Unknown & Unclassified nonprofits in Massachusetts

Unknown & Unclassified nonprofits in Massachusetts. Browse 12,299 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. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518425 · Headquarters: Taunton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518428 · Headquarters: Williamsburg, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518441 · Headquarters: Lenox, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518446 · Headquarters: Rochester, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  5. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518460 · Headquarters: Rochester, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518468 · Headquarters: Lee, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518475 · Headquarters: Salem, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518512 · Headquarters: North Adams, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518523 · Headquarters: Feeding Hills, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518543 · Headquarters: Sunderland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 364928133 · Headquarters: Lunenburg, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  12. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 911995708 · Headquarters: Rochester, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  13. Massachusetts State Grange Patrons of Husbandry Inc 31 Dunstable

    EIN 237518320 · Headquarters: Dunstable, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Massachusetts State Labor Council Afl-cio

    EIN 042254301 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Massachusetts State Police Boxing

    EIN 042799872 · Headquarters: SOUTHBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Massachusetts Student Nurses Association

    EIN 800694216 · Headquarters: Canton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Massachusetts Student Public Interest Research Group Inc

    EIN 043091421 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Massachusetts Systems Contractors Association Inc

    EIN 042658566 · Headquarters: Sharon, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Massachusetts Taxpayers Foundation Inc

    EIN 041590310 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Massachusetts Teacher Association

    EIN 237146487 · Headquarters: Great Barrington, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Massachusetts TEACHER ASSOCIATION The Education Association of Natick

    EIN 042644509 · Headquarters: Natick, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  22. Massachusetts Teachers Association

    EIN 041591200 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Massachusetts Teachers Association

    EIN 042576407 · Headquarters: Hamilton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Massachusetts Teachers Association

    EIN 042577646 · Headquarters: North Reading, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Massachusetts Teachers Association

    EIN 042582793 · Headquarters: Harwich, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  26. Massachusetts Teachers Association

    EIN 042594357 · Headquarters: Rowley, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  27. Massachusetts Teachers Association

    EIN 042601102 · Headquarters: Mansfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Massachusetts Teachers Association

    EIN 042605256 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Massachusetts Teachers Association

    EIN 042607086 · Headquarters: RAYNHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Massachusetts Teachers Association

    EIN 042625816 · Headquarters: North Chelmsford, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Massachusetts Teachers Association

    EIN 042626627 · Headquarters: Salem, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Massachusetts Teachers Association

    EIN 042645893 · Headquarters: Ayer, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Massachusetts Teachers Association

    EIN 042645894 · Headquarters: Wakefield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Massachusetts Teachers Association

    EIN 042652290 · Headquarters: North Adams, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Massachusetts Teachers Association

    EIN 042656089 · Headquarters: West Barnstable, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Massachusetts Teachers Association

    EIN 042667759 · Headquarters: Turners Falls, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Massachusetts Teachers Association

    EIN 042667770 · Headquarters: Huntington, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Massachusetts Teachers Association

    EIN 042667783 · Headquarters: Greenfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Massachusetts Teachers Association

    EIN 042667794 · Headquarters: Bedford, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Massachusetts Teachers Association

    EIN 042667795 · Headquarters: Gardner, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. Massachusetts Teachers Association

    EIN 042667806 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Massachusetts Teachers Association

    EIN 042667810 · Headquarters: Buzzardsbay, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Massachusetts Teachers Association

    EIN 042667848 · Headquarters: PALMER, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Massachusetts Teachers Association

    EIN 042667882 · Headquarters: Swansea, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  45. Massachusetts Teachers Association

    EIN 042671402 · Headquarters: Westfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Massachusetts Teachers Association

    EIN 042688749 · Headquarters: Bridgewater, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Massachusetts Teachers Association

    EIN 042736479 · Headquarters: Billerica, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Massachusetts Teachers Association

    EIN 042749786 · Headquarters: Franklin, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Massachusetts Teachers Association

    EIN 042863569 · Headquarters: Leominster, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Massachusetts Teachers Association

    EIN 043038289 · Headquarters: Swansea, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  51. Massachusetts Teachers Association

    EIN 043137588 · Headquarters: Auburn, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Massachusetts Teachers Association

    EIN 043154226 · Headquarters: Leverett, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Massachusetts Teachers Association

