Unknown & Unclassified nonprofits

Unknown & Unclassified nonprofits. Browse 557,756 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. Masonry Industry Program Trust

    EIN 930769082 · Headquarters: Portland, OR, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Masonry Industry Promotional Fund

    EIN 510188388 · Headquarters: SPOKANE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Masonry Industry Training Association of Southern California

    EIN 954653212 · Headquarters: Riverside, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Masonry Institute of America

    EIN 952139991 · Headquarters: TORRANCE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Masonry Institute of Dayton

    EIN 237404348 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Masonry Institute of Hawaii

    EIN 237346680 · Headquarters: MILILANI, HI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Masonry Institute of Iowa

    EIN 421146129 · Headquarters: Johnston, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Masonry Institute of Michigan Inc

    EIN 381856805 · Headquarters: LIVONIA, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Masonry Institute of Oregon

    EIN 930559340 · Headquarters: Portland, OR, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Masonry Institute of Southern Illinois

    EIN 371076169 · Headquarters: ST LIBORY, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Masonry Institute of St Louis

    EIN 237166088 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  12. Masonry Institute of Tennessee Inc

    EIN 620986020 · Headquarters: CHATTANOOGA, TN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Masonry Security Plan of Washington

    EIN 916028573 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Masonry Welfare Trust

    EIN 936023043 · Headquarters: Portland, OR, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Masons & Plasterers Fraternal Assoc

    EIN 990186599 · Headquarters: HONOLULU, HI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  16. Masons Island Yacht Club Inc

    EIN 060714276 · Headquarters: MYSTIC, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Masons Missions Organization Inc

    EIN 820822971 · Headquarters: SAINT JOHN, IN, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  18. Masons of California - California Hispanic & Latin America

    EIN 993041059 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Masons of Massachusetts Dalhousie Lodge

    EIN 237170804 · Headquarters: NEWTON HIGHLANDS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Masons' Health and Welfare Trust Fund

    EIN 996014747 · Headquarters: HONOLULU, HI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Masontown Business & Professional Womens Club

    EIN 383852802 · Headquarters: Smithfield, PA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  22. Masontown Masonic Building Corporation

    EIN 251446639 · Headquarters: Masontown, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Masonville Fire Company 1

    EIN 223143572 · Headquarters: Mt Laurel, NJ, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  24. Masonville Fire Department Inc

    EIN 310886230 · Headquarters: UTICA, KY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  25. Masonville Greenwood Cemetery Association Inc

    EIN 421225015 · Headquarters: Manchester, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Masque Alfresco

    EIN 810649175 · Headquarters: Woodburn, OR, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  27. Masque and Gavel Inc

    EIN 010627110 · Headquarters: CLEARWATER, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Masque Theater Incorporated

    EIN 223035157 · Headquarters: Castroville, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Masque Unit Junior Theatre of Marin

    EIN 237119040 · Headquarters: SAN RAFAEL, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Masquers of Grant County

    EIN 911153865 · Headquarters: SOAP LAKE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Masquers Theatre Company

    EIN 411291628 · Headquarters: Forest Lake, MN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  32. Mass Assoc of Criminal Defense Lawyers

    EIN 223234036 · Headquarters: Worcester, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  33. Mass Association of Accountantsinc

    EIN 237135793 · Headquarters: PEABODY, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  34. Mass Ave Cultural Arts District Inc

    EIN 863612591 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Mass Bay Credit Union

    EIN 041104060 · Headquarters: SOUTH BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Mass Bay Intergroup Inc

    EIN 042763938 · Headquarters: ARLINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  37. Mass Board of Real Estate Appraisers

    EIN 042706453 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  38. Mass Building Commissioners

    EIN 042716402 · Headquarters: ROWLEY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. Mass Business Educators Assn

    EIN 042667909 · Headquarters: Swampscott, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  40. Mass Coalition of Taft-hartley Trust Funds

    EIN 043214282 · Headquarters: TAUNTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Mass Council of Adult Foster Care

    EIN 042889803 · Headquarters: SPRINGFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Mass Credit Union Share Insurance Corp

    EIN 042296410 · Headquarters: NEWTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  43. Mass Delta Alumni Corp of Sigma Phi Epsilon Fraternity

    EIN 237314924 · Headquarters: FOREST HILLS, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Mass Destruction Football and Cheer

    EIN 332611018 · Headquarters: BROCKTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Mass Divest Incorporated

    EIN 834638900 · Headquarters: Lowell, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  46. Mass Eta of Phi Kappa Theta Alumni Corp

    EIN 046063508 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  47. Mass Flower Growers Associationinc

    EIN 046605795 · Headquarters: BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Mass General Brigham Health Plan

    EIN 042932021 · Headquarters: SOMERVILLE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Mass Glass Dealers Association C/o Tcors

    EIN 042577680 · Headquarters: GLASTONBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  50. Mass L E a P Inc

