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. Nuestra Development Fund Inc

    EIN 752994759 · Headquarters: ROXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Nueva Vida Inc

    EIN 043131333 · Headquarters: MALDEN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Nurse Practitioner Associates for Continuing Education Inc

    EIN 042725301 · Headquarters: NATICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Nursestakedc

    EIN 825159337 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  5. Nurtury Inc

    EIN 042105893 · Headquarters: ROXBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. O'dell Women's Center Inc

    EIN 866746563 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Oa Bargaining Unit Sunshine Fund

    EIN 611685369 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  8. Oak Bluffs Assocation Inc

    EIN 043110673 · Headquarters: Oak Bluffs, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  9. Oak Bluffs School Parent Teacher Organization

    EIN 043066372 · Headquarters: Oak Bluffs, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  10. Oak Grove Cemetery Association of Falmouth Inc

    EIN 222945788 · Headquarters: FALMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Oak Grove Cemetery of Springfield Inc

    EIN 042264222 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Oak Hill Country Club

    EIN 041683440 · Headquarters: FITCHBURG, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  13. Oak Hill Inc

    EIN 042954430 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Oak Hill Park Association Inc C/o Jessica Gashin

    EIN 042109778 · Headquarters: NEWTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Oak Meadow Montessori School Inc

    EIN 042629516 · Headquarters: LITTLETON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Oak Point Homeowners Scholarship Fund Inc

    EIN 853931003 · Headquarters: Middleboro, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. Oakdale Cemetary Assoc Inc S

    EIN 046062982 · Headquarters: WEST BOYLSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Oasis Healthy Lives Inc

    EIN 883730067 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  19. Oasis Open

    EIN 251720375 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Obermayer Foundation Inc

    EIN 042711822 · Headquarters: DEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  21. Object Management Group Inc

    EIN 043047994 · Headquarters: MILFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Ocean Shores Tenants Rights Association

    EIN 264348287 · Headquarters: Lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  23. Oceanic Labs Research Foundation

    EIN 870824831 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  24. Oceanic Research Group Inc

    EIN 223240599 · Headquarters: NORTH READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Oceanside Business Association Inc

    EIN 452688506 · Headquarters: Sagamore Beach, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  26. Ocf Foundation Inc

    EIN 136007727 · Headquarters: ALFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  27. Ocie M Downey Trust U W

    EIN 616156048 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  28. Octopus Garden

    EIN 205467424 · Headquarters: Winchendon, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Odd Fellows Home of Massachusetts Inc

    EIN 042104414 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Odyssey Chamber Players Inc

    EIN 112627050 · Headquarters: Marion, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Oedel Foundation

    EIN 046655524 · Headquarters: N ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  32. Office & Professional Employees International Union Local 6

    EIN 042028226 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Office & Professional Employees Opeiu Local 600

    EIN 042935859 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Office & Professional Employees Opeiu453

    EIN 237280535 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Og Vibes Foundation Inc

    EIN 934425157 · Headquarters: North Chelmsford, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  36. Ogden Codman Tr Uwo Dorothy Sfm Codman C/o Verrill Dana Llp

    EIN 046225360 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Olaleye Communications Inc

    EIN 042957149 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Old Bridgewater Historical Society

    EIN 046121711 · Headquarters: West Bridgewater, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  39. Old Chelmsford Garrison House Association

    EIN 042721004 · Headquarters: Chelmsford, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  40. Old Colony & Fall River RR Museum

    EIN 042952729 · Headquarters: Fall River, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Old Colony Club Inc

    EIN 042081412 · Headquarters: PLYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Old Colony Elder Services Inc

    EIN 042545236 · Headquarters: BROCKTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Old Colony Habitat for Humanity

    EIN 043014778 · Headquarters: RAYNHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Old Colony Historical Society

    EIN 042308455 · Headquarters: TAUNTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  45. Old Colony Library Network Inc

    EIN 042925259 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Old Colony Montessori School Inc

    EIN 042319056 · Headquarters: HINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Old Colony Sportsmens Association

    EIN 046112319 · Headquarters: PEMBROKE, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  48. Old Deerfield Nursery School Inc

    EIN 043042212 · Headquarters: Deerfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  49. Old Ladies Home Society Inc

    EIN 042104810 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. Old Mill Point Associates Inc

    EIN 237046597 · Headquarters: West Harwich, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  51. Old North Bridge Hounds Inc

    EIN 042642350 · Headquarters: Berlin, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Old Silver Beach Homeowners Association Inc

