Mutual & Membership Benefit nonprofits in Massachusetts

Mutual & Membership Benefit nonprofits in Massachusetts. Browse 723 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. Knights of Columbus

    EIN 651226573 · Headquarters: Worcester, MA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  2. Knights of Columbus

    EIN 800437802 · Headquarters: DORCHESTER, MA, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  3. Knights of Columbus

    EIN 800650707 · Headquarters: east longmeadow, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  4. Knights of Columbus

    EIN 870758865 · Headquarters: Methuen, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Knights of Columbus

    EIN 912062003 · Headquarters: Worcester, MA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  6. Knights of Columbus

    EIN 912078344 · Headquarters: Boylston, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Knights of Columbus 116

    EIN 041197254 · Headquarters: QUINCY, MA, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  8. Knights of Columbus 151 Mcmahon Council

    EIN 237542595 · Headquarters: NEW BEDFORD, MA, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  9. Knights of Columbus 180 Dorchester Lower Mills Council

    EIN 041255005 · Headquarters: Dorchester, MA, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  10. Knights of Columbus Building Association of Waltham Inc

    EIN 042636774 · Headquarters: Waltham, MA, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  11. Knights of Columbus Chelsea Council #83

    EIN 237142189 · Headquarters: CHELSEA, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Knights of Columbus Council

    EIN 461516069 · Headquarters: Wilmington, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Knights of Columbus Council 128 Melrose

    EIN 237178875 · Headquarters: Melrose, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Knights of Columbus Inc

    EIN 237142336 · Headquarters: METHUEN, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990

  15. Knights of Columbus Robert Goffin Building Asociation

    EIN 861087438 · Headquarters: Mashpee, MA, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  16. Knights of Columbus Valencia Council 80

    EIN 237142188 · Headquarters: Milford, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Knights of Pythias Domain of Mass

    EIN 237583421 · Headquarters: STOUGHTON, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  18. Knights of Vartan Inc

    EIN 237616091 · Headquarters: Methuen, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  19. Knights Templar of the United States of America

    EIN 042042684 · Headquarters: BOSTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Knights Templar of the United States of America

    EIN 046057813 · Headquarters: Lowell, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Knights Templar of the United States of America

    EIN 046169121 · Headquarters: Natick, MA, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  22. Knights Templar of the United States of America

    EIN 237148340 · Headquarters: cummington, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  23. Knights Templar of the United States of America

    EIN 237157981 · Headquarters: Concord, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Knights Templar of the United States of America

    EIN 237167926 · Headquarters: Gloucester, MA, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  25. Knights Templar of the United States of America

    EIN 237619458 · Headquarters: Feeding Hills, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Knights Templar of the United States of America

    EIN 237619467 · Headquarters: Attleboro, MA, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  27. Knights Templar of the USA

    EIN 042040687 · Headquarters: Boston, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990

  28. Knights Templar of The USA

    EIN 046048031 · Headquarters: Dedham, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Laborers Local 22 Building Corporation

    EIN 043581322 · Headquarters: Malden, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Lambda Alpha International

    EIN 931221658 · Headquarters: BOSTON, MA, US · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  31. Les Enfants Des Esseniens 9

    EIN 331321284 · Headquarters: Lynn, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Les Fils De Saint Jean No 7

    EIN 923897134 · Headquarters: Malden, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Lexington Firefighters Health and Welfare Fund

    EIN 311689045 · Headquarters: Lexington, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Lexington Knights of Columbus Members Association Inc

    EIN 042819067 · Headquarters: LEXINGTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  35. Lexington Knights of Columbus Realty Association Inc

    EIN 042303726 · Headquarters: LEXINGTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  36. Lka I

    EIN 132563871 · Headquarters: SUDBURY, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Lka Inc

    EIN 770223053 · Headquarters: Waban, MA, US · Mutual & Membership Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. Local 2321 Benevolent Fund Inc

    EIN 474698833 · Headquarters: NORTH ANDOVER, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Local 481 Iatse Health and Welfare Trust Fund

    EIN 046919304 · Headquarters: WOBURN, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  40. Local 509 Staff Union

    EIN 862163568 · Headquarters: Marlborough, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Long Hill Cemetery Association Inc

    EIN 046067753 · Headquarters: Salisbury, MA, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  42. Loyal Orange Institution of the USA

    EIN 237203117 · Headquarters: Everett, MA, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  43. Lynn Masonic Temple Association

    EIN 046070475 · Headquarters: LYNN, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  44. Lynnfield Police Association Attn Sergeant Louis Trapasso

    EIN 042774029 · Headquarters: LYNNFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Mansfield Spring Brook Cemetery

