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. Washington Ambulatory Surgery Center Association

    EIN 911470583 · Headquarters: BELLEVUE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Washington and Lee D C Metropolitan Area Alumni Inc

    EIN 541441387 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  3. Washington and Lee Spectator

    EIN 800161540 · Headquarters: Lexington, VA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  4. Washington and Northern Idaho District Council of Laborers

    EIN 910836988 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Washington and Northern Virginia Company of Jamestown Society

    EIN 881176907 · Headquarters: Alexandria, VA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  6. Washington Apartment Association

    EIN 510194482 · Headquarters: Everett, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Washington Apple Pi Ltd

    EIN 521211971 · Headquarters: Fairfax, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Washington Area Athletic Assoc

    EIN 050596219 · Headquarters: WASHINGTON, MI, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  9. Washington Area Bicyclist Association

    EIN 237305477 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Washington Area Chamber of Commerce

    EIN 430647107 · Headquarters: WASHINGTON, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Washington Area Community Investment Fund Inc

    EIN 541442466 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Washington Area Concierge Association

    EIN 521676250 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  13. Washington Area Council of Engineering Laboratories Inc

    EIN 521344344 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Washington Area District Council

    EIN 833655470 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. Washington Area Frisbee Club Inc

    EIN 521865622 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  16. Washington Area General Service Assembly Inc

    EIN 521468119 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Washington Area Interchurch Shelter & Kitchen Inc

    EIN 581611899 · Headquarters: WASHINGTON, NC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  18. Washington Area Intergroup Association

    EIN 237243400 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  19. Washington Area Magnetic Resonance Association Inc

    EIN 992071395 · Headquarters: Gaithersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Washington Area New Automobile Dealers Association

    EIN 530162520 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Washington Area School Study Counci L Inc

    EIN 541443605 · Headquarters: Falls Church, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Washington Area Secular Humanists Inc Wash

    EIN 521640229 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Washington Area Square Dancers Cooperative Assocation

    EIN 237202631 · Headquarters: GREENBELT, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Washington Area State Relations Group

    EIN 521279984 · Headquarters: Arlington, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. Washington Area Tennis Association Inc

    EIN 272581512 · Headquarters: Washington, IN, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  26. Washington Area Tesol Association Watesol

    EIN 521130227 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Washington Arms Collectors

    EIN 911429195 · Headquarters: SUMNER, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Washington Artillery Board of Managers

    EIN 043772751 · Headquarters: METAIRIE, LA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  29. Washington Artillery Veterans Assoc

    EIN 720868248 · Headquarters: NEW ORLEANS, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Washington Asphalt Pavement Association

    EIN 910617279 · Headquarters: RENTON, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Washington Assault Accountability Unit

    EIN 461346329 · Headquarters: Airway Heights, WA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  32. Washington Assn for the Advancement of Us-china Education & Culture

    EIN 464930266 · Headquarters: Issaquah, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  33. Washington Assn of Building Officials

    EIN 911189556 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Washington Assoc of Naturopathic Physicians

    EIN 916056474 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Washington Assoc of Nurse Anesthesiology

    EIN 916057737 · Headquarters: GIG HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Washington Assoc Vehicle Sub-agents

    EIN 911146743 · Headquarters: Spokane, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Washington Association for Bilingual Education

    EIN 911395104 · Headquarters: ENTIAT, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Washington Association for Career and Technical Education

    EIN 910884663 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Washington Association for Chinese Education

    EIN 453832084 · Headquarters: Issaquah, WA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  40. Washington Association for Community Health

    EIN 911323282 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Washington Association for Food Protection

    EIN 911137030 · Headquarters: Covington, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Washington Association for Learning Alternatives

    EIN 911168890 · Headquarters: WOODLAND, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Washington Association for Pupil Transport

    EIN 911256745 · Headquarters: YAKIMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Washington Association for the Education of Speakers of Other Lan

    EIN 916184561 · Headquarters: SPOKANE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Washington Association Medical Staff Services

    EIN 943027912 · Headquarters: OAK HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Washington Association of Accounting

