Nonprofits in Maine

Nonprofits in Maine. Browse 13,476 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. One Community Many Voices Inc

    EIN 813371269 · Headquarters: Camden, ME, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. One Fish Foundation

    EIN 473367582 · Headquarters: Yarmouth, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. One Less Worry

    EIN 814063579 · Headquarters: Rockland, ME, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  4. One Longfellow Square

    EIN 383833355 · Headquarters: PORTLAND, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. One Nation Under God

    EIN 010376012 · Headquarters: Sangerville, ME, US · Housing & Shelter · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  6. One Spiritual Community Inc

    EIN 721604545 · Headquarters: Bath, ME, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. One Tree Center

    EIN 201703255 · Headquarters: South Portland, ME, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2020 · Primary form: IRS Form 990

  8. One Warrior Won

    EIN 273576001 · Headquarters: Falmouth, ME, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  9. OneMaine

    EIN 451737442 · Headquarters: Portland, ME, USA · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  10. Onion Foundation

    EIN 471289795 · Headquarters: Auburn, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  11. Onpoint Health Data

    EIN 010349706 · Headquarters: Portland, ME, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  12. OOB365

    EIN 264325924 · Headquarters: Old Orchard Beach, ME, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  13. Open Arms Pregnancy Center

    EIN 272523678 · Headquarters: Augusta, ME, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. Open Book Players

    EIN 010541474 · Headquarters: Gardiner, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Open Channel Projects

    EIN 331385361 · Headquarters: Portland, ME, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Open Door Recovery Center

    EIN 222548836 · Headquarters: ELLSWORTH, ME, USA · Mental Health & Crisis Intervention · Latest available filing year: 2017 · Primary form: IRS Form 990

  17. Open Gates Equine Rescue Inc

    EIN 161724140 · Headquarters: New Gloucester, ME, US · Animal Related · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  18. Open Gates Horse Club

    EIN 271670936 · Headquarters: Bradford, ME, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  19. Open House of History

    EIN 333729024 · Headquarters: Waldoboro, ME, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Open Ice Foundation

    EIN 394607508 · Headquarters: Standish, ME, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Open Library of Richmond Inc

    EIN 943400461 · Headquarters: Biddeford, ME, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Open Sky Radio

    EIN 263027835 · Headquarters: FARMINGTON, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Open Table Mdi

    EIN 842965278 · Headquarters: BAR HARBOR, ME, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Opera House Arts

    EIN 010526734 · Headquarters: STONINGTON, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Opera in the Pines Inc

    EIN 994430080 · Headquarters: Scarborough, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Opera Maine

    EIN 010496860 · Headquarters: Portland, ME, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Operation at Ease

    EIN 922016212 · Headquarters: Fairfield, ME, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Operation Breaking Stereotypes

    EIN 030479747 · Headquarters: Orono, ME, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  29. Operation Brotherhood

    EIN 813493094 · Headquarters: Mt Vernon, ME, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Operation Dvoretskyi

    EIN 882099088 · Headquarters: Farmington, ME, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Operation Information Inc

    EIN 010460862 · Headquarters: Acton, ME, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  32. Operation Ray of Light

    EIN 474761177 · Headquarters: Gorham, ME, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Operation Reboot Outdoors Inc

    EIN 833330959 · Headquarters: Turner, ME, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Operation Recognition

    EIN 043369716 · Headquarters: wiscasset, ME, US · Public & Societal Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  35. Operation Resilient Hope

    EIN 462942594 · Headquarters: West Gardiner, ME, US · Religion Related · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  36. Operation Santa Claus

    EIN 010466141 · Headquarters: Buckfield, ME, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Operation Tribute

    EIN 264116863 · Headquarters: Portland, ME, USA · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  38. Opiate Free Island Partnership Inc

    EIN 821562516 · Headquarters: DEER ISLE, ME, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. Opportunity Center of North Franklin County Inc

    EIN 760770074 · Headquarters: Farmington, ME, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Opportunity Enterprises Inc

    EIN 383781390 · Headquarters: AUBURN, ME, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Opportunity for Change

    EIN 010482435 · Headquarters: PORTLAND, ME, US · Crime & Legal Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  42. Opportunity Maine

    EIN 113793495 · Headquarters: Portland, ME, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  43. Opportunity Maine Campaign

    EIN 331176420 · Headquarters: PORTLAND, ME, USA · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  44. Optimist International

    EIN 010461775 · Headquarters: Gray, ME, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  45. Optimist International

    EIN 510212945 · Headquarters: Auburn, ME, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  46. Optimist International

    EIN 874599895 · Headquarters: Gray, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Optimist International

    EIN 900088078 · Headquarters: Minot, ME, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  48. Oquossoc Atv Club

    EIN 461188003 · Headquarters: Oquossoc, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Oral History and Folklife Research Inc

    EIN 371739315 · Headquarters: Scarborough, ME, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Oratcare Institute of Health

    EIN 923419998 · Headquarters: Portland, ME, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Orchard Grove Cemetery Association

    EIN 010132610 · Headquarters: KITTERY, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Order of Eastern Star of Main

    EIN 237336466 · Headquarters: PALERMO, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Order of Eastern Star of Maine

