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. Mgh Cssa

    EIN 208975559 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  2. Mgs & Rrs Charitable Trust

    EIN 222777614 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  3. MI Management Inc

    EIN 042857794 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. MI Residential Community Inc

    EIN 042647207 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. MI Transportation Inc

    EIN 042921889 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  6. Miacomet Conservation League Inc

    EIN 813591462 · Headquarters: Nantucket, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Michigan Conservative Action Policies

    EIN 881228322 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Microscope Associates Inc

    EIN 042653536 · Headquarters: DEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  9. Mid Cape Church Homes Inc

    EIN 042623918 · Headquarters: HARWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Mid-cape Farmers Market

    EIN 320399527 · Headquarters: Hyannis, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  11. Mid-cape Ice Arena Inc

    EIN 222573786 · Headquarters: SOUTH DENNIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Middle Atlantic Conference of Building Owners & Managers Association

    EIN 230872870 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Middle East & North Africa Clinical Toxicology Association Inc

    EIN 272258348 · Headquarters: STOUGHTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Middleboro Ice Hockey Group

    EIN 043466835 · Headquarters: middleboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  15. Middleboro Sepac

    EIN 842720077 · Headquarters: Middleboro, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  16. Middleborough Youth Building Inc

    EIN 042615501 · Headquarters: Middleboro, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Middlecott Foundation

    EIN 046155699 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  18. Middlesex Boxer Club

    EIN 371606779 · Headquarters: Rehoboth, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  19. Middlesex Canal Association

    EIN 510176731 · Headquarters: NORTH BILLERICA, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Middlesex Canal Historical Preservation Society of Woburn Inc

    EIN 223078009 · Headquarters: woburn, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Middlesex County Bar Association

    EIN 042556236 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  22. Middlesex County Bar Foundation Inc

    EIN 222552862 · Headquarters: Woburn, MA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  23. Middlesex County Deputy Sheriffs Association Inc

    EIN 043026386 · Headquarters: Burlington, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Middlesex County Farm Bureau 617 Great Rd

    EIN 042009035 · Headquarters: MARLBOROUGH, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Middlesex County Foundation Inc

    EIN 042392550 · Headquarters: ASHBY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Middlesex County Kennel Club Inc

    EIN 043100502 · Headquarters: Upton, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Middlesex Defense Attorneys Inc

    EIN 043185330 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Middlesex District Medical Society

    EIN 042740193 · Headquarters: WAKEFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Middlesex West Chamber of Commerce

    EIN 222587640 · Headquarters: WESTFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  30. Middleton Call Firefighters

    EIN 472269454 · Headquarters: Middleton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Midnight S Oasis Inc

    EIN 271887430 · Headquarters: Middleborough, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  32. Midway Trap and Skeet Club of Falmouth Inc

    EIN 043124125 · Headquarters: TEATICKET, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. Mike Lahaie Memorial Golf

    EIN 462933035 · Headquarters: Westport, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  34. Mike Morrison Scholarship Trust

    EIN 046651804 · Headquarters: Hopedale, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Mikerussells House Inc

    EIN 831633107 · Headquarters: NORTH DARTMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  36. Milan Club Boston Inc

    EIN 934293023 · Headquarters: Salem, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Mildred E Cambridge Memorial Fund Judith J Stackpole Trustee

    EIN 043122889 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  38. Mildred H Mcevoy Foundation

    EIN 046069958 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  39. Milford Area Chamber of Commerce Inc

    EIN 042435427 · Headquarters: Milford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Milford Hebrew Association

    EIN 042583221 · Headquarters: Milford, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  41. Milford Permanent Firefighters Association

    EIN 841708680 · Headquarters: MILFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  42. Milford Police Association

    EIN 043202605 · Headquarters: MILFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  43. Military Order of Foreign Wars of the Us Massachusetts Commandery

    EIN 472607729 · Headquarters: South Easton, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  44. Military Order of the Cootie of the United States

    EIN 046129656 · Headquarters: halifax, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  45. Military Order of the Loyal Legion of the United States

    EIN 046041137 · Headquarters: SHIRLEY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Military Order of the Purple Heart of the USA

    EIN 611698310 · Headquarters: Waltham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Military Order of the Purple Heart of the USA

    EIN 911909904 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  48. Military Order of the World Wars Inc

    EIN 046038673 · Headquarters: BRAINTREE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Military Order of the World Wars Inc

    EIN 222510819 · Headquarters: West Boylston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Mill City FC

    EIN 462486476 · Headquarters: Lowell, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  51. Mill Pond Preservation Association Inc

