, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. Kennebec River Company

    EIN 822589146 · Headquarters: Kingfield, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Kennebec River Restoration Trust

    EIN 413894298 · Headquarters: Brunswick, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Kennebec Riverview Inc

    EIN 331888240 · Headquarters: BATH, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Kennebec Valley Garden Club

    EIN 010361333 · Headquarters: Augusta, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Kennebunk Land Trust

    EIN 237221345 · Headquarters: Kennebunk, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Kennebunkport Conservation Trust

    EIN 237271573 · Headquarters: Cape Porpoise, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Keoka Lake Assn

    EIN 820679262 · Headquarters: Waterford, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Keyes Pond Environmental Protection Association

    EIN 871616709 · Headquarters: Cumberland Center, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Kezar Lake Watershed Association

    EIN 237122071 · Headquarters: LOVELL, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. Kittery Land Trust Inc

    EIN 222858759 · Headquarters: KITTERY, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. Lake Anasagunticook Association

    EIN 943480860 · Headquarters: Canton, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Lake Arrowhead Conservation Council

    EIN 261154163 · Headquarters: NORTH WATERBORO, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  54. Lake Auburn Watershed Neighborhood Association (Lawna)

    EIN 263658105 · Headquarters: AUBURN, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Lake Stewards of Maine - Maine Volunteer Lake Monitoring Program

    EIN 010502630 · Headquarters: AUBURN, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Lake Weserrunset Association

    EIN 010537348 · Headquarters: Skowhegan, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Lakes Assocation of Norway Maine Inc

    EIN 300034585 · Headquarters: NORWAY, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Lakes Environmental Association

    EIN 237120682 · Headquarters: BRIDGTON, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  59. Landscape Horticulture Club

    EIN 900918525 · Headquarters: orono, ME, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  60. Laudholm Trust

    EIN 010380763 · Headquarters: WELLS, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Lcrc Land Conservation Corp

    EIN 320400962 · Headquarters: Damariscotta, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Litterpic Inc

    EIN 882549690 · Headquarters: Wells, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Little Sebago Lake Association

    EIN 010437253 · Headquarters: WINDHAM, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Long Creek Watershed Management District

    EIN 272243654 · Headquarters: WINDHAM, ME, USA · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990

  65. Long Pond Association

    EIN 010967755 · Headquarters: Parsonsfield, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Loon Echo Land Trust Inc

    EIN 222966924 · Headquarters: Bridgton, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Loon Pond Betterment Association

    EIN 270829407 · Headquarters: Acton, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Louds Island Conservancy

    EIN 933951202 · Headquarters: BREMEN, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. Madawaska Long Lake Property Owners

    EIN 300403073 · Headquarters: Madawaska, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Mahoosuc Land Trust Inc

    EIN 010447619 · Headquarters: Bethel, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Maine Appalachian Trail Land Trust

    EIN 010717546 · Headquarters: Portland, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Maine Association of Conservation Districts

    EIN 222503739 · Headquarters: PORTLAND, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Maine Audubon Society

    EIN 010248780 · Headquarters: Falmouth, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Maine Chapter of the American Chestnut Foundation

    EIN 010530623 · Headquarters: Winterport, ME, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Maine Clammers Association

    EIN 260269003 · Headquarters: Freeport, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Maine Climate Action Now

    EIN 882891721 · Headquarters: Augusta, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Maine Coast Fishermens Assn

    EIN 134337702 · Headquarters: BRUNSWICK, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Maine Coast Heritage Trust

    EIN 237099105 · Headquarters: Topsham, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Maine Conservation Alliance

    EIN 010541478 · Headquarters: AUGUSTA, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Maine Contractors & Builders Alliance

    EIN 010540741 · Headquarters: Warren, ME, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  81. Maine Guides Education Fund

    EIN 208823493 · Headquarters: PATTEN, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Maine Indoor Air Quality Council

    EIN 010527277 · Headquarters: Augusta, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Maine Interfaith Power & Light Inc

    EIN 010536581 · Headquarters: Orono, ME, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  84. Maine Island Trail Association

    EIN 010478709 · Headquarters: Portland, ME, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  85. Maine Lakes Resource Center

    EIN 272988478 · Headquarters: BELGRADE LAKES, ME, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990

  86. Maine Lakes Society Dba Maine Lakes

    EIN 010322800 · Headquarters: YARMOUTH, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Maine Lobster Community Alliance

    EIN 273801268 · Headquarters: KENNEBUNK, ME, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  88. Maine Master Naturalist Program

    EIN 275523424 · Headquarters: Waldoboro, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Maine Materials Exchange

    EIN 010508337 · Headquarters: Freeport, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Maine Mountain Collaborative

    EIN 813548148 · Headquarters: Portland, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Maine Mycological Association Inc

    EIN 010512631 · Headquarters: Cumberland Foreside, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Maine Resource Recovery Association

    EIN 010457589 · Headquarters: NEWPORT, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Maine Rivers

    EIN 020556861 · Headquarters: Yarmouth, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Maine Rockweed Coalition

    EIN 863965243 · Headquarters: PEMBROKE, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Maine Sfi Implementation Committee Inc

    EIN 992725523 · Headquarters: Augusta, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Maine Sporting Camp Heritage Foundation

    EIN 264461442 · Headquarters: HAMPDEN, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Maine State Florists and Growers Association

    EIN 016013692 · Headquarters: MILLINOCKET, ME, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  98. Maine Tree Farm Program

    EIN 010530256 · Headquarters: Augusta, ME, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Maine Tree Foundation

    EIN 010453264 · Headquarters: AUGUSTA, ME, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Maine Water Awareness

    EIN 822807744 · Headquarters: Brownfield, ME, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

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