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. William L Spickzza Col USA Ret Treasurer

    EIN 541423476 · Headquarters: Kilmarnock, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. William L Valentine Elementary School Parent Teacher Association

    EIN 956206468 · Headquarters: San Marino, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. William L Whitwell Charitable Trust

    EIN 926075811 · Headquarters: Roanoke, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  4. William Laughlin

    EIN 526026224 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  5. William Laux Jr Memorial Trust Xxxxx4001

    EIN 396551971 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  6. William Leatherbee Jr Charitable Trust

    EIN 222894033 · Headquarters: WEST PALM BEACH, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. William Lee & Patrick Maurice Independent Living Llc

    EIN 850821518 · Headquarters: Virginia Beach, VA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  8. William Lenoir Ms Booster Club

    EIN 873440030 · Headquarters: Lenoir, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. William Leonard Sanderson Scholarship Fund of Aspen High School

    EIN 237059449 · Headquarters: ASPEN, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  10. William Lowell Putnam Prize Fund for the Promotion of Scholarship

    EIN 043414102 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  11. William Lynn Donnally Tw Mae E Donally Fund

    EIN 236597540 · Headquarters: BUFFALO, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  12. William Lyon Phelps Foundation

    EIN 386006236 · Headquarters: BERKLEY, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  13. William M & Donna J Hoaglin Foundation Inc

    EIN 421121634 · Headquarters: MT PLEASANT, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  14. William M & Miriam F Meehan Foundation Inc

    EIN 136062834 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  15. William M Backer Foundation Inc

    EIN 133579157 · Headquarters: MIDDLEBURG, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  16. William M Berzle

    EIN 301326769 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. William M Bill Ishida Endowment Trust

    EIN 990257946 · Headquarters: HONOLULU, HI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. William M Cage Library Trust

    EIN 546350104 · Headquarters: FREDERICKSBURG, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  19. William M Casey Foundation Inc

    EIN 237339626 · Headquarters: BROOKLYN, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. William M Hales Foundation

    EIN 363735095 · Headquarters: KENILWORTH, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  21. William M Harris Family Foundation

    EIN 581422604 · Headquarters: Atlanta, GA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  22. William M Keck Jr Foundation

    EIN 136097874 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  23. William M Miller Tw

    EIN 366581788 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  24. William M Shinnick Educational Fund

    EIN 314394168 · Headquarters: ZANESVILLE, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  25. William M Shinnick Trust Ua

    EIN 316024875 · Headquarters: NEWARK, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  26. William M Singerly Steam Fire Engine and Hook & Ladder Co 1

    EIN 526053854 · Headquarters: ELKTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. William Makepeace Atwood Scholarship Fd Co

    EIN 223269387 · Headquarters: HANOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  28. William Marconi Italian Club

    EIN 020229110 · Headquarters: KEENE, NH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. William Markham Fund

    EIN 596041746 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  30. William Marquez Friends of William Marquez

    EIN 844757157 · Headquarters: East Elmhurst, NY, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  31. William Martin Vfw Post 725

    EIN 362340764 · Headquarters: MOKENA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. William Matthes Residuary Trust

    EIN 256410706 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  33. William Matthews Auxiliary 1585

    EIN 364798719 · Headquarters: Bellingham, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. William Maul Measey Trust

    EIN 946714956 · Headquarters: HAVERFORD, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. William Max Mclaughlin Vfw Post 695 %Vfw Post 695 Commander

    EIN 883645336 · Headquarters: WAYNESBORO, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. William Mcallister Charitable Trust

    EIN 256023179 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. William McCaskey Chapman and Adaline Dinsmore Chapman Foundation

    EIN 770011251 · Headquarters: Monterey, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  38. William Mckinley Citizens Center Inc

    EIN 251423667 · Headquarters: VERONA, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. William Mckinley Elementary School Pta

    EIN 134317995 · Headquarters: San Francisco, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. William Mendenhall Middle School Ptsa

    EIN 943182503 · Headquarters: LIVERMORE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. William Morrison Trust

    EIN 426143759 · Headquarters: WEBSTER CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  42. William N Rom MD MPH Foundation

