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. International Brotherhood of Electrical Workers Local Union No 223

    EIN 041472089 · Headquarters: Tauton, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. International Brotherhood of Electrical Workers Local Union No 2321

    EIN 042473915 · Headquarters: NORTH ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. International Brotherhood of Electrical Workers System Council T-5

    EIN 364648598 · Headquarters: NORTH ANDOVER, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. International Brotherhood of Painters Local 577

    EIN 237071798 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. International Brotherhood of Police Officers 417

    EIN 043047788 · Headquarters: SOUTH DENNIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  6. International Brotherhood of Police Officers Local 538 Inc

    EIN 043169128 · Headquarters: WINCHENDON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. International Brotherhood of Teamsters

    EIN 043095710 · Headquarters: WORCESTER, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. International Brotherhood of Teamsters 404 Local Union

    EIN 041171377 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  9. International Brotherhood of Teamsters Local 653 Tcwh

    EIN 041472105 · Headquarters: SOUTH EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. International Brotherhood of Teamsters Union Local 127

    EIN 042241104 · Headquarters: MILFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. International Brotherhood of Teamsters Union Local No 59

    EIN 041472102 · Headquarters: New Bedford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. International Candlepin Bowling Association

    EIN 043094038 · Headquarters: Erving, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. International Catholic Deaf Assn

    EIN 042973465 · Headquarters: Springfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. International Church of God

    EIN 043209132 · Headquarters: BURLINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-T

  15. International Coastal and Ocean Organization Inc

    EIN 043058730 · Headquarters: Orleans, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. International Council Advancing Independent School Accreditation

    EIN 824673704 · Headquarters: DEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. International Cultic Studies Association Inc

    EIN 042667828 · Headquarters: TEWKSBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. International Desalination and Reuse Association

    EIN 222099951 · Headquarters: DANVERS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. International District Energy Assoc

    EIN 521918849 · Headquarters: Westborough, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. International Dzogchen Community at Tsegyalgar East

    EIN 222485466 · Headquarters: CONWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. International Education Programs Inc.

    EIN 042639943 · Headquarters: Marlborough, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. International Federation of 149 Ifp Local

    EIN 042270316 · Headquarters: LYNN, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  23. International Federation of Local 142

    EIN 042134300 · Headquarters: WAKEFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. International Forum for Democracy

    EIN 473457992 · Headquarters: REVERE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. International Furnishings & Design Assoc

    EIN 046170615 · Headquarters: Sudbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. International Isotope Society Inc

    EIN 222845329 · Headquarters: HOLLISTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. International Laborers Union of North America - Local 175 Afl-cio

    EIN 041691878 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. International Language Institute of Massachusetts Inc

    EIN 222553803 · Headquarters: NORTHAMPTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. International Live Events Association Inc

    EIN 043182445 · Headquarters: BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. International Longshoremens Association

    EIN 046144065 · Headquarters: Everett, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. International Longshoremens Local 1066 C/o Marykay Tkachuk

    EIN 041896535 · Headquarters: STONEHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. International Longshoremens Union Local 799

    EIN 041685575 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. International Medical Research Collaborative

    EIN 474515165 · Headquarters: West Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  34. International Meteorite Collectors Association Incorporated

    EIN 202074456 · Headquarters: Haydenville, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. International Molded Fiber Association

    EIN 391887858 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. International Order of the Rainbow Girls

    EIN 237132846 · Headquarters: Revere, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. International Order of the Rainbow Girls

    EIN 237133401 · Headquarters: Cherry Valley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. International Order of the Rainbow Girls

    EIN 237133650 · Headquarters: Swansea, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. International Order of the Rainbow Girls

    EIN 237133655 · Headquarters: Concord, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. International Order of the Rainbow Girls

    EIN 237134394 · Headquarters: Raynham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. International Order of the Rainbow Girls

    EIN 237140179 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. International Order of the Rainbow Girls

    EIN 237162043 · Headquarters: Natick, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. International Order of the Rainbow Girls

    EIN 237506432 · Headquarters: Revere, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. International Order of the Rainbow Girls

    EIN 237507243 · Headquarters: Southborough, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. International Order of the Rainbow Girls

    EIN 237507269 · Headquarters: Plymouth, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. International Order of the Rainbow Girls

    EIN 237507271 · Headquarters: Revere, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. International Order of the Rainbow Girls

    EIN 237507284 · Headquarters: Easthampton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. International Order of the Rainbow Girls Supreme Assembly

    EIN 901033784 · Headquarters: Rutland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. International Reading Association Inc

    EIN 320286201 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  50. International Saw and Knife Association

