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. Boston Cares Inc

    EIN 043173682 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Boston Catholic Cemetery Association

    EIN 041103040 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Boston Celtics Shamrock Foundation Inc

    EIN 043174933 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Boston Chapter Cpcu Trust

    EIN 046392433 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  5. Boston Chapter Iacrn

    EIN 462341395 · Headquarters: Framingham, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  6. Boston Chapter of Construction Specinst

    EIN 046170837 · Headquarters: NEWTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Boston Chapter of Links

    EIN 046115325 · Headquarters: JAMAICA PLAIN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Boston Chapter of Silverliners International Flight Attendant Org

    EIN 994261587 · Headquarters: Beverly, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Boston Chapter of the Association of Legal Administrators

    EIN 043031826 · Headquarters: BOXBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Boston Chapter of the Mass Associat for Education of Young Children In

    EIN 046352326 · Headquarters: BOURNE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Boston Chapter of the Womens Council of Realtors

    EIN 300474518 · Headquarters: worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Boston Chapter Smps Inc

    EIN 042799054 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Boston College Class of 1953

    EIN 273871302 · Headquarters: Westwood, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  14. Boston College Law School Publication Trust

    EIN 046054705 · Headquarters: NEWTON CENTRE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. Boston Cyberarts Inc

    EIN 043337932 · Headquarters: Brookline, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Boston Dance Alliance Inc

    EIN 043064755 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Boston Estonian Society Inc

    EIN 046114550 · Headquarters: Malden, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Boston Exchange Inc

    EIN 473486850 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  19. Boston Fatherless & Widows Society

    EIN 046006506 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  20. Boston Fire Metro Fire Cism Team Inc

    EIN 810853168 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  21. Boston Firefighters Credit Union

    EIN 042077206 · Headquarters: Dorchester, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Boston Food Forest Coalition

    EIN 465327936 · Headquarters: JAMAICA PLAIN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Boston Friends of Yad Ezrah Inc

    EIN 042931589 · Headquarters: STOUGHT, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Boston Guthi Foundation Inc

    EIN 333947661 · Headquarters: Arlington, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Boston Harbor Yacht Club Inc

    EIN 042310374 · Headquarters: South Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. Boston Help Group Inc

    EIN 042909659 · Headquarters: Arlington, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  27. Boston Housing Police Patrolmans Association

    EIN 900720829 · Headquarters: Jamaica Plain, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  28. Boston Jewelers Club Inc

    EIN 050478248 · Headquarters: Chelmsford, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Boston Junior Eagles Inc

    EIN 043193668 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Boston Latvian Sunday School Inc

    EIN 042442412 · Headquarters: BROOKLINE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Boston Letter Carriers Mutual Benefit Association

    EIN 042205326 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  32. Boston Library Consortium Inc

    EIN 042605198 · Headquarters: FRANKLIN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Boston Madison Square Garden Club

    EIN 041105640 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Boston Malacological Club Inc

    EIN 863282070 · Headquarters: Stow, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Boston Marine Society

    EIN 042139204 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Boston Mba Career Consortium Inc

    EIN 474102009 · Headquarters: Winchester, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  37. Boston Municipal Police Patrolman's Association

    EIN 222739986 · Headquarters: WEST ROXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  38. Boston Musica Viva Inc

    EIN 237135191 · Headquarters: BRIGHTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  39. Boston National Railway Historical Society Inc

    EIN 016021199 · Headquarters: Lawrence, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Boston Navigators Club

    EIN 046058242 · Headquarters: Marshfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Boston Newspaper Prtg Pressmen Union 3 Paperhandlers H & W Fd

    EIN 223032503 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Boston Nexus for Global Studies

    EIN 392398625 · Headquarters: Brookline, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Boston North Business Association Inc

    EIN 274871482 · Headquarters: Lowell, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  44. Boston Numismatic Society

    EIN 046069732 · Headquarters: Quincy, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  45. Boston Park League Inc

    EIN 042755886 · Headquarters: MANSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Boston Partners in Education Inc

    EIN 042501341 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Boston Patent Law Association C/o Davies & Monahan Pc

    EIN 042667161 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Boston Phrf

    EIN 010968900 · Headquarters: Winthrop, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Boston Plasterers & Cement Masons Local 534 - Deferred Income Fund

    EIN 046544055 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Boston Plasterers' & Cement Masons Union Local 534

