Unknown & Unclassified nonprofits in Washington

Unknown & Unclassified nonprofits in Washington. Browse 12,928 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. Alumni Association of the University of Washington School of Dentistry

    EIN 237368631 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Alwa Foundation

    EIN 814875202 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  3. Alzheimer Society of Washington

    EIN 911238368 · Headquarters: Bellingham, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Amac

    EIN 934967820 · Headquarters: Bellevue, WA, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Amalgamated Transit Union

    EIN 521686479 · Headquarters: Spokane Valley, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Amalgamated Transit Union #843

    EIN 916054331 · Headquarters: Bellingham, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Amalgamated Transit Union Local 1015

    EIN 910124095 · Headquarters: SPOKANE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. Amalgamated Transit Union Local 1765

    EIN 352304439 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. Amalgamated Transit Union Local 587

    EIN 910124097 · Headquarters: Tukwila, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Amalgamated Transit Union Local 758

    EIN 910405901 · Headquarters: TACOMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Amalgamated Transit Union Local 883

    EIN 237119402 · Headquarters: EVERETT, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  12. Amara

    EIN 910577487 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Amateur Athletic Union of the Pacific Northwest AAU

    EIN 134290199 · Headquarters: Sumner, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  14. Amateur Athletic Union of the States Inc

    EIN 843040289 · Headquarters: Camas, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  15. Amateur Athletic Union of the United States

    EIN 263288994 · Headquarters: Sammamish, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  16. Amateur Athletic Union of the United States

    EIN 882431655 · Headquarters: Brewster, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Amateur Athletic Union of the United States Inc

    EIN 465681439 · Headquarters: RICHLAND, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Amateur Athletic Union of the United States Inc

    EIN 814545621 · Headquarters: Allyn, WA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  19. Amateur Athletic Union of the United States Inc

    EIN 842877923 · Headquarters: Kennewick, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  20. Amateur Athletic Union of the United States Inc

    EIN 900893761 · Headquarters: Port Angeles, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  21. Amateur Athletic Union of the United States Inland Empire AAU

    EIN 134290203 · Headquarters: Yakima, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Amateur Athletic Union of the US Yakima Valley Sports Authority

    EIN 911745071 · Headquarters: Yakima, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Amature Athletic Union of the United States Inc

    EIN 454510555 · Headquarters: Maple Valley, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Amazon Employees for Climate Justice

    EIN 883855441 · Headquarters: seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  25. Amberleas Theatre

    EIN 800450795 · Headquarters: Leavenworth, WA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  26. Amboy Church of the Nazarene

    EIN 910957655 · Headquarters: AMBOY, WA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  27. Amboy Territorial Days Association

    EIN 911087578 · Headquarters: AMBOY, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Amer Fed of Labor & Central Washington Bldg & Construction Trades Council

    EIN 911479865 · Headquarters: PASCO, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. America Legion

    EIN 916075470 · Headquarters: Auburn, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. American Academy of Family Physicians

    EIN 237055508 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. American Academy of Family Physicians

    EIN 237055509 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. American Academy of Family Physicians

    EIN 237055513 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. American Academy of Family Physicians

    EIN 237055514 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. American Academy of Family Physicians

    EIN 237055517 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. American Academy of Family Physicians

    EIN 237309821 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. American Academy of Family Physicians

    EIN 363383054 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. American Academy of Family Physicians

    EIN 363383071 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. American Academy of Family Physicians

    EIN 363383743 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. American Academy of Family Physicians

    EIN 363383757 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. American Academy of Family Physicians

    EIN 363383759 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. American Academy of Family Physicians

    EIN 363703292 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. AMERICAN ACADEMY OF FAMILY PHYSICIANS Inland Northwest Chapter

    EIN 237055510 · Headquarters: Spokane, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. American Academy of Matrimonial Lawyers C/o David Starks

    EIN 911692915 · Headquarters: KIRKLAND, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. American Academy of Orthotists and Prosthetists

    EIN 820352095 · Headquarters: Onalaska, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. American Art Therapy Association Inc

    EIN 911898665 · Headquarters: Silverdale, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. American Association for Nude Recreation Northwest Region

