Unknown & Unclassified nonprofits in Maine

Unknown & Unclassified nonprofits in Maine. Browse 4,077 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. Sebago Lakes Region Chamber of Commerce

    EIN 010361797 · Headquarters: WINDHAM, ME, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  2. Sebago Lakes Region Fuller Center for Housing

    EIN 843119233 · Headquarters: WINDHAM, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. Sebago Lakes Rotary Club

    EIN 222932453 · Headquarters: Windham, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Sebasticook Valley Elks Lodge No 2713

    EIN 010442435 · Headquarters: Pittsfield, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Seboeis Stream Atv Club

    EIN 432080578 · Headquarters: Howland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Sedgwick Education Association

    EIN 272399853 · Headquarters: Sedgwick, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Sedgwick-brooklin Historical Society

    EIN 016020564 · Headquarters: Sedgwick, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Seedlings to Sunflowers

    EIN 364876753 · Headquarters: GORHAM, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Seniors and Friends of Veazie

    EIN 994181693 · Headquarters: Veazie, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sennett Homestead

    EIN 473223753 · Headquarters: Northfield, ME, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  11. Seton Village

    EIN 010367553 · Headquarters: PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Sexual Assault Prevention and Response Services

    EIN 222592990 · Headquarters: AUBURN, ME, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  13. Sexual Assault Support Services of Midcoast Maine

    EIN 222850515 · Headquarters: BRUNSWICK, ME, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  14. Shaker Valley Snowtravelers Inc

    EIN 237383031 · Headquarters: Waterboro, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Share the Road with Carol Inc

    EIN 864006312 · Headquarters: Windsor, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sheepscot Lake Fish and Game Association

    EIN 800291470 · Headquarters: Palermo, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Sheepscot Valley Education Association

    EIN 270461398 · Headquarters: Whitefield, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Sheepscot Valley Musical Art Society

    EIN 010370898 · Headquarters: Wiscasset, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sheet Metal Workers Local 17 Training Fund

    EIN 010352616 · Headquarters: LEWISTON, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Shining Star of Franklin County

    EIN 862126279 · Headquarters: Farmington, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Shoestring Theatre Inc

    EIN 010359952 · Headquarters: PORTLAND, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Shriners International

    EIN 010170013 · Headquarters: BANGOR, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Shriners International

    EIN 010386065 · Headquarters: Lubec, ME, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  24. Shriners International

    EIN 510151368 · Headquarters: BANGOR, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Sidney Trail Riders Inc

    EIN 010364232 · Headquarters: Sidney, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 016023507 · Headquarters: PORTLAND, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 363794141 · Headquarters: Bangor, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Sigma Phi

    EIN 263175522 · Headquarters: Biddeford, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Sigma Theta Tau International Inc

    EIN 311242963 · Headquarters: South Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  30. Sigma Theta Tau International Inc

    EIN 911935315 · Headquarters: Orono, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Silver Lake Housing Corp

    EIN 237356023 · Headquarters: BANGOR, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Silver Spur Riding Club

    EIN 010426088 · Headquarters: Sidney, ME, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  33. Simeon Institute

    EIN 330510109 · Headquarters: THORNDIKE, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Simmons Foundation - PerkinsThompson

    EIN 010277832 · Headquarters: Portland, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Simplicity Way Road Association

    EIN 472182097 · Headquarters: Poland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Simpsom Cemetary Association

    EIN 010364299 · Headquarters: Bar Harbor, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Simpson Cemetery Association

    EIN 800892748 · Headquarters: Brunswick, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Skating Association of Maine

    EIN 010368190 · Headquarters: HALLOWELL, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Skidompha Library Association

    EIN 010228297 · Headquarters: DAMARISCOTTA, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Skillin Elementary PTA

    EIN 010493079 · Headquarters: SOUTH PORTLAND, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Skowhegan Community Food Cupboard

    EIN 222715488 · Headquarters: SKOWHEGAN, ME, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  42. Skowhegan Lions Club

    EIN 223032319 · Headquarters: Skowhegan, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Skowhegan Sno-hawks Snowmobile

    EIN 010359140 · Headquarters: Skowhegan, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Skowhegan Veterans Memorial Park

    EIN 800424675 · Headquarters: SKOWHEGAN, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Skowhegan Womans Aid Society

    EIN 016010584 · Headquarters: Skowhegan, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Skowhegan-madison Maine Elks Lodge No 2531

    EIN 010346712 · Headquarters: SKOWHEGAN, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Slatesville Cemetery Association

    EIN 050250614 · Headquarters: Norway, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Small Axe Inc

    EIN 134155759 · Headquarters: LEWISTON, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. Sno Wanderers

    EIN 365050034 · Headquarters: Kingfield, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Sno-rovers Inc

