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. Sons of Italy in America

    EIN 043266352 · Headquarters: BOXFORD, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. Sons of Italy in America

    EIN 043296715 · Headquarters: WAKEFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Sons of Italy in America

    EIN 046292685 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sons of Italy in America

    EIN 046361680 · Headquarters: STOUGHTON, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  5. Sons of Italy in America

    EIN 046411709 · Headquarters: HOPEDALE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Sons of Italy in America

    EIN 222519337 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Sons of Italy in America

    EIN 260059009 · Headquarters: Natick, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  8. Sons of Italy in America

    EIN 412047700 · Headquarters: BROCKTON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Sons of Italy in America

    EIN 461548717 · Headquarters: Lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sons of Italy in America

    EIN 832677085 · Headquarters: Wayland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sons of Italy in America 1712 Alessandro Volta

    EIN 042704630 · Headquarters: STOUGHTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  12. Sons of Italy in America 278 Giuseppe Verdi

    EIN 042081227 · Headquarters: WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Sons of Italy in America 506 Cambridge Ital Mens Ladies

    EIN 270018337 · Headquarters: BELMONT, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Sons of Italy in America 648 Dante Aligheri

    EIN 042884648 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Sons of Italy in America Grand Lodge of MA - General Fund

    EIN 041850950 · Headquarters: Waltham, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Sons of Italy of America

    EIN 041931637 · Headquarters: FALL RIVER, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Sons of Norway

    EIN 237291548 · Headquarters: Danvers, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Sons of Norway

    EIN 237525698 · Headquarters: West Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Sons of Union Veterans

    EIN 262638574 · Headquarters: LYNN, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sons of Union Veterans of the Civil War

    EIN 237020178 · Headquarters: Marlborough, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sons of Union Veterans of the Civil War

    EIN 820863648 · Headquarters: Lowell, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sons of Union Veterans of the Civil War

    EIN 853113482 · Headquarters: SHIRLEY, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sons of Union Veterans of the Civil War

    EIN 900600571 · Headquarters: Rockland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sons of Union Veterans of the Civil War

    EIN 911851843 · Headquarters: Braintree, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Soulful Eyes Equine Rescue Inc

    EIN 853125038 · Headquarters: NEW BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Sounds of Recovery Inc

    EIN 813006340 · Headquarters: Leverett, MA, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  27. South Attleboro Knights of Columbus Council 5876

    EIN 042481374 · Headquarters: Attleboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. South Beit Olam Cemetery Corporation

    EIN 273645762 · Headquarters: Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  29. South Boston Columbus Park Youth Sports Collaborative Inc

    EIN 223137802 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. South Boston Irish American Society Inc

    EIN 042685026 · Headquarters: SOUTH BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. South Boston Lithuanian Citizens Association

    EIN 041851810 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. South Boston Yacht Club

    EIN 041851890 · Headquarters: SOUTH BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. South Central Hearth Patio and Barbeque

    EIN 752841746 · Headquarters: Sudbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. South Church Preservation Inc

    EIN 042773479 · Headquarters: Nantucket, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. South Coast Hockey League Llc

    EIN 850851513 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  36. South Coast Opera Club

    EIN 200985078 · Headquarters: Fall River, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  37. South Cove Community Health Center Inc

    EIN 042501818 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. South Dartmouth Cemetery Association

    EIN 042129039 · Headquarters: SOUTH DARTMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. South Deerfield Cemetery Association

    EIN 041851995 · Headquarters: SOUTH DEERFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  40. South Deerfield Womens Club

    EIN 043060883 · Headquarters: South Deerfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. South Dennis Free Public Library Association

    EIN 237121172 · Headquarters: SOUTH DENNIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. South Eastern Economic Development Corporation

    EIN 042772952 · Headquarters: TAUNTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. South Elementary School PTA

    EIN 800416044 · Headquarters: Plymouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. South End Business Alliance

    EIN 043294164 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. South Fitchburg Hunting and Fishing Club

    EIN 932217258 · Headquarters: TOWNSEND, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. South Gardner Historical Society Inc

    EIN 042640987 · Headquarters: Gardner, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  47. South Hadley Education Association Inc

    EIN 900336721 · Headquarters: SOUTH HADLEY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. South Hadley Knights of Columbus No 1721 Building Association

    EIN 273682678 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. South Hadley Swimming Club Inc

    EIN 042349199 · Headquarters: South Hadley, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. South Meadow Village Association Inc

    EIN 042892342 · Headquarters: Carver, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. South Middlesex Hospital Association Inc

    EIN 042554649 · Headquarters: CAMBRIDGE MA, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  52. South Middlesex Opportunity Properties Inc