    EIN 916059862 · Headquarters: Sultan, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. American Association of Handwriting Analysts

    EIN 362989989 · Headquarters: Lacey, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. American Association of Public Health Physicians

    EIN 741672791 · Headquarters: ILWACO, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. American Association of University Women

    EIN 200758765 · Headquarters: Lynnwood, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. American Association of University Women

    EIN 237404817 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  51. American Association of University Women

    EIN 237410011 · Headquarters: Garfield, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  52. American Association of University Women

    EIN 911087716 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. American Association of University Women

    EIN 911310129 · Headquarters: Vancouver, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. American Association of University Women

    EIN 911333810 · Headquarters: Redmond, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. American Association of University Women

    EIN 916033390 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Association of University Women

    EIN 916037957 · Headquarters: Longview, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. American Association of University Women

    EIN 916054208 · Headquarters: Dayton, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Association of University Women

    EIN 916054212 · Headquarters: Redmond, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Association of University Women

    EIN 916055700 · Headquarters: Port Townsend, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Association of University Women

    EIN 916057623 · Headquarters: West Richland, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  61. American Association of University Women

    EIN 916057625 · Headquarters: Chehalis, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. American Association of University Women

    EIN 916058652 · Headquarters: Des Moines, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. American Association of University Women

    EIN 943137986 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. American Association of University Women Inc

    EIN 364626575 · Headquarters: Puyallup, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. American Association of University Women Inc

    EIN 911049520 · Headquarters: Tumwater, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. American Association of University Women Inc

    EIN 916029386 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  67. American Association of University Women Inc

    EIN 916034415 · Headquarters: Battle Ground, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Association of University Women Inc

    EIN 916035370 · Headquarters: WALLA WALLA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. American Association of University Women Inc

    EIN 916054215 · Headquarters: Long Beach, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. American Association of University Women Inc

    EIN 916054326 · Headquarters: Bellingham, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. American Association of University Women Seattle

    EIN 910675303 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. American Association of University Women Twin Harbors Branch

    EIN 237050919 · Headquarters: Grayland, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. American Association of Women

    EIN 953922910 · Headquarters: WALLA WALLA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. American Association of Zoo Keepers

    EIN 454377246 · Headquarters: Eatonville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. American Association of Zoo Keepers

    EIN 911495564 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. American Association of Zoo Keepers

    EIN 911496131 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American Bamboo Society

    EIN 953754388 · Headquarters: CHENEY, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. American Brittany Club Inc

    EIN 916056084 · Headquarters: wenatchee, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. American Brittany Club Inc

    EIN 916177493 · Headquarters: Rosalia, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. American Chemical Society

    EIN 020607278 · Headquarters: Kennewick, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. American Chemical Society

    EIN 916054074 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. American Chemical Society

    EIN 916054075 · Headquarters: Richland, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. American Chemical Society

    EIN 916055305 · Headquarters: PULLMAN, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. American Chemical Society

    EIN 916058517 · Headquarters: Cheney, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. American Civil Liberties Union of Washington

    EIN 910683589 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. American Coalition for Equality

    EIN 832048716 · Headquarters: Bellevue, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. American College of Cardiology Co - Chapter

    EIN 841125559 · Headquarters: GIG HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  88. American College of Dentists

    EIN 272973318 · Headquarters: CLYDE HILL, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. American College of Emergency Physicians

    EIN 311189622 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. American College of Nurse-midwives

    EIN 272289077 · Headquarters: Fircrest, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. American College of Physicians Texas Chapter

    EIN 751823808 · Headquarters: GIG HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. American College of Physicians Washington Chapter

    EIN 510222670 · Headquarters: GIG HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. American Construction Inspectors Association

    EIN 300413639 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  94. American Construction Inspectors Association

    EIN 330518091 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  95. American Construction Inspectors Association

    EIN 330518105 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  96. American Construction Inspectors Association

    EIN 330518109 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  97. American Construction Inspectors Association

    EIN 330518111 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  98. American Construction Inspectors Association

    EIN 330518119 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  99. American Construction Inspectors Association

    EIN 330518127 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  100. American Contract Bridge League of Walla Walla

    EIN 300477102 · Headquarters: WALLA WALLA, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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