    EIN 041103065 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Boston Police Detectives Benevolent Society

    EIN 223010035 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Boston Police Gaelic Column of Pipes and Drums Inc

    EIN 043178965 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  53. Boston Police Patrolmen's Association

    EIN 046141788 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Boston Police Relief Association

    EIN 041106807 · Headquarters: HYDE PARK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Boston Profit Business Consulting Inc

    EIN 272966378 · Headquarters: Shrewsbury, MA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  56. Boston Recorder Society Inc

    EIN 042678308 · Headquarters: Cambridge, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Boston Records Classical Corporatio

    EIN 043133146 · Headquarters: DUXBURY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Boston Restore Inc

    EIN 043323018 · Headquarters: Dorchester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Boston Sand & Gravel Company Charitable Foundation

    EIN 043174009 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  60. Boston Seaman's Friend Society Inc

    EIN 042103913 · Headquarters: CHELSEA, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Boston Senior Home Care Inc

    EIN 042546251 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Boston Shipping Association Inc

    EIN 042034907 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  63. Boston Shoe Travelers Association Inc

    EIN 020340326 · Headquarters: WAKEFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Boston Sim Inc

    EIN 042738814 · Headquarters: WESTFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Boston Skyline Chapter of Sweet Adelines Intl Inc

    EIN 046113160 · Headquarters: Auburn, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Boston Soccer 2026 Corp

    EIN 824476022 · Headquarters: FOXBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Boston Society of Architects

    EIN 042448949 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Boston Software Process Improvement Netwrok Incorporated

    EIN 043184719 · Headquarters: Sudbury, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Boston Songs Club

    EIN 900403295 · Headquarters: Acton, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  70. Boston Soonahs Inc

    EIN 474675202 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  71. Boston Sparks Association Inc

    EIN 042850266 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Boston Spurs Supporters Club Inc

    EIN 393120180 · Headquarters: Somerville, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Boston Strong Disaster Relief

    EIN 474842463 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Boston Structural Biology Society

    EIN 422090930 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Boston Suburban Alumnae Chapter of Delta Delta Delta

    EIN 550902333 · Headquarters: Hopkinton, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  76. Boston Surgical Society Inc

    EIN 046069294 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  77. Boston Teacher Union Hlth & Welfare Fnd

    EIN 042511984 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Boston Teachers Union

    EIN 042307827 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Boston Teachers Union Paraprofessional Health & Welfare Fund

    EIN 042864297 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Boston Teachers Union Prepaid Legal Serv Ices Fund

    EIN 042751045 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Boston Theater Critics Association Inc

    EIN 043112318 · Headquarters: Wayland, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  82. Boston Theological Interreligious Consortium Inc

    EIN 042430287 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Boston Tooling and Machine Association Inc

    EIN 042901246 · Headquarters: DRACUT, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Boston University Hillel Inc

    EIN 320293118 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Boston University Medical Group

    EIN 900513372 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Boston University Society of Orthodontists

    EIN 042761809 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  87. Boston Uyghur Association Inc

    EIN 854031236 · Headquarters: LEXINGTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Boston Va Research Institute Inc

    EIN 043081524 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Boston White Eagles Soccer Association Inc

    EIN 262184328 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  90. Boston Womens Health Book Collective Inc

    EIN 237274169 · Headquarters: Chestnut Hill, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Boston Yacht Club

    EIN 041108550 · Headquarters: MARBLEHEAD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Boston-Area Jewish Education Program

    EIN 042531886 · Headquarters: Waltham, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Bostonview Corporation C/o Boston Society of the New Jerusalem

    EIN 042585195 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Boulder Brook Neighborhood Association

    EIN 453767850 · Headquarters: Wellesley, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  95. Bounce Back Empowerment Services Inc

    EIN 334067274 · Headquarters: lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Bourne Athletic Association Inc

    EIN 043074511 · Headquarters: MONUMENT BEACH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. Bourne High School Alumni Inc

    EIN 222619950 · Headquarters: Buzzards Bay, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Bourne Historical Society Inc

    EIN 042578062 · Headquarters: BOURNE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Bourne Society for Historic Preservation Inc

    EIN 042686029 · Headquarters: Pocasset, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Bourne Youth Council Inc

    EIN 043237844 · Headquarters: Buzzards Bay, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

First page and all pages