    EIN 237181698 · Headquarters: Hodgdon, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Snow Dusters

    EIN 237312451 · Headquarters: troy, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. So Portland Educational Support Professional Ass

    EIN 320297787 · Headquarters: South Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Society for Interdisciplinary French Seventeenth-century Studies

    EIN 272778888 · Headquarters: Brunswick, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Society for Marketing Professional Services

    EIN 010470737 · Headquarters: PORTLAND, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Society for Military History

    EIN 530239268 · Headquarters: SOUTH PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Society for Neuroscience

    EIN 454273450 · Headquarters: Orono, ME, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  57. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 010404282 · Headquarters: Albion, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 016019162 · Headquarters: YARMOUTH, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 016023554 · Headquarters: Durham, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 010325659 · Headquarters: BREWER, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Society of Colonial Wars in the State of Maine

    EIN 262329216 · Headquarters: Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  62. Society of Maine Crafters

    EIN 010359244 · Headquarters: Portland, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Society of Manufacturing Engineers

    EIN 016023660 · Headquarters: Woolwich, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Society of Women Engineers

    EIN 010450107 · Headquarters: Vassalboro, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Society of Women Engineers

    EIN 300597045 · Headquarters: Orono, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Solar Owners of York Association

    EIN 824956302 · Headquarters: York, ME, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  67. Solon Fire Department Auxiliary

    EIN 465149023 · Headquarters: Solon, ME, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  68. Some Theatre Company

    EIN 474316565 · Headquarters: BANGOR, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Somerset Masonic Bldg Association

    EIN 010199702 · Headquarters: Madison, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Somes-meynell Wildlife Sanctuary

    EIN 010408925 · Headquarters: MOUNT DESERT, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  71. Somesville Landing Corporation

    EIN 016017888 · Headquarters: MOUNT DESERT, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. Sons and Daughters of Nathan Lord

    EIN 273173878 · Headquarters: Bingham, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Sons and Daughters of the Colony of New Sweden Maine

    EIN 237176376 · Headquarters: New Sweden, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Sons of Amvets Squadron 715 Co Durham Amvets Post 13 Soa

    EIN 871703991 · Headquarters: DURHAM, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Sons of Norway Maine Chapter

    EIN 770673708 · Headquarters: RICHMOND, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  76. Sons of Union Veterans of the Civil War

    EIN 010483202 · Headquarters: Dover Foxcroft, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Sons of Union Veterans of the Civil War

    EIN 010511517 · Headquarters: Kennebunk, ME, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  78. Sons of Union Veterans of the Civil War

    EIN 237020586 · Headquarters: Bangor, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Sons of Union Veterans of the Civil War

    EIN 262056923 · Headquarters: Camden, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Sons of Union Veterans of the Civil War

    EIN 844203031 · Headquarters: Dover Foxcroft, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Sons of Union Veterans of the Civil War

    EIN 881475310 · Headquarters: WASHINGTON, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Sons of Union Veterans of the Civil War

    EIN 922870147 · Headquarters: Lee, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Sorrento Memorial Fund

    EIN 056016679 · Headquarters: Sorrento, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Sorrento Village Improvement Association

    EIN 010162690 · Headquarters: Sorrento, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Sorrento-Sullivan Rec Center

    EIN 016019457 · Headquarters: Sullivan, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Sos Saco Bay Inc

    EIN 844284740 · Headquarters: Saco, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. South Berwick Reporter

    EIN 413392485 · Headquarters: South Berwick, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. South Berwick Strawberry Festival Committee Incorporated

    EIN 222474075 · Headquarters: South Berwick, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. South Berwick Volunteer Network

    EIN 421602878 · Headquarters: South Berwick, ME, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  90. South Blue Hill Cemetery Association Inc

    EIN 010283334 · Headquarters: Blue Hill, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. South Bristol Teachers Association

    EIN 922252973 · Headquarters: SOUTH BRISTOL, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. South Buxton Cemetary Association

    EIN 237126324 · Headquarters: Bar Mills, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. South China Public Library

    EIN 010380392 · Headquarters: South China, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. South Park Development Corporation

    EIN 010424895 · Headquarters: LEWISTON, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. South Portland Firemens Relief Association

    EIN 016012493 · Headquarters: South portland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. South Portland Holiday Toy Drive

    EIN 921705326 · Headquarters: South Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. South Portland Ice Hockey Boosters Inc

    EIN 010412049 · Headquarters: Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. South Portland Land Trust

    EIN 010427972 · Headquarters: S PORTLAND, ME, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. South Portland Police Patrolmen's Association

    EIN 010459415 · Headquarters: SOUTH PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. South Portland Service Employee Association

    EIN 271066704 · Headquarters: Casco, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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