    EIN 010431670 · Headquarters: Wiscasset, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Order of Eastern Star of Maine

    EIN 016014988 · Headquarters: Kennebunk, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Order of Eastern Star of Maine

    EIN 237164898 · Headquarters: Limington, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Order of Eastern Star of Maine

    EIN 237336445 · Headquarters: Fryeburg, ME, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  57. Order of Eastern Star of Maine

    EIN 237336446 · Headquarters: New Sharon, ME, US · Science & Technology · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  58. Order of Eastern Star of Maine

    EIN 237336455 · Headquarters: Saco, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  59. Order of Eastern Star of Maine

    EIN 237336459 · Headquarters: PALMYRA, ME, US · Science & Technology · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  60. Order of Eastern Star of Maine

    EIN 237336462 · Headquarters: Bridgton, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Order of Eastern Star of Maine

    EIN 237336465 · Headquarters: Buckfield, ME, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  62. Order of Eastern Star of Maine

    EIN 237336468 · Headquarters: Topsham, ME, US · Science & Technology · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  63. Order of Eastern Star of Maine

    EIN 237540287 · Headquarters: Westbrook, ME, US · Science & Technology · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  64. Order of Eastern Star of Maine

    EIN 237540293 · Headquarters: Augusta, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Order of Eastern Star of Maine

    EIN 237540294 · Headquarters: Edgecomb, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Order of Eastern Star of Maine

    EIN 237540297 · Headquarters: Springvale, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Order of Eastern Star of Maine

    EIN 237540299 · Headquarters: WARREN, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Order of Eastern Star of Maine

    EIN 237540302 · Headquarters: Westbrook, ME, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  69. Order of Eastern Star of Maine

    EIN 237540306 · Headquarters: Tenants Harbor, ME, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  70. Order of Eastern Star of Maine

    EIN 237540307 · Headquarters: Auburn, ME, US · Science & Technology · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  71. Order of Eastern Star of Maine

    EIN 237540309 · Headquarters: Poland, ME, US · Science & Technology · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  72. Order of Eastern Star of Maine

    EIN 237540317 · Headquarters: PITTSFIELD, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Order of Eastern Star of Maine

    EIN 237540320 · Headquarters: Milo, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Order of Eastern Star of Maine

    EIN 237540322 · Headquarters: Stetson, ME, US · Science & Technology · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  75. Order of Eastern Star of Maine

    EIN 237540323 · Headquarters: Corinna, ME, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  76. Order of Eastern Star of Maine

    EIN 237540324 · Headquarters: Calais, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Order of Eastern Star of Maine

    EIN 237540335 · Headquarters: Gorham, ME, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  78. Order of Eastern Star of Maine

    EIN 237540336 · Headquarters: Bowdoin, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Order of Eastern Star of Maine

    EIN 237540337 · Headquarters: Buxton, ME, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  80. Order of Eastern Star of Maine

    EIN 237540339 · Headquarters: Pittston, ME, US · Science & Technology · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  81. Order of Eastern Star of Maine

    EIN 237540349 · Headquarters: Newcastle, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Order of Eastern Star of Maine

    EIN 237540350 · Headquarters: Lexington, ME, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  83. Order of Eastern Star of Maine

    EIN 237540358 · Headquarters: Machias, ME, US · Science & Technology · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  84. Order of Eastern Star of Maine

    EIN 237540363 · Headquarters: West Paris, ME, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  85. Order of Eastern Star of Maine

    EIN 237540365 · Headquarters: Sabattus, ME, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. Order of Eastern Star of Maine

    EIN 237540367 · Headquarters: Thomaston, ME, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  87. Order of Eastern Star of Maine

    EIN 237540370 · Headquarters: Ellsworth, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Order of Eastern Star of Maine

    EIN 237540393 · Headquarters: Bucksport, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Order of Eastern Star of Maine

    EIN 237540395 · Headquarters: strong, ME, US · Science & Technology · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  90. Order of Eastern Star of Maine

    EIN 237540403 · Headquarters: Deer Isle, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Order of Eastern Star of Maine

    EIN 237540409 · Headquarters: Mexico, ME, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  92. Order of Eastern Star of Maine

    EIN 237540415 · Headquarters: Brewer, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Order of Eastern Star of Maine

    EIN 237540423 · Headquarters: WINDSOR, ME, US · Science & Technology · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  94. Order of Eastern Star of Maine

    EIN 911884925 · Headquarters: Rockland, ME, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  95. Order of the Amaranth Inc Supreme Council

    EIN 216047181 · Headquarters: Chelsea, ME, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  96. Order of the Amaranth Inc Supreme Council

    EIN 237614118 · Headquarters: NEW SHARON, ME, US · Crime & Legal Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  97. Order of the Amaranth Inc Supreme Council

    EIN 237614119 · Headquarters: WOOLWICH, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Order of the Eastern Star of Maine

    EIN 237133394 · Headquarters: Blanchard Twp, ME, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  99. Order of the Eastern Star of Maine

    EIN 237141652 · Headquarters: Newport, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Order of the Eastern Star of Maine

    EIN 237336444 · Headquarters: Bethel, ME, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

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