    EIN 237315013 · Headquarters: Spokane Valley, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Washington Association of Area Agencies on Aging

    EIN 943074816 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Washington Association of Conservation Districts

    EIN 916176150 · Headquarters: BOW, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Washington Association of Criminal Defense Lawyers

    EIN 911354688 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Washington Association of Educational Office Personnel

    EIN 916067498 · Headquarters: Connell, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  51. Washington Association of Fish

    EIN 911752584 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Washington Association of Landscape Professionals

    EIN 911257391 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Washington Association of Legal Investigators

    EIN 911811277 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Washington Association of Maintenance and Operations Administrators

    EIN 911186143 · Headquarters: MONROE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. Washington Association of Mortgage Professionals

    EIN 943031417 · Headquarters: BELLEVUE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Washington Association of Realtors

    EIN 910789552 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Washington Association of School Administrators

    EIN 237122918 · Headquarters: TUMWATER, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Washington Association of School Administrators

    EIN 911131793 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Washington Association of School Administrators

    EIN 911131800 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Washington Association of School Administrators

    EIN 911131802 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Washington Association of School Administrators

    EIN 911131803 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Washington Association of School Administrators

    EIN 911131805 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Washington Association of School Administrators

    EIN 911131806 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Washington Association of School Administrators

    EIN 911131807 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Washington Association of School Administrators

    EIN 911131808 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Washington Association of School Administrators

    EIN 911131809 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Washington Association of School Administrators

    EIN 911131810 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Washington Association of School Administrators

    EIN 911131812 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Washington Association of School Social Workers

    EIN 911332111 · Headquarters: Puyallup, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Washington Association of Sheriffs and Police Chiefs (WASPC)

    EIN 910961051 · Headquarters: Lacey, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Washington Association of Wheat Growers

    EIN 910621075 · Headquarters: RITZVILLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Washington Athletic Club

    EIN 510140348 · Headquarters: CEDAR RAPIDS, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Washington Automobile Insurance Plan

    EIN 910587372 · Headquarters: JOHNSTON, RI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Washington Automotive Industry Asso

    EIN 910719059 · Headquarters: Mill Creek, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Washington Automotive Press Association

    EIN 521438994 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. Washington Bakers Retiree Welfare Trust

    EIN 911514696 · Headquarters: BOTHELL, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Washington Baltimore Center for the Study of Group Relations

    EIN 521795921 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Washington Band Boosters Association

    EIN 813791049 · Headquarters: WASHINGTON, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Washington Bankers Association

    EIN 910459700 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  80. Washington Bar Association Inc

    EIN 521279152 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  81. Washington Barrel Racing Assoc

    EIN 916029135 · Headquarters: MOSES LAKE, WA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  82. Washington Bed & Breakfast Guild

    EIN 911672888 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  83. Washington Beer & Wine Distributors Association

    EIN 910519516 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Washington Behavioral Health Alliance

    EIN 332532017 · Headquarters: Otis Orchards, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Washington Beta Building Associatio of Pi Beta Phi Fraternity

    EIN 916068870 · Headquarters: PULLMAN, WA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  86. Washington Beverage Association

    EIN 916034505 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Washington Biologists' Field Club Inc

    EIN 526043487 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  88. Washington Blockchain Coalition

    EIN 831929242 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  89. Washington Bluegrass Association

    EIN 911187729 · Headquarters: Winlock, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Washington Blues Society

    EIN 943093057 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Washington Boat Club Inc

    EIN 356042810 · Headquarters: Loogootee, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Washington Boro Parent Teacher Org

    EIN 222917549 · Headquarters: WASHINGTON, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Washington Branch of the American Assn for Laboratory Animal Science

    EIN 911176675 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Washington Bridge League

    EIN 546047939 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Washington Bridle Trails Association

    EIN 522302695 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  96. Washington Building Congress Inc

    EIN 530162605 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  97. Washington Business Alliance

    EIN 453577272 · Headquarters: N Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Washington Campus Inc

    EIN 521140942 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Washington Canton

    EIN 900990093 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  100. Washington Capitals Fan Club Ltd

    EIN 521082567 · Headquarters: Springfield, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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