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. National Society Dames of the Court of Honor

    EIN 237144568 · Headquarters: Dedham, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  2. National Society Daughters of Founders & Patriots of America

    EIN 237584663 · Headquarters: Millis, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. National Society Daughters of the American Revolution

    EIN 300577150 · Headquarters: South Yarmouth, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. National Society Daughters of the Union 1861-1865

    EIN 834157374 · Headquarters: Merrimac, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. National Society of Black Engineers Boston Professionals

    EIN 043432136 · Headquarters: Jamaica Plain, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  6. National Society of the Children of the American Revolution

    EIN 237248855 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. National Society of the Children of the American Revolution

    EIN 261425830 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. National Society of the Children of the American Revolution

    EIN 262383952 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. National Society of the Children of the American Revolution

    EIN 510675164 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. National Society of the Children of the American Revolution

    EIN 873947024 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. National Society of the Daughters of the American Revolution

    EIN 042688422 · Headquarters: Nantucket, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. National Society of the Daughters of the American Revolution

    EIN 043094016 · Headquarters: Westwood, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. National Society of the Daughters of the American Revolution

    EIN 043171592 · Headquarters: Winthrop, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. National Society of the Daughters of the American Revolution

    EIN 043398743 · Headquarters: Edgartown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. National Society of the Daughters of the American Revolution

    EIN 046047918 · Headquarters: Onset, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. National Society of the Daughters of the American Revolution

    EIN 046048141 · Headquarters: Pepperell, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. National Society of the Daughters of the American Revolution

    EIN 046048755 · Headquarters: WESTFORD, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Society of the Daughters of the American Revolution

    EIN 046050736 · Headquarters: Middleton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. National Society of the Daughters of the American Revolution

    EIN 046053237 · Headquarters: Uxbridge, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. National Society of the Daughters of the American Revolution

    EIN 046054572 · Headquarters: Wellesley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. National Society of the Daughters of the American Revolution

    EIN 046057355 · Headquarters: Mansfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. National Society of the Daughters of the American Revolution

    EIN 046057629 · Headquarters: Framingham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. National Society of the Daughters of the American Revolution

    EIN 046065916 · Headquarters: DOUGLAS, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. National Society of the Daughters of the American Revolution

    EIN 046067330 · Headquarters: Hanover, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. National Society of the Daughters of the American Revolution

    EIN 046071076 · Headquarters: Marlborough, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. National Society of the Daughters of the American Revolution

    EIN 046087738 · Headquarters: Danvers, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. National Society of the Daughters of the American Revolution

    EIN 046088747 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. National Society of the Daughters of the American Revolution

    EIN 046111616 · Headquarters: WEYMOUTH, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. National Society of the Daughters of the American Revolution

    EIN 046111774 · Headquarters: Rockport, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. National Society of the Daughters of the American Revolution

    EIN 046111835 · Headquarters: Malden, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. National Society of the Daughters of the American Revolution

    EIN 046112283 · Headquarters: North Dartmouth, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. National Society of the Daughters of the American Revolution

    EIN 046112349 · Headquarters: East Longmeadow, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. National Society of the Daughters of the American Revolution

    EIN 046112823 · Headquarters: Concord, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. National Society of the Daughters of the American Revolution

    EIN 046112858 · Headquarters: Auburn, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. National Society of the Daughters of the American Revolution

    EIN 046113114 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. National Society of the Daughters of the American Revolution

    EIN 046119537 · Headquarters: Belmont, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. National Society of the Daughters of the American Revolution

    EIN 046119575 · Headquarters: Merrimac, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. National Society of the Daughters of the American Revolution

    EIN 046129176 · Headquarters: Needham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. National Society of the Daughters of the American Revolution

    EIN 237027555 · Headquarters: Plymouth, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. National Society of the Daughters of the American Revolution

    EIN 331459542 · Headquarters: Quincy, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. National Society of the Daughters of the American Revolution

    EIN 833469974 · Headquarters: Dover, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. National Society of the Daughters of the American Revolution

    EIN 853855603 · Headquarters: Saugus, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. National Society of the Sons of the American Revolution

    EIN 043211087 · Headquarters: Dennis, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. National Society of the Sons of the American Revolution

    EIN 043252657 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. National Society of the Sons of the American Revolution

    EIN 046143784 · Headquarters: Leominster, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. National Society of the Sons of the American Revolution

    EIN 271414510 · Headquarters: PLYMOUTH, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  47. National Society of the Sons of the American Revolution

    EIN 311226796 · Headquarters: Plymouth, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. National Society of the Sons of the American Revolution