    EIN 042850725 · Headquarters: N FALMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Oldways Preservation and Exchange Trust Inc

    EIN 043031978 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Omega Psi Phi Fraternity Inc - Gamma Chapter

    EIN 300474575 · Headquarters: Roxbury, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  55. Omega Psi Phi Fraternity Iota Chi Chapter

    EIN 900616903 · Headquarters: cambridge, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  56. Omega Star-child Seminars Aka Light Omega

    EIN 223070052 · Headquarters: AMHERST, MA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  57. On Luck Housing Development Inc

    EIN 042647967 · Headquarters: BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. On Pace with Mylli

    EIN 300746413 · Headquarters: Hyde Park, MA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  59. One Commonwealth Inc

    EIN 992551833 · Headquarters: Dedham, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. One Stop to Fabulous

    EIN 811717103 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. One Thousand Southern Artery Senior Citizens Center Inc

    EIN 046145423 · Headquarters: QUINCY, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  62. One World Fund

    EIN 046485766 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  63. Oneld Community Association Inc

    EIN 874038491 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Oneleaf Corp

    EIN 854048270 · Headquarters: WORCESTER, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Onset Campgrounds Community Associa Tion Inc

    EIN 394007024 · Headquarters: Onset, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Opeiu Local 6 Trial Court of Massachusetts Health & Welfare Fund

    EIN 222582112 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Open Church Foundation

    EIN 042108377 · Headquarters: WELLESLEY HILLS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  68. Open Circle Alliance Inc

    EIN 993507374 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Openmainframe Inc

    EIN 272537019 · Headquarters: Boxford, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  70. Operation Paperback Inc

    EIN 412209836 · Headquarters: Dunstable, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Operation Winchendon Cares

    EIN 760777429 · Headquarters: Winchendon, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Opportunities for Hope Inc

    EIN 222515061 · Headquarters: FITCHBURG, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Opportunity Matters Network Inc

    EIN 861750249 · Headquarters: BEVERLY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Opticians Association of MA Inc

    EIN 042955807 · Headquarters: Medway, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Optineeds

    EIN 813600764 · Headquarters: Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Ora Gaylord Arooth Trust Dated 4142000 Carol a Rowley Trustee

    EIN 046929348 · Headquarters: BREWSTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  77. Orange Gun Club Inc

    EIN 223181815 · Headquarters: ORANGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. Orange Historical Society Inc

    EIN 042576755 · Headquarters: Orange, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Orange Scholarship Foundation

    EIN 046138742 · Headquarters: ORANGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  80. Orchard Park Revitalization Corporation

    EIN 043284201 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Orchard View Elderly Housing Inc

    EIN 222621294 · Headquarters: HOLYOKE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Order & Liberty Inc

    EIN 812725000 · Headquarters: WRENTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  83. Order of Commerical Travelers of America

    EIN 901138349 · Headquarters: LYNN, MA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  84. Order of Eastern Star of Maine

    EIN 237540396 · Headquarters: NATICK, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Order of Eastern Star of Massachusettes 109 Samoset

    EIN 237573865 · Headquarters: Foxborough, MA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  86. Order of Eastern Star of Massachusetts 130 Wisdom

    EIN 237573883 · Headquarters: West Stockbridge, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. Order of the Amaranth Inc

    EIN 272263178 · Headquarters: Holden, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Order of the White Shrine of Jerusalem

    EIN 237514315 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Organic Torah Inc

    EIN 273263690 · Headquarters: Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Organization of Nurse Leaders Inc

    EIN 042658180 · Headquarters: Whitinsville, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Organization Pro-education & Development Inc

    EIN 042679835 · Headquarters: Northampton, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Orient Heights Yacht Club Inc

    EIN 042503211 · Headquarters: EAST BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Original Steppers of Boston Inc 2016

    EIN 815060157 · Headquarters: JAMAICA PLAIN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Orleans Cemetery Association

    EIN 042156763 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Orleans Chamber of Commerce

    EIN 042606857 · Headquarters: Orleans, MA, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Orleans Eastham Lodge #2572 Bpoe of the USA Inc

    EIN 043306725 · Headquarters: EASTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Orleans Farmers Market

    EIN 010711285 · Headquarters: Orleans, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Orleans Firemens Relief Association Inc

    EIN 042655865 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  99. Orleans Police Officers Federation Inc

    EIN 042654858 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  100. Orleans Rescue Squad Association Inc

    EIN 042744118 · Headquarters: ORLEANS, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

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