    EIN 911113860 · Headquarters: Kingston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. International Seniors Amateur Golf Society Inc

    EIN 592803351 · Headquarters: MARSTONS MILLS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. International Society for Solid State Ionics

    EIN 812785724 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. International Society for the Psychoanalytic Study of Organizations

    EIN 481142858 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  54. International Society of Plastic and Aesthetic Nurses

    EIN 510164353 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. International Space University Org Inc

    EIN 521511773 · Headquarters: WEBSTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  56. International Union LOCAL 2322 UAW

    EIN 043174430 · Headquarters: Holyoke, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. International Union of Electrical Radio & Machine Workers Cio Bldg A

    EIN 042577599 · Headquarters: Lynn, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  58. International Union of Elevator Constructors Local Union No 4

    EIN 041338415 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. International Union of Operating Engineers Local 4

    EIN 041445210 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. International Union of Operating Engineers Local 4 Labor Mgt Coop Trust

    EIN 046254465 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. International Union of Operating Engineers Local 877

    EIN 042382284 · Headquarters: NORWOOD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. International Union of Operating Engineers Local 98

    EIN 041673765 · Headquarters: SOUTHWICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. International Union of Operating Engineers Local 98 Health & Welfare Fund

    EIN 042123707 · Headquarters: SOUTHWICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. International Union of Painter and Allied Trades Local Union 1138

    EIN 046119606 · Headquarters: WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. International Union of Painters & Allied Trades Local 257

    EIN 041472099 · Headquarters: ROSLINDALE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. International Union of Painters & Allied Trades Local 402

    EIN 046130588 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. International Union of Painters & Allied Trades Local 939

    EIN 046145958 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. International Union of Painters and Allied Trades Local 1911

    EIN 061269649 · Headquarters: STOUGHTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. International Union of Painters and Allied Trades Local Union 48

    EIN 041337186 · Headquarters: ROSLINDALE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. International Union Uaw Local 1596

    EIN 042446487 · Headquarters: CANTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. International Union Uaw Local 422

    EIN 042066066 · Headquarters: MANSFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. International Union United Auto Aerospace & Agricultural Workers

    EIN 852466370 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. International Women's Forum of Massachusetts Inc

    EIN 043151053 · Headquarters: Boxborough, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. Interrelated Arts Foundation

    EIN 042976593 · Headquarters: MARBLEHEAD, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Intl Assoc of Electrical Inspectors

    EIN 237282410 · Headquarters: PEABODY, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  76. Intl Federation of American Homing Pigeon Fanciers

    EIN 912141659 · Headquarters: NORTH WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  77. Intl Longshoreman Local 805 805 Ila

    EIN 041280631 · Headquarters: STONEHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Intl Union of Electronic Electrical Salaried Mach&furn Workers Aflcio

    EIN 043251771 · Headquarters: Marblehead, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Into Action Recovery Inc

    EIN 473287687 · Headquarters: TEWKSBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Inventors Association of New England

    EIN 042628529 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  81. Invest in Belmont

    EIN 934254190 · Headquarters: Belmont, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Investment Management Education Alliance

    EIN 431578348 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  83. Ion Inc

    EIN 223032677 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Iota Gamma Upsilon House Corp

    EIN 043188853 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Iowas Future Fund Inc

    EIN 393849537 · Headquarters: Beverly, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Ipswich Bay Yacht Club

    EIN 046125498 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Ipswich Dance Foundation Inc

    EIN 042684949 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  88. Ipswich Education Foundation Inc

    EIN 043290520 · Headquarters: Ipswich, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. Ipswich Heritage Visitors Center Corporation

    EIN 454080865 · Headquarters: IPSWICH, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  90. Ipswich Little League Inc

    EIN 043228176 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Ipswich Outboard Club Inc

    EIN 042818564 · Headquarters: Ipswich, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Ipswich Post 1093 Vfw Inc

    EIN 042139629 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  93. Ipswich River Community Chorus Inc

    EIN 222593418 · Headquarters: NORTH READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Ira C Kaplan & Anita M Migday Foundation Inc

    EIN 043257030 · Headquarters: BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  95. Irish Educational Foundation Inc

    EIN 043115638 · Headquarters: Medfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Irish Social Club of Boston

    EIN 046357765 · Headquarters: West Roxbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  97. Irish-american Club Inc of Woburn

    EIN 042623585 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Irmandade Do Divino Espirito Santo Do Pico Inc

    EIN 043329753 · Headquarters: NEW BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Iron Work Farm in Acton Inc

    EIN 042385912 · Headquarters: ACTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Iron Workers Afl-cio District Council of New England

    EIN 042170668 · Headquarters: SOUTH BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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