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. Independent Order of Odd Fellows Sincerity Lodge 173

    EIN 042557375 · Headquarters: Sherborn, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Independent Order of Vikings

    EIN 042585995 · Headquarters: Saugus, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  3. Independent School Chairpersons Association Inc

    EIN 237278401 · Headquarters: PITTSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Independent University Alumni Association at Lowell Inc

    EIN 042052723 · Headquarters: Lowell, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  5. Independent Video Artists for Community Media

    EIN 364647019 · Headquarters: Webster, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  6. Indian Americans for Burlington Inc

    EIN 473842092 · Headquarters: BURLINGTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Indian Association of Greater Springfield

    EIN 042900885 · Headquarters: LONGMEADOW, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Indian Brook Elementary PTA

    EIN 943479247 · Headquarters: Plymouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Indian Lake Watershed Association Inc

    EIN 042921750 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Indian Orchard Lions Club

    EIN 471446826 · Headquarters: Indian Orchard, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  11. Indian Trails Housing Development Fund Corporation

    EIN 474558611 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  12. Indie Game Collective

    EIN 471127396 · Headquarters: Melrose, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  13. Indivisible Massachusetts

    EIN 831442403 · Headquarters: Florence, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Indivisible Middleboro

    EIN 414098057 · Headquarters: Middleboro, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Indonesian Three Magnolias Inc

    EIN 474910859 · Headquarters: LITTLETON, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  16. Indus Valley Freedom Fund Inc

    EIN 394100650 · Headquarters: Stoneham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Infact DBA Corporate Accountability

    EIN 411322686 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Infinity Initiative Inc

    EIN 995090185 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Information Systems Security Association

    EIN 043012580 · Headquarters: Marblehead, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Informed Patients Project Inc

    EIN 412815620 · Headquarters: BEVERLY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Infusion Nurses Society Inc

    EIN 061360779 · Headquarters: norwood, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  22. Inly School Inc

    EIN 042526455 · Headquarters: SCITUATE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Inner City and Africa Ministries

    EIN 222265914 · Headquarters: MEDWAY, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Innitou Ski Runners Inc

    EIN 237246803 · Headquarters: WILMINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Insight Meditation Society

    EIN 042749860 · Headquarters: Barre, MA, United States · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Insight Meditation Society

    EIN 222959507 · Headquarters: Barre, MA, United States · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. Inspire and Impact Foundation

    EIN 920538214 · Headquarters: Belmont, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Inspire Arts and Music Inc

    EIN 043081057 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Institute for Cardiovascular Disease and Muscle Research Inc

    EIN 043187133 · Headquarters: Fitchburg, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  30. Institute for Excellence in Government Inc

    EIN 463277610 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Institute for Healthcare Improvement

    EIN 383017223 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Institute for Human Centered Design Inc

    EIN 042785256 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Institute for Science and Interdisciplinary Studies Inc

    EIN 043176123 · Headquarters: Amherst, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Institute for Scientific Research in Music

    EIN 043107517 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  35. Institute for Scientific Research Inc

    EIN 222487207 · Headquarters: Winchester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Institute of Industrial Engineers Inc

    EIN 237456935 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Institute of Management Accountants Inc

    EIN 237291883 · Headquarters: BILLERICA, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Institute of Management Accountants Inc

    EIN 237353640 · Headquarters: LYNNFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  39. Institute of Noise Control Engineering of the United States of America

    EIN 237211908 · Headquarters: WAKEFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  40. Institute of Traditional Science Inc

    EIN 042577162 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  41. Institution for Savings in Newburyport & Its Vicinity Charitable Foundation Inc

    EIN 043353621 · Headquarters: NEWBURYPORT, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  42. Insulation Contractors Association of New England

    EIN 042899784 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Insulators & Asbestos Workers Local 6 Building Corporation

    EIN 043154565 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Insurance Fraud Bureau of Massachusetts

    EIN 043107028 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Insurance Library Association of Boston

    EIN 042104331 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Int Brotherhood of Boilermakers Local 29

    EIN 041472071 · Headquarters: AVON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Int Longshoremens 800 Ila C/o Adam Florek

    EIN 041280633 · Headquarters: COHASSET, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. Int'l Alliance of Theatrical Stage Empl & Moving Picture

    EIN 046168847 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Int'l Assoc of Firefighters 1839 Chelmsford

    EIN 237080022 · Headquarters: North Chelmsford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Int'l Association of Bridge Structural Ornamental Iron Workers Local 521

    EIN 231974545 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  51. Int'l Association of Firefighters Local 1706

    EIN 510227032 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  52. Int'l Brotherhood of Painters & Allied Trades Local Union 1280