    EIN 811668473 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  51. Mass Labor Action Network Inc

    EIN 834617227 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Mass Maple Producers Association Inc C/o Melissa Leab

    EIN 042377840 · Headquarters: HANCOCK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Mass Restaurant Association Inc

    EIN 041591041 · Headquarters: WESTBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Mass School Library Association Inc

    EIN 223238052 · Headquarters: Wayland, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Mass Shooting Database

    EIN 872439843 · Headquarters: Arlington, VA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  56. Mass Soc of Professors the University of Massachusetts Lowell

    EIN 042648751 · Headquarters: LOWELL, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Mass Society for Univ Education of Women

    EIN 046145949 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. Mass Society of Eye Physician & Surgeons Inc

    EIN 237208474 · Headquarters: Natick, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Mass State Foxhound Assoication

    EIN 043519195 · Headquarters: CARVER, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  60. Mass Storm Softball Inc

    EIN 881994081 · Headquarters: New Bedford, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  61. Mass Teachers Assn 292 Edu Assn of Ply & Cvr

    EIN 237128526 · Headquarters: Plymouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Mass Teachers Association

    EIN 042667903 · Headquarters: Mattapoisett, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Mass Teachers Association

    EIN 237128536 · Headquarters: GLOUCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Mass Technology Leadership Council

    EIN 042910567 · Headquarters: DEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Mass Theatrica

    EIN 202318158 · Headquarters: Shrewsbury, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  66. Mass Uniting Inc

    EIN 451628839 · Headquarters: MARLBOROUGH, MA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  67. Mass Warriors Basketball Corporation

    EIN 882375123 · Headquarters: Chelsea, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. Mass Xplosion

    EIN 043484551 · Headquarters: New Bedford, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  69. Mass-ala

    EIN 043237159 · Headquarters: Waltham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. Mass-india Partnership

    EIN 812780742 · Headquarters: BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Massa-schussers Ski Club Inc

    EIN 237381006 · Headquarters: Jamaica Plain, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Massabersic Education Association

    EIN 263776551 · Headquarters: Biddeford, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Massabesic Lions Club

    EIN 237206671 · Headquarters: ALFRED, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Massabesic Lions Club Regional

    EIN 010377300 · Headquarters: Waterboro, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Massabesic Yacht Club

    EIN 020417311 · Headquarters: Manchester, NH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Massac County Farm Bureau

    EIN 370667488 · Headquarters: Metropolis, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Massac County Historical Society

    EIN 371017619 · Headquarters: METROPOLIS, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Massac County Homemakers Extension Association

    EIN 370667343 · Headquarters: Metropolis, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Massac County Retired Teachers Asso Ciation

    EIN 371316596 · Headquarters: Metropolis, IL, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  80. Massachuseetts Association of Teacher Attorneys Inc

    EIN 222500393 · Headquarters: Quincy, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  81. Massachusett Automatic Merchandising Council Inc

    EIN 110029023 · Headquarters: Mansfield, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  82. Massachusetts 4-H Foundation Inc

    EIN 042303708 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Massachusetts Academy of Dermatology

    EIN 042551359 · Headquarters: BOXBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Massachusetts Academy of General Dentistry

    EIN 237240701 · Headquarters: Quincy, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Massachusetts Academy of Nutrition & Dietetics

    EIN 043253489 · Headquarters: Medway, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Massachusetts Action to Prevent Gun Violence Inc

    EIN 333017706 · Headquarters: BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Massachusetts Adoption Resource Exchange Inc

    EIN 042227431 · Headquarters: Newton, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Massachusetts Agriculture in the Classroom Inc

    EIN 042868605 · Headquarters: MARLBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Massachusetts Airport Management Association Inc

    EIN 043283328 · Headquarters: Plymouth, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. Massachusetts Allergy & Asthma Society Inc

    EIN 042629468 · Headquarters: LEOMINSTER, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Massachusetts Alliance for Chiropractic Philosophy Inc

    EIN 043122947 · Headquarters: Burlington, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. Massachusetts Alliance for Economic Development Inc

    EIN 043172007 · Headquarters: WATERTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Massachusetts Ambulance Association Inc

    EIN 010894923 · Headquarters: BURLINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  94. Massachusetts and Northern New England Laborers District Council

    EIN 042424311 · Headquarters: Hopkinton, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  95. Massachusetts Archeological Society Inc

    EIN 046066001 · Headquarters: MIDDLEBORO, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  96. Massachusetts Assoc of Patient Acct Mgmt Inc

    EIN 510192427 · Headquarters: Granby, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  97. Massachusetts Association for Mental Health Inc

    EIN 042104711 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Massachusetts Association for Occupational Therapy Inc

    EIN 042594792 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. Massachusetts Association for Psychoanalytic Psychology

    EIN 043044502 · Headquarters: Sudbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. Massachusetts Association of Ambulatory Surgery Centers Inc

    EIN 043173779 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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