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. Mediation Services of N Cntl Ma Inc

    EIN 222881830 · Headquarters: LEOMINSTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Medical Benefits Plan for Retired Non- Physician Salaried Employees

    EIN 943134675 · Headquarters: NORTH QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Medical Benefits Plan for Retired Physicians and Salaried Employees

    EIN 942968245 · Headquarters: NORTH QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Medical Civil Rights Initiative Inc

    EIN 332504855 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Medical Outcomes Trust Inc C/o Ba Inc

    EIN 043160283 · Headquarters: ROCKLAND, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Medical Research Charities Inc

    EIN 943148591 · Headquarters: Salem, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Medical Staff Boston Medical Center Brighton

    EIN 043321112 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. Medieval Academy of America

    EIN 042326290 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Medway Federation of Teachers 3645A

    EIN 042601693 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Medway Friends of Elders Inc

    EIN 043097976 · Headquarters: Medway, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Medway Friends of the Performing Arts Inc

    EIN 462748903 · Headquarters: Medway, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Medway Holiday Fund Corporation

    EIN 331563456 · Headquarters: Medway, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Medway Police Association

    EIN 046414893 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  14. Medway Youth Lax

    EIN 873505604 · Headquarters: Medway, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Meeting House Chamber Music Festival Inc

    EIN 042730730 · Headquarters: Brewster, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  16. Meeting House Montessori Inc

    EIN 043204076 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Meeting Street Massachusetts Inc

    EIN 042296947 · Headquarters: Dartmouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Meetinghouse Road Association Inc

    EIN 042908712 · Headquarters: Tisbury, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Meetinghouse Road Recreation Association Inc

    EIN 043160287 · Headquarters: Tisbury, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Megansett Yacht Club Inc

    EIN 042379327 · Headquarters: NORTH FALMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Melanin Goddess Society Incorporated

    EIN 854130297 · Headquarters: MALDEN, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Melodious Accord Inc

    EIN 133266612 · Headquarters: Hawley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Melody Woods - Curtis Whiting Everson Hobart Reservation

    EIN 046724518 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Melrose Chamber of Commerce Inc

    EIN 042656028 · Headquarters: Melrose, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Melrose Day Care Center Inc

    EIN 042480167 · Headquarters: Melrose, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Melrose Educators Union Inc

    EIN 237255473 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Melrose Firefighters Iaff Local 1617 C/o John Mccarron

    EIN 046143948 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Melrose Fish & Game Inc

    EIN 041611098 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Melrose Hickory Hawks Ski Club Inc

    EIN 237146955 · Headquarters: melrose, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Melrose Market Community Inc

    EIN 921273127 · Headquarters: Melrose, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Melrose Massachusetts Television Inc

    EIN 043138428 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  32. Melrose Orchestral Association Inc

    EIN 046112869 · Headquarters: Melrose, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. Melrose Police Relief Corp C/o John Goodhue

    EIN 046061211 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Melvin S Cutler Charitable Foundation C/o Greenbergrosenblatt Kull & Bitsoli

    EIN 042733957 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Melvoin Foundation

    EIN 366047994 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  36. Members Plus Credit Union

    EIN 042039851 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  37. Memorial Field Associaiton Inc

    EIN 901134155 · Headquarters: WHITMAN, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  38. Memorial Library Association Inc of Dennis

    EIN 042179443 · Headquarters: DENNIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Memorial Spaulding School Extended Day

    EIN 222498817 · Headquarters: NEWTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Mena Peace Inc

    EIN 460743957 · Headquarters: cambridge, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  41. Menauhant Yacht Club

    EIN 042074552 · Headquarters: EAST FALMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Menemsha Water Company Cooperative

    EIN 043145312 · Headquarters: CHILMARK, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Mens Et Manus Foundation

    EIN 300742599 · Headquarters: Cambridge, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  44. Mental Health Center Housing Inc

    EIN 042795195 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Mental Health Leadership Campaign Inc C/o Verdolino & Lowey Pc

    EIN 474955567 · Headquarters: FOXBOROUGH, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  46. Mercedes Benz Club of America

    EIN 273303545 · Headquarters: Needham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Merck Family Fund

    EIN 226063382 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  48. Mercond Inc

    EIN 043099628 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. Mercury Wire Products Charitable Foundation

    EIN 042785455 · Headquarters: SPENCER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. Meredith E Drench Charitable Trust UA DTD 03282013

    EIN 476372167 · Headquarters: Newburyport, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  51. Merit Construction Alliance of Massachusetts Inc

    EIN 043371152 · Headquarters: AYER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. Merriam Hill Association Inc