    EIN 237071749 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Int'l Society for Pharmaceutical Engineering Inc Boston Area Chapter

    EIN 043159964 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Int'l Union of Bricklayers and Allied Cr Ma-me-nh-ri Appr & Train Fund

    EIN 222518280 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Integritus Healthcare Inc Formerly Berkshire Healthcare Systems

    EIN 043030633 · Headquarters: Pittsfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Integrity Martial Arts Competition Team Inc

    EIN 464005963 · Headquarters: Hyannis, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  57. Intellect News Society Inc

    EIN 260856147 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  58. Intenational Front Runners Inc

    EIN 852795629 · Headquarters: Newburyport, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Intentions Agile Ministry

    EIN 365021017 · Headquarters: Whitinsville, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  60. Interaction Institute

    EIN 942928341 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Interchurch Council Elderly Housing Inc

    EIN 042800801 · Headquarters: NEW BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Interdisciplinary Biblical Research Institute

    EIN 232137524 · Headquarters: Gloucester, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. Interfaith Council of Franklin County Inc

    EIN 043071439 · Headquarters: Deerfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. Interfaith Homes of Longmeadow Inc

    EIN 042604555 · Headquarters: LONGMEADOW, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Interfaith Homes of Longmeadow Phase Two Inc

    EIN 222474763 · Headquarters: LONGMEADOW, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Interhelp Inc

    EIN 222570333 · Headquarters: Watertown, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Internal Revenue Services Cpas Association

    EIN 042652480 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  68. International Alliance of Theatrical Stage Employees Local 11 Building Corp

    EIN 991699982 · Headquarters: SOUTH BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. International Alliance of Theatrical Stage Employees Local 53

    EIN 046168844 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. International Alliance Theatrical Stage Employees & Moving Picture M

    EIN 043153584 · Headquarters: SALEM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. International Alliance Theatrical Stage Employees & Moving Picture M

    EIN 455383637 · Headquarters: South Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. International Alliance Theatrical Stage Employees & Moving Picture M Local Union

    EIN 046114712 · Headquarters: NORTHAMPTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. International Alliance Theatrical Stage Employees & Moving Pictures

    EIN 043074105 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. International Assembly of God

    EIN 043502466 · Headquarters: RANDOLPH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. International Assn of Fire Fighters

    EIN 042481241 · Headquarters: WESTWOOD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. International Assn of Firefighters-Local 1631

    EIN 046143952 · Headquarters: Norwood, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. International Assoc of Bridge Struc Ironworkers Local Union 470

    EIN 160834515 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  78. International Assoc of Fire Fighter

    EIN 042656692 · Headquarters: PITTSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  79. International Assoc of Fire Fighters 1857 North Reading

    EIN 237080024 · Headquarters: NORTH READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. International Assoc of Fire Fighters L1370 Wilmington

    EIN 042864508 · Headquarters: WILMINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. International Assoc of Firefighter L 172

    EIN 237366220 · Headquarters: SALEM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. International Assoc of Firefighter Local 1564 - Winchester

    EIN 046143970 · Headquarters: WINCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. International Assoc of Firefighters

    EIN 046400706 · Headquarters: HUDSON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  84. International Assoc of Firefighters

    EIN 237265688 · Headquarters: WEST SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. International Assoc of Firefighters Local #1714

    EIN 237404194 · Headquarters: MARLBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. International Assoc of Firefighters Local 1658 - Andover Ma

    EIN 237389854 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. International Assoc of Firefighters Local 1931

    EIN 237082513 · Headquarters: SEEKONK, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. International Assoc of Firefighters Local 1992

    EIN 510226947 · Headquarters: North Attleboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  89. International Assoc of Firefighters Local 2167

    EIN 237265685 · Headquarters: DUXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. International Assoc of Firefighters Local 3128

    EIN 042609944 · Headquarters: FITCHBURG, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. International Assoc of Firefighters Lu 792 Quincy

    EIN 046067258 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  92. International Assoc of Lions 12119

    EIN 046137778 · Headquarters: Walpole, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  93. International Assoc of Lions Clubs

    EIN 863056372 · Headquarters: BOURNE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. International Association Firefighters Local 2035

    EIN 046343681 · Headquarters: NORTH ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. International Association for Artificial Intelligence & Law Inc

    EIN 223204628 · Headquarters: Harvard, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. International Association Of

    EIN 411407956 · Headquarters: Groveland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. International Association of Bridge Struct & Ornament Iron Workers 745

    EIN 020371177 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  98. International Association of Electrical Inspectors

    EIN 043165142 · Headquarters: RUSSELL, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. International Association of Fire 146

    EIN 046116609 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. International Association of Fire Fighters

    EIN 042610451 · Headquarters: Greenfield, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

First page and all pages