    EIN 311457995 · Headquarters: Lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. National Society of the Sons of the American Revolution

    EIN 463271883 · Headquarters: WILBRAHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National Society of the Sons of the American Revolution

    EIN 800678344 · Headquarters: AVON, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  51. National Society of Tole & Decorative Painters

    EIN 050384882 · Headquarters: MILLVILLE, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  52. National Society Sons of the American Revolution

    EIN 680662970 · Headquarters: Scituate, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. National Society United States Daughters of 1812

    EIN 237400263 · Headquarters: Lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. National Tay-sachs & Allied Diseases Ass

    EIN 131912877 · Headquarters: BRIGHTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. National Treasury Employees Union

    EIN 042709476 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. National Treasury Employees Union

    EIN 042987028 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. National Treasury Employees Union

    EIN 043146957 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. National Treasury Employees Union

    EIN 046111663 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. National Treasury Employees Union

    EIN 222554291 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. National Youth Sports Safety Foundation

    EIN 043014030 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  61. Nationary Treasury Employees Union Chapter 133

    EIN 510192083 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Nativity School of Worcester Inc

    EIN 030385377 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Nativity-boston Inc

    EIN 043063140 · Headquarters: JAMAICA PLAIN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Natl Assoc of Letter Carriers Branch 46

    EIN 046188849 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. Natural Resources Trust of Mansfield Inc

    EIN 237209423 · Headquarters: MANSFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  66. Natural Resources Trust of Plainville Inc

    EIN 042626445 · Headquarters: Plainville, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  67. Nature-Knowledge-Health

    EIN 841972862 · Headquarters: N ATTLEBORO, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  68. Nau-sets Square Dance Club Inc

    EIN 043201485 · Headquarters: Orleans, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  69. Nauset Beach Lifeguard Alumni Association Inc

    EIN 990973817 · Headquarters: Brewster, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Nauset Education Associationinc Att Rosemary Johnson (Treasurer)

    EIN 043166388 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  71. Nauset Heights Association Inc

    EIN 222507887 · Headquarters: East Orleans, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Nauset Newcomers Inc

    EIN 042625210 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Naveo Credit Union

    EIN 041144988 · Headquarters: SOMERVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Navigator Foundation Inc

    EIN 222477941 · Headquarters: Beverly Farms, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Navigator Homes of Marthas Vineyard

    EIN 845182763 · Headquarters: Vineyard Haven, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Navy Seabee Veterans of America

    EIN 911778425 · Headquarters: SAUGUS, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. Navy Seabee Veterans of America

    EIN 912114578 · Headquarters: SAUGUS, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  78. Navy Seabee Veterans of America

    EIN 912114581 · Headquarters: PLYMOUTH, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Nbea Health and Welfare Fund

    EIN 046744659 · Headquarters: NEW BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Nbm Highway Association Inc

    EIN 042880104 · Headquarters: NORTH EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Nbt Charitable Trust

    EIN 046677641 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. Ncda Region I-new England

    EIN 043254193 · Headquarters: Quincy, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Ne Federation of Mens Glee Club

    EIN 237038816 · Headquarters: Weston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Ne Service Station and Auto Repair Association Inc

    EIN 042538304 · Headquarters: BILLERICA, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Neachmm Ahmp New England Chapter Inc

    EIN 043235180 · Headquarters: Burlington, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Needham Community Council Inc

    EIN 042121365 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Needham Extended Day Program Inc

    EIN 042794020 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Needham Golf Club Inc

    EIN 041655650 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  89. Needham High School 1965 Reunion Committee Inc

    EIN 465478273 · Headquarters: NEEDHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  90. Needham Knights of Columbus Building Association Inc

    EIN 042499234 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Needham Open Studios Inc

    EIN 833225151 · Headquarters: Needham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Needham Platform Tennis Club

    EIN 852971320 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Needham Police Union

    EIN 222588190 · Headquarters: Needham, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  94. Needham Pool & Racquet Club Inc

    EIN 042314616 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Needham Rotary Club Memorial Scholarship Fund

    EIN 046242879 · Headquarters: WALPOLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Needham Sportsmans Club

    EIN 412275304 · Headquarters: Needham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Needham Tennis Club Inc

    EIN 042212009 · Headquarters: Needham, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  98. Neetega Club of Natick Corp

    EIN 043417753 · Headquarters: Natick, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Neighborhood Assistance Corporation of America

    EIN 043244616 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Neighborhood Club

    EIN 041655980 · Headquarters: NEWTONVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

First page and all pages