    EIN 042722202 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Merrimac Charitable Trust Ii

    EIN 043249244 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  54. Merrimac Town Improvement Society

    EIN 046168684 · Headquarters: Merrimac, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Merrimack Education Center Inc

    EIN 042620821 · Headquarters: CHELMSFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990

  56. Merrimack Valley Beagle Club

    EIN 464768760 · Headquarters: NEWBURY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Merrimack Valley Chamber of Commerce Inc

    EIN 041527920 · Headquarters: LAWRENCE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Merrimack Valley Christian Day School Inc

    EIN 042791479 · Headquarters: LOWELL, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Merrimack Valley Economic Development Corporation

    EIN 043210262 · Headquarters: HAVERHILL, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Merrimack Valley Employee Association

    EIN 811627468 · Headquarters: Lowell, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  61. Merrimack Valley Estate Planning Council Inc

    EIN 043059234 · Headquarters: CHELMSFORD, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. Merrimack Valley Health Services Inc

    EIN 222604915 · Headquarters: Andover, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  63. Merrimack Valley Library Consortium Inc

    EIN 042900971 · Headquarters: LAWRENCE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Merrimack Valley Military Vehicle Collectors Inc

    EIN 222775584 · Headquarters: Reading, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Merrimack Valley Philharmonic Society Inc

    EIN 237113774 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Merrimack Valley Roadrunners Inc

    EIN 473145023 · Headquarters: GROVELAND, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  67. Merrimack Valley Striders Inc

    EIN 043194844 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Merrimack Valley Support Systems Inc

    EIN 042721269 · Headquarters: Lawrence, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. Merrimack Valley Vietnam Vets Inc

    EIN 222474865 · Headquarters: Chelmsford, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Merrimack Valley Young Mens Christian Association of Nh Inc

    EIN 043430910 · Headquarters: Lawrence, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Messier Family Foundation at Cory Island Inc

    EIN 043240567 · Headquarters: WESTPORT, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Messinger Family Foundation Inc

    EIN 133979672 · Headquarters: STOCKBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  73. Metanoia Fund

    EIN 046668886 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  74. Metco College Scholarship Fund of Lexington

    EIN 237124093 · Headquarters: Lexington, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  75. Methuen Administrators Association

    EIN 273943386 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Methuen Community Television Corp

    EIN 223467444 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Methuen Education Association Inc

    EIN 394434953 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Methuen Fire Fighters Local 1691

    EIN 237388209 · Headquarters: Methuen, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Methuen Police Firefighters Retirees Association Inc

    EIN 043304658 · Headquarters: METHUEN, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Methuen Police Patrolmens Association

    EIN 237324626 · Headquarters: Methuen, MA, USA · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990

  81. Methuen Police Superior Officers Association

    EIN 222512719 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Methuen Rod & Gun Club Inc

    EIN 042500010 · Headquarters: Methuen, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Methuen Youth Hockey Association Inc

    EIN 042621689 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Methuen Youth Soccer Assoc Inc

    EIN 042867665 · Headquarters: METHUEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  85. Metro Boston Alive Inc

    EIN 223064084 · Headquarters: ROXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Metro Credit Union

    EIN 041695745 · Headquarters: CHELSEA, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Metro West Intergroup of Overeaters Anonymous

    EIN 042910488 · Headquarters: Needham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Metropolitan Boston Area Including Middlesexnorfolk&suffolk Counties

    EIN 046139128 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. Metropolitan Waterworks Museum Inc

    EIN 043251784 · Headquarters: CHESTNUT HILL, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Metropolitan Wind Symphony Inc

    EIN 231765776 · Headquarters: Medford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Metropolitan Yacht Club

    EIN 042081270 · Headquarters: EAST BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Metrowest Brits

    EIN 364753849 · Headquarters: FRANKLIN, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  93. Metrowest Center for Independent Living Inc

    EIN 042955399 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. MetroWest Chamber of Commerce

    EIN 041339795 · Headquarters: Framingham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Metrowest Emergency Physicians Inc C/o Swain Healthcare

    EIN 042739589 · Headquarters: MANSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. Metrowest Legal Services Inc

    EIN 043177488 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Metrowest Mediation Services Inc Dba Framingham Court Mediation Services

    EIN 042710084 · Headquarters: NATICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Metrowest Symphony Orchestra Inc

    EIN 042725631 · Headquarters: Natick, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Metrowest Tang Soo Do Karate Ltd

    EIN 262162723 · Headquarters: HUDSON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. Meyers Primary Care Institute Inc

    EIN 043211678 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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