    EIN 043093032 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  53. South Mountain Association

    EIN 046049419 · Headquarters: PITTSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  54. South Norfolk County Residences Inc

    EIN 042584668 · Headquarters: WESTWOOD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. South Shore Chamber of Commerce Inc

    EIN 041752580 · Headquarters: ROCKLAND, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. South Shore Christian Academy

    EIN 043226161 · Headquarters: Weymouth, MA, United States · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  57. South Shore Coalition of Independent Therapists

    EIN 042875906 · Headquarters: SANDWICH, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. South Shore Dog Training Club Inc

    EIN 046067573 · Headquarters: HANOVER, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  59. South Shore Eagles Inc

    EIN 237456860 · Headquarters: ABINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  60. South Shore Economic Development Corp

    EIN 237362584 · Headquarters: ROCKLAND, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. South Shore Educational Collaborative Federation

    EIN 510580929 · Headquarters: HINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. South Shore Flying Club Inc

    EIN 042654994 · Headquarters: WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  63. South Shore Group Home I Inc

    EIN 223059161 · Headquarters: KINGSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. South Shore Group Home Ii Inc

    EIN 223075656 · Headquarters: KINGSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. South Shore Group Home Iii Inc

    EIN 223059148 · Headquarters: KINGSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. South Shore Harbormasters Association

    EIN 900909850 · Headquarters: Norwell, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  67. South Shore Horsemen's Council Inc

    EIN 043014645 · Headquarters: Rochester, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  68. South Shore Kennel Club Inc

    EIN 042349701 · Headquarters: SCITUATE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. South Shore Ladies Club Inc

    EIN 043104010 · Headquarters: Norwell, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. South Shore Race Management

    EIN 453815142 · Headquarters: DUXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. South Shore Realtors Inc

    EIN 042348535 · Headquarters: PEMBROKE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. South Shore Recovery Home Inc

    EIN 237440196 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990

  73. South Shore Seahawks Youth Hockey Inc

    EIN 237279904 · Headquarters: Norwell, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. South Shore Shrine Club

    EIN 237329297 · Headquarters: WILMINGTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. South Shore Singles Inc

    EIN 043498838 · Headquarters: Hanover, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  76. South Shore Street Rods

    EIN 834172252 · Headquarters: Scituate, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. South Shore Yacht Club Inc

    EIN 042596750 · Headquarters: NORTH WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. South Williamstown Community Association Inc

    EIN 042751459 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. South Yarmouth Library Association

    EIN 042639952 · Headquarters: SOUTH YARMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Southampton Historical Society Inc

    EIN 046143350 · Headquarters: southampton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Southampton Police Associaiton Inc

    EIN 100006616 · Headquarters: Southampton, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  82. Southampton Womans Club

    EIN 010967742 · Headquarters: southampton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Southborough Extended Day Program Inc

    EIN 042917154 · Headquarters: SOUTHBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  84. Southborough Open Land Foundation Inc

    EIN 223002718 · Headquarters: Southborough, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Southborough Rod and Gun Club Incorporated

    EIN 042819444 · Headquarters: HOPKINTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Southbridge Credit Union

    EIN 042023790 · Headquarters: SOUTHBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  87. Southcoast Educational Collaborative Federation Local 4637 Mft Aft

    EIN 043041444 · Headquarters: SWANSEA, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Southcost Kings Baseball Club Inc

    EIN 271120881 · Headquarters: Marion, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  89. Southeast Bank Security Network

    EIN 472726365 · Headquarters: South Easton, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Southeast University USA Alumni Association Inc

    EIN 471123430 · Headquarters: Brookline, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  91. Southeastern Ma Amateur Radio Assoc

    EIN 042590712 · Headquarters: SOUTH DARTMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Southeastern Mass Intl Personnel Management Assoc Human Resources

    EIN 542173536 · Headquarters: South Dennis, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  93. Southeastern Massachusetts Convention & Visitors Bureau Inc

    EIN 042501667 · Headquarters: NEW BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Southeastern Massachusetts Police Training Association Inc

    EIN 043258888 · Headquarters: E FREETOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Southeastern Massachusetts-ser Foundation

    EIN 043015125 · Headquarters: Fall River, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Southern Berkshire Regional Educati

    EIN 043261520 · Headquarters: Sheffield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Southern Massachusetts Sailing Assoc

    EIN 043384913 · Headquarters: W HYANNISPORT, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Southern Ne Athletics Inc

    EIN 262351620 · Headquarters: ROCKLAND, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  99. Southern New England Chapter of the Soil Conservation Soc of America

    EIN 042743085 · Headquarters: Amherst, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Southern Surgical Association

    EIN 581410412 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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