    EIN 041578850 · Headquarters: MANSFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  46. Maplewood Cemetery Association

    EIN 042159173 · Headquarters: UPTON, MA, US · Mutual & Membership Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  47. Massachusetts Academy of Audiology Inc

    EIN 205660994 · Headquarters: Boston, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Massachusetts Black Lawyers Association

    EIN 043021895 · Headquarters: Boston, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Massachusetts Board of Bar Overseers Health Care Reimbursement Account Plan

    EIN 900961763 · Headquarters: BOSTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  50. Massachusetts Cemetery Association Inc

    EIN 352336173 · Headquarters: Sharon, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Massachusetts Institute of Technology Welfare Benefit Plans Trust

    EIN 043177556 · Headquarters: Cambridge, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Massachusetts Laborers' Legal Services Fund

    EIN 046357603 · Headquarters: BURLINGTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Massachusetts Leather Insurance Fund

    EIN 046062372 · Headquarters: Peabody, MA, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  54. Massachusetts Life & Health Insurance Guaranty Association

    EIN 222994116 · Headquarters: SPRINGFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. Massachusetts State Grange Patrons of Husbandry Inc

    EIN 237518358 · Headquarters: Upton, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  56. Massachusetts Surgeons' Lodge Frat Order of Police Inc

    EIN 205756324 · Headquarters: NEWTON CENTER, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Massasoit-narragansett Lodge Af&am

    EIN 237170396 · Headquarters: FALL RIVER, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Masspace Inc

    EIN 823298161 · Headquarters: BOSTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  59. Master Members & Wardens of the Grand Lodge of Masons in Massachusetts

    EIN 046057714 · Headquarters: SALEM, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Master Trust Agreement for Welfare Benefits

    EIN 043480219 · Headquarters: SOMERVILLE, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  61. Master Warden & Members of the Grand Lodge of Masons in Mass

    EIN 043318908 · Headquarters: Harwich, MA, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  62. Master Wardens

    EIN 432001249 · Headquarters: MIDDLEBORO, MA, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  63. Master Wardens & Member of the Grand Lodge of Masons in Mass

    EIN 041692795 · Headquarters: Orange, MA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  64. Master Wardens & Members of Beth Horon

    EIN 041032902 · Headquarters: DEDHAM, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990

  65. Master Wardens & Members of Masons Abington Masonic Association

    EIN 041012393 · Headquarters: ABINGTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990

  66. Master Wardens & Members of Masons in Mass

    EIN 041203947 · Headquarters: Dedham, MA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  67. Master Wardens & Members of Masons in Mass

    EIN 223183114 · Headquarters: Swampscott, MA, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  68. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041032788 · Headquarters: Attleboro, MA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  69. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041032992 · Headquarters: East Bridgewater, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  70. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041033014 · Headquarters: Amesbury, MA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  71. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041276745 · Headquarters: North Adams, MA, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  72. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041428370 · Headquarters: Haydenville, MA, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  73. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041731360 · Headquarters: PITTSFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041890565 · Headquarters: Acushnet, MA, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  75. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 041947430 · Headquarters: amesbury, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  76. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 042089245 · Headquarters: SALEM, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  77. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 042218953 · Headquarters: WORCESTER, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990

  78. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 042606952 · Headquarters: Watertown, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  79. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 043041637 · Headquarters: North Graftonr, MA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  80. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 043107994 · Headquarters: New Bedford, MA, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  81. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 043172534 · Headquarters: Russell, MA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  82. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 046038349 · Headquarters: Needham, MA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  83. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 046114791 · Headquarters: East Longmeadow, MA, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  84. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 046699955 · Headquarters: Melrose, MA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  85. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237099741 · Headquarters: Douglas, MA, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  86. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237148321 · Headquarters: Middleboro, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237149843 · Headquarters: Braintree, MA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  88. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237149862 · Headquarters: SOUTH YARMOUTH, MA, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  89. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237149867 · Headquarters: Woburn, MA, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  90. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237152995 · Headquarters: Framingham, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  91. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237152996 · Headquarters: Woburn, MA, US · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  92. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237167763 · Headquarters: Weymouth, MA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237167766 · Headquarters: North Easton, MA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  94. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170360 · Headquarters: Melrose, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  95. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170364 · Headquarters: MELROSE, MA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  96. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170394 · Headquarters: Haverhill, MA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  97. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170424 · Headquarters: Hopkinton, MA, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170426 · Headquarters: Milton, MA, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  99. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170802 · Headquarters: Cambridge, MA, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  100. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237170805 · Headquarters: Chicopee, MA, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

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