    EIN 832079661 · Headquarters: Wilmington, DE, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  43. William Neal Reynolds Residuary Trust Dtd

    EIN 566036636 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  44. William O & Gertrude L Frohring Fdn Im

    EIN 346516526 · Headquarters: WILMINGTON, DE, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  45. William O Baldwin Trust Fbo Lyman Ward

    EIN 636019142 · Headquarters: BIRMINGHAM, AL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  46. William O Burnett Charitable Foundation

    EIN 264392223 · Headquarters: FERNANDINA BEACH, FL, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  47. William O Emery Tr F No Parish Chrch

    EIN 016006980 · Headquarters: PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  48. William O Emery Tr F Town of Sanford

    EIN 016006981 · Headquarters: PORTLAND, ME, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. William O Moseley Tui

    EIN 042771098 · Headquarters: DALLAS, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  50. William O Moseley Tui

    EIN 046393242 · Headquarters: DALLAS, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  51. William O Murphy Foundation

    EIN 911531342 · Headquarters: Spokane, WA, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  52. William O Ramsey Tw Fbo St John's

    EIN 236722720 · Headquarters: BUFFALO, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  53. William Orr Dingwall Foundation Inc C/o John D Ward Esquire

    EIN 521877552 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  54. William P & Gertrude Schweitzer

    EIN 136160772 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  55. William P Anderson Foundation Central Trust

    EIN 316034059 · Headquarters: SCITUATE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  56. William P Billy Isbir Foundation

    EIN 251826931 · Headquarters: McKeesport, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. William P Bomar Jr Tr a Xxxxx0001

    EIN 756014222 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. William P Hannah & Family Trust Co Valley

    EIN 566604066 · Headquarters: PARAMUS, NJ, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  59. William P Ingersoll Trust Xxxxx8005

    EIN 366584340 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  60. William P Newman Foundation

    EIN 261634059 · Headquarters: Riverton, UT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  61. William P Spyker Home Association

    EIN 991072214 · Headquarters: ALEXANDRIA, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. William P Wharton Trust UW Art 2(D)

    EIN 046407797 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  63. William P. Duval Chapter, Inc., NSDAR

    EIN 596151124 · Headquarters: Winter Park, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. William Pargman Activity Fund Camp Airy

    EIN 521147421 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. William Paterson Aft Local #1796

    EIN 237016721 · Headquarters: WAYNE, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. William Paterson University of New Jersey Auxiliary Organization Inc

    EIN 222004829 · Headquarters: WAYNE, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. William Paterson University of New Jersey Foundation Inc

    EIN 223160107 · Headquarters: WAYNE, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. William Peace University PAD Prelaw Chapter

    EIN 472059060 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. William Penn Association

    EIN 042633464 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. William Penn Association

    EIN 232791047 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. William Penn Association

    EIN 237538879 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. William Penn Association

    EIN 237538883 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. William Penn Association

    EIN 237538884 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. William Penn Association

    EIN 237538885 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. William Penn Association

    EIN 237538886 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  76. William Penn Association

    EIN 237538888 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. William Penn Association

    EIN 237538889 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. William Penn Association

    EIN 237538891 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. William Penn Association

    EIN 237538892 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  80. William Penn Association

    EIN 237538894 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. William Penn Association

    EIN 237538895 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. William Penn Association

    EIN 237538896 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. William Penn Association

    EIN 237538899 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. William Penn Association

    EIN 237538905 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. William Penn Association

    EIN 237538907 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. William Penn Association

    EIN 237538909 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. William Penn Association

    EIN 237538917 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. William Penn Association

    EIN 237538921 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. William Penn Association

    EIN 237538926 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. William Penn Association

    EIN 237538928 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. William Penn Association

    EIN 237538932 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. William Penn Association

    EIN 237538940 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. William Penn Association

    EIN 237538942 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. William Penn Association

    EIN 237538945 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. William Penn Association

    EIN 237538948 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. William Penn Association

    EIN 237538949 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. William Penn Association

    EIN 237538951 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. William Penn Association

    EIN 237538952 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. William Penn Association

    EIN 237538954 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. William Penn Association

    EIN 237538955 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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