    EIN 222559634 · Headquarters: Orleans, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  52. Mill River Marginalized Artists Collective

    EIN 332374638 · Headquarters: Northampton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Mill River Water Takers Association Inc

    EIN 042652544 · Headquarters: Mill River, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Millbury Baptist Church

    EIN 046000533 · Headquarters: Millbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990

  55. Millbury Girls Softball League

    EIN 042814723 · Headquarters: Millbury, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Millbury Historical Society Inc

    EIN 237423038 · Headquarters: MILLBURY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Millbury Teachers Association

    EIN 042596309 · Headquarters: MILLBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Millbury-sutton Youth Football and Cheer Inc

    EIN 922540140 · Headquarters: MILLBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Miller Foundation

    EIN 237179615 · Headquarters: MARION, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  60. Miller's River Educational Cooperative Incorporated

    EIN 043065810 · Headquarters: ROYALSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Millers Falls Rod & Gun Club Inc

    EIN 042897217 · Headquarters: TURNERS FALLS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Millers River Beagle Club Inc

    EIN 222881166 · Headquarters: ORANGE, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  63. Millerville Mens Club Corporation

    EIN 042044806 · Headquarters: Blackstone, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Million Champions Inc

    EIN 921055174 · Headquarters: Lincoln, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Millis Model Aircraft Club Inc

    EIN 043276941 · Headquarters: Medway, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Millis Youth BaseballSoftball Inc

    EIN 454481631 · Headquarters: Millis, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  67. Millwrights Local Union 1121

    EIN 042315531 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Milton Backstage Boosters

    EIN 423508096 · Headquarters: Milton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Milton Business Chamber of Commerce C/o Kimberly a Harte

    EIN 043387616 · Headquarters: MILTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Milton Fire Relief Association

    EIN 046053910 · Headquarters: MILTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. Milton Historical Society

    EIN 046038657 · Headquarters: MILTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. Milton L Williams Trust Uw

    EIN 046016107 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  73. Milton Police Association

    EIN 510160286 · Headquarters: Milton, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Milton Police Relief Association

    EIN 510176209 · Headquarters: Milton, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Milton Yacht Club

    EIN 046064412 · Headquarters: Milton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Milton Youth Hockey Inc

    EIN 237319849 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Milton-Hoosic Club

    EIN 041624360 · Headquarters: Canton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Minds Rebind

    EIN 464051172 · Headquarters: SHREWSBURY, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  79. Mindy Kate and Scott Memorial Scholarship

    EIN 464600758 · Headquarters: Gardner, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Minerva Brooks Memorial Library Inc

    EIN 046156340 · Headquarters: Waban, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  81. Minist Iglesia Nueva Jerusalem Corp

    EIN 831134088 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Ministerio Creciendo En La Santidad

    EIN 883683715 · Headquarters: Dedham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Ministerio Cubriendo La Necesidad Del Projimo Inc

    EIN 821573341 · Headquarters: LOWELL, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  84. Ministerio Mujer Levantate

    EIN 800365852 · Headquarters: Lawrence, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  85. Ministerio Profetico Voz D Alerta

    EIN 471229537 · Headquarters: Holyoke, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  86. Ministries of Care Inc

    EIN 464013717 · Headquarters: MATTAPAN, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  87. Mink Meadows Landowners Organization Inc

    EIN 042457203 · Headquarters: Vineyard Haven, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Minnan Association Ma of USA Inc

    EIN 832522849 · Headquarters: Malden, MA, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  89. Minow Family Foundation

    EIN 366169301 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  90. Minute Man Arc for Human Services Inc

    EIN 042269230 · Headquarters: CONCORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Minute Man Dart League Inc

    EIN 042605799 · Headquarters: Danvers, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  92. Minute Man National Park Assoc Inc

    EIN 223090536 · Headquarters: CONCORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Minute Man Sportsmans Club Inc

    EIN 042255051 · Headquarters: Burlington, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Minute Men Moose Legion 28

    EIN 042599862 · Headquarters: North Weymouth, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Minuteman Chapter Model a Ford Club of America

    EIN 273815082 · Headquarters: Sudbury, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Minuteman Samoyed Club

    EIN 050492094 · Headquarters: NORTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Miss Boston Scholarship Organization Inc

    EIN 800505143 · Headquarters: South Weymouth, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  98. Miss Massachusetts Scholarship Foundation Inc

    EIN 222586251 · Headquarters: Attleboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  99. Mission First People Always Policy

    EIN 871803716 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. Mission Hill Community School Council Inc

    EIN 043103865 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

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