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

    EIN 041032824 · Headquarters: SAUGUS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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

    EIN 041340005 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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

    EIN 237170402 · Headquarters: COTUIT, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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

    EIN 046147020 · Headquarters: North Brookfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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

    EIN 611730910 · Headquarters: Marion, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Master Wardens & Members of the Grand Lodge William North Lodge Af & Am

    EIN 046059909 · Headquarters: LOWELL, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Master Wardens & Members Of The Oriental Marthas Vineyard Lodge

    EIN 237170435 · Headquarters: Oak Bluffs, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Master Wardens & Members of the Star of Bethlehem Lodge

    EIN 046052367 · Headquarters: DANVERS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Master Wardens & Members of Thegrand Lodge of Masons in Mass

    EIN 042651481 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Master Wardens & Members of Thegrand Lodge of Masons in Mass

    EIN 046363205 · Headquarters: WESTPORT, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Master Wardens & Members of Washington Lodge

    EIN 041032807 · Headquarters: Littleton, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  12. Master Wardens & Members Pequossette Lodge AF & AM

    EIN 041032811 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Master Wardens & Members the Morning Star Lodge

    EIN 042201783 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Master Wardens and Members of Grand Lodge of Masons in Joseph Webb Lodge Af and Am

    EIN 046056866 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Master Wardens and Members of Grand Lodge of Masons in Massachusetts

    EIN 043240964 · Headquarters: EAST WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  16. Master Wardens and Members of Major General Henry Knox Af&am

    EIN 042271801 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Master Wardens and Members of Masons Orient Lodge

    EIN 041032924 · Headquarters: Norwood, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Master Wardens and Members of the Consolidated Lodge Af&am

    EIN 041032838 · Headquarters: NEWTON CENTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  19. Master Wardens and Members of the G Lodge of Masons in Massachusetts

    EIN 041383607 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Master Wardens and Members of the Grand Lodge of Masons in Mass

    EIN 237142992 · Headquarters: Cohasset, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Master Wardens and Members of the Grand Lodge of Masons in Mass

    EIN 474056650 · Headquarters: Wilmington, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Master Wardens and Members of the Grand Lodge of Masons in Mass

    EIN 810720901 · Headquarters: Attleboro, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  23. Master Wardens and Members of the Grand Lodge of Masons in Mass

    EIN 854224170 · Headquarters: Somerville, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Master Wardens and Members of the Grand Lodge of Masons in Massa

    EIN 931449316 · Headquarters: SOUTH WELLFLEET, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  25. Master Wardens and Members of the Grand Lodge of Masons in Massachuetts

    EIN 046058401 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Master Wardens and Members of the Grand Lodge of Masons in Massachusetts

    EIN 041032832 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Master Wardens and Members of the Grand Lodge of Masons in Massachusetts

    EIN 832402971 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Master Wardens and Members of the Grand of Masons in Massachusetts

    EIN 041922515 · Headquarters: MARLBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Master Wardens and Members of the Lodge of St Andrew

    EIN 237578899 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Master Wardens and Members of the Natick Masonic Trust Building

    EIN 046034208 · Headquarters: NATICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Master Wardens And Members Of The Vineyard Masonic Temple Inc

    EIN 042774261 · Headquarters: Oak Bluffs, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Master Wardens Members of the Grand Lodge of Masons in Mass

    EIN 900633675 · Headquarters: Holden, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Masters and Wardens & Member of Masons Waltham Triad Lodge a F a M

    EIN 041032900 · Headquarters: LEOMINSTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Masters and Wardens of the Brockton Masonic Temple Assoc

    EIN 042303176 · Headquarters: Brockton, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. Masters Wardens & Members in Massachuse Columbian Lodge Af & Am

    EIN 041032872 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Masters Wardens & Members of Masons in Mass Wyoming Lodge

    EIN 041032825 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Masters Wardens & Members of Mt Lebanon Lodge

    EIN 041032906 · Headquarters: MELROSE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Masters Wardens & Members of the Grand Lodge of Masons in Ma

    EIN 451620482 · Headquarters: Arlington, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Masters Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 046037808 · Headquarters: SHELBURNE FALLS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Masterwardens & Members of the Grand Lodge of Masons in Mass

    EIN 453910963 · Headquarters: Newtonville, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Masterworks Chorale

    EIN 046125155 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Mastery Transcript Consortium

    EIN 814974458 · Headquarters: WINCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Matt Z Foundation

    EIN 331443547 · Headquarters: Three Rivers, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Mattapan Community Health Center Inc

    EIN 042544151 · Headquarters: MATTAPAN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Mattapoisett Area Artists Inc