    EIN 043159080 · Headquarters: Kingston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Massachusetts Teachers Association

    EIN 043161629 · Headquarters: Mattapoisett, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Massachusetts Teachers Association

    EIN 043225594 · Headquarters: SWANSEA, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  56. Massachusetts Teachers Association

    EIN 043244025 · Headquarters: Wilbraham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Massachusetts Teachers Association

    EIN 043294385 · Headquarters: Shelburne Falls, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Massachusetts Teachers Association

    EIN 043349257 · Headquarters: Provincetown, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Massachusetts Teachers Association

    EIN 043352275 · Headquarters: Reading, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Massachusetts Teachers Association

    EIN 043365033 · Headquarters: Southbridge, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Massachusetts Teachers Association

    EIN 043546637 · Headquarters: Marion, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Massachusetts Teachers Association

    EIN 046193333 · Headquarters: Mattapoisett, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  63. Massachusetts Teachers Association

    EIN 046358253 · Headquarters: Chartley, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. Massachusetts Teachers Association

    EIN 222660576 · Headquarters: Dover, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Massachusetts Teachers Association

    EIN 232546988 · Headquarters: Hingham, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. Massachusetts Teachers Association

    EIN 237079000 · Headquarters: Westifeld, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Massachusetts Teachers Association

    EIN 237124905 · Headquarters: Upton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Massachusetts Teachers Association

    EIN 237128460 · Headquarters: Hanover, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Massachusetts Teachers Association

    EIN 237128463 · Headquarters: Georgetown, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Massachusetts Teachers Association

    EIN 237128468 · Headquarters: Foxborough, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Massachusetts Teachers Association

    EIN 237128478 · Headquarters: ASHBURNHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Massachusetts Teachers Association

    EIN 237128480 · Headquarters: South Deerfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Massachusetts Teachers Association

    EIN 237128494 · Headquarters: Southampton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Massachusetts Teachers Association

    EIN 237128495 · Headquarters: West BRidgewater, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Massachusetts Teachers Association

    EIN 237128537 · Headquarters: West Springfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Massachusetts Teachers Association

    EIN 237130856 · Headquarters: Lunenburg, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Massachusetts Teachers Association

    EIN 237132259 · Headquarters: Sutton, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  78. Massachusetts Teachers Association

    EIN 237132561 · Headquarters: Ludlow, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Massachusetts Teachers Association

    EIN 237132571 · Headquarters: Concord, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Massachusetts Teachers Association

    EIN 237132795 · Headquarters: Needham, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  81. Massachusetts Teachers Association

    EIN 237133407 · Headquarters: NORFOLK, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Massachusetts Teachers Association

    EIN 237133716 · Headquarters: Winthrop, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Massachusetts Teachers Association

    EIN 237133895 · Headquarters: Berkley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Massachusetts Teachers Association

    EIN 237134030 · Headquarters: Milford, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  85. Massachusetts Teachers Association

    EIN 237136202 · Headquarters: Topsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  86. Massachusetts Teachers Association

    EIN 237136218 · Headquarters: EAST BROOKFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Massachusetts Teachers Association

    EIN 237140710 · Headquarters: West Newbury, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Massachusetts Teachers Association

    EIN 237143070 · Headquarters: Marblehead, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Massachusetts Teachers Association

    EIN 237143077 · Headquarters: Cohasset, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Massachusetts Teachers Association

    EIN 237143087 · Headquarters: Topsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Massachusetts Teachers Association

    EIN 237146466 · Headquarters: Dedham, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  92. Massachusetts Teachers Association

    EIN 237151835 · Headquarters: Reading, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Massachusetts Teachers Association

    EIN 237152743 · Headquarters: Hull, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Massachusetts Teachers Association

    EIN 237153422 · Headquarters: NANTUCKET, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Massachusetts Teachers Association

    EIN 237153424 · Headquarters: Webster, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Massachusetts Teachers Association

    EIN 237154915 · Headquarters: Wayland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Massachusetts Teachers Association

    EIN 237155956 · Headquarters: BARRE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Massachusetts Teachers Association

    EIN 237229943 · Headquarters: Beverly, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Massachusetts Teachers Association

    EIN 237229944 · Headquarters: Stoneham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Massachusetts Teachers Association

    EIN 237229950 · Headquarters: Fitchburg, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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