    EIN 821943054 · Headquarters: Mattapoisett, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  46. Mattapoisett Historical Society

    EIN 046130266 · Headquarters: MATTAPOISETT, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Mattapoisett Rescue Team Inc

    EIN 042628705 · Headquarters: Mattapoisett, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Matthew 25 Inc

    EIN 222967513 · Headquarters: Worcester, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Matthew J Mccarthy Memorial Fund

    EIN 611577974 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  50. Mattina R Proctor Foundation

    EIN 111067014 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  51. Mattoon Street Historic Preservatio Association

    EIN 043070529 · Headquarters: Springfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Maudslay State Park Association

    EIN 222734449 · Headquarters: Newburyport, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Maugus Club

    EIN 041576940 · Headquarters: WELLESLEY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Maura Wilkens Foundation

    EIN 883567586 · Headquarters: Dorchester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Maurice & Carol Feinberg Family Foundation

    EIN 133746078 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  56. Mautucket Plat Roads Action

    EIN 934958321 · Headquarters: Medway, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. Mavericks Flying Club

    EIN 333531089 · Headquarters: Lancaster, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Max & Anne Goldberg Foundation

    EIN 456011859 · Headquarters: Wellesley, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  59. Maxillofacial Surgeons Foundation

    EIN 363617873 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Maxwell V Blum Family Foundation

    EIN 222659555 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  61. Maya Educational Foundation

    EIN 030335159 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Mayflower Council Inc Boy Scouts of America

    EIN 043308728 · Headquarters: MILFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Mayflower League

    EIN 043408896 · Headquarters: Wareham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Maynard Permanent Fire Fighters

    EIN 237082519 · Headquarters: MAYNARD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. Maynard Stow Baseball Softball Inc

    EIN 042794816 · Headquarters: MAYNARD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  66. Mbta Pensioners Club Inc

    EIN 043018940 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. MBTA Police Superior Officers Association Inc

    EIN 883357749 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Mcafc-l6 Inc

    EIN 844059367 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. Mccarthy Elementary School Pto

    EIN 043137123 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  70. Mccutchin-collins Charitable Trust Mass 031292

    EIN 223100739 · Headquarters: DOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  71. McGlame Wordell Scholarship & Charitable Trust

    EIN 222779687 · Headquarters: Danvers, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. Mcknight Neighborhood Council

    EIN 042660191 · Headquarters: SPRINGFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Mcop Local 167 Southborough

    EIN 471000471 · Headquarters: Southborough, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  74. Mcvcac Inc

    EIN 042749660 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Mcw Starz Elite

    EIN 471852961 · Headquarters: SOUTH HAMILTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Meadow Brook Golf Club Corporation

    EIN 041608216 · Headquarters: READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Meadow Lake Skiers Inc

    EIN 223055480 · Headquarters: LEICESTER, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Meadow View Homeowners Realty Trust

    EIN 387180846 · Headquarters: Foxboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Meadowedge Art for Children

    EIN 222827291 · Headquarters: Bernardston, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  80. Mechanics Hall Corporation

    EIN 043410521 · Headquarters: LOWELL, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  81. Medfield Coalition for Public Education Inc

    EIN 042978701 · Headquarters: MEDFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Medfield Community Cable Access Corporation

    EIN 042978708 · Headquarters: Medfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Medfield Community Market

    EIN 934432070 · Headquarters: Medfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Medfield Employers and Merchants Organization Inc

    EIN 223132241 · Headquarters: MEDFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  85. Medfield Green

    EIN 264759690 · Headquarters: Medfield, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  86. Medfield High School Parent Teacher Organization Inc

    EIN 222559020 · Headquarters: MEDFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Medfield Historical Society

    EIN 042447517 · Headquarters: Medfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Medfield Home Committee

    EIN 046079217 · Headquarters: Medfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Medfield Police Association

    EIN 042987121 · Headquarters: Medfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. Medford Boat Club

    EIN 046112940 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  91. Medford Chamber of Commerce Inc

    EIN 041609080 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Medford Community Housing Inc

    EIN 222895732 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Medford Historical Society

    EIN 237070143 · Headquarters: Medford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Medford Little League

    EIN 462067047 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  95. Medford Paraprofessionals Associati

    EIN 743051010 · Headquarters: Medford, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  96. Medford Police Superior Officers Assoc

    EIN 800564400 · Headquarters: MEDFORD, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Medford Post 45 American Legion Building Association

    EIN 042459651 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Medford Professional Firefighters Association Inc

    EIN 042499781 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Medford Senior Center Inc

    EIN 042581601 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  100. Medford Womens Club Federation of Womens Club

    EIN 042007990 · Headquarters: MEDFORD, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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