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. Seattle Childrens Hospital

    EIN 943102294 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  2. Seattle Childrens Hospital

    EIN 943122951 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Seattle Childrens Hospital

    EIN 943122953 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  4. Seattle Childrens Hospital

    EIN 943164263 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Seattle Childrens Hospital

    EIN 943207082 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Seattle Childrens Hospital

    EIN 943227899 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  7. Seattle Childrens Hospital

    EIN 943227904 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Seattle Childrens Hospital

    EIN 994053471 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Seattle Childrens Hospital

    EIN 994967110 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Seattle Childrens Hospital Guild

    EIN 883532144 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Seattle Childrens Hospital Guild

    EIN 883710340 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. Seattle Childrens Hospital Guild

    EIN 884024713 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Seattle Childrens Hospital Guild

    EIN 921783059 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Seattle Childrens Hospital Guild

    EIN 922181645 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  15. Seattle Childrens Hospital Guild

    EIN 923031556 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Seattle Chinese Athletic Association

    EIN 910915627 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  17. Seattle Chinese Garden Society

    EIN 911443855 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  18. Seattle Chinese Public Radio

    EIN 273095689 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  19. Seattle Chongqing Sister City

    EIN 911190115 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Seattle City Frontline Freedom Fighters

    EIN 881567669 · Headquarters: Brier, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Seattle Civic Dance Theatre

    EIN 911288035 · Headquarters: BURIEN, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Seattle Classic Guitar Society

    EIN 237282893 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Seattle Co-arts

    EIN 911177278 · Headquarters: EDMONDS, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Seattle Coalition for Family & Relationship Equity

    EIN 333130639 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Seattle Committee in Solidarity with the People of El Salvador

    EIN 911415146 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Seattle Community College Parent Cooperative Preschool

    EIN 910947175 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  27. Seattle Community College Parent Cooperative Preschool

    EIN 911003988 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Seattle Community College Parent Cooperative Preschool

    EIN 911082258 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. SEATTLE COMMUNITY COLLEGE PARENT COOPERATIVE PRESCHOOL Admiral Coop Preschool

    EIN 237421226 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. SEATTLE COMMUNITY COLLEGE PARENT COOPERATIVE PRESCHOOL Alki Cooperative Preschool

    EIN 910969079 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. SEATTLE COMMUNITY COLLEGE PARENT COOPERATIVE PRESCHOOL Lincoln Park Coop Preschool

    EIN 911346771 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. SEATTLE COMMUNITY COLLEGE PARENT COOPERATIVE PRESCHOOL White Center Coop Preschool

    EIN 911078195 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Seattle Community College Parent Dba Capitol Hill Coop Preschool

    EIN 910824350 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  34. Seattle Contract Bridge League

    EIN 911520794 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Seattle Counselors Association

    EIN 911369254 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  36. Seattle Credit Union

    EIN 910176215 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Seattle Deaf Bowlers

    EIN 911110975 · Headquarters: Lake Stevens, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Seattle Eastside Eaa Chapter 1440 Incorporated

    EIN 204461062 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  39. Seattle Economics Council

    EIN 911404447 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Seattle Education Association

    EIN 910684298 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Seattle Education Foundation

    EIN 910584099 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  42. Seattle Emerald City Tnba Senate

    EIN 472058227 · Headquarters: Des Moines, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Seattle Families of Multiples

    EIN 943023706 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Seattle Festival Orchestra

    EIN 911095403 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Seattle Fire Buff Society Disaster Fund

    EIN 237394627 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  46. Seattle Fire Buff Society Inc

    EIN 910787350 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  47. Seattle Fire Chiefs Association Local 2898

    EIN 911266292 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Seattle Fire Department Relief Association

    EIN 910402646 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Seattle Fisherman's Memorial Fund

    EIN 911298132 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Seattle for Everyone

    EIN 811419960 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Seattle Full Gospel Church

    EIN 911322009 · Headquarters: FEDERAL WAY, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Seattle Gilbert & Sullivan Crown Hill Center G & S Suite

    EIN 910742249 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Seattle Glider Council Inc

    EIN 916058373 · Headquarters: Bellevue, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  54. Seattle Golf Club

    EIN 910402810 · Headquarters: SHORELINE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Seattle Gynecologic Society

    EIN 510137506 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Seattle Health Information Management Association

    EIN 010959906 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Seattle Heritage Emergency Response Network

    EIN 475313830 · Headquarters: Tukwila, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Seattle Hill Elemenry Pto

    EIN 911421194 · Headquarters: Everett, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  59. Seattle Hiroshima Club

    EIN 911163548 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Seattle Institute for Sex Therapy Education and Research

    EIN 510183777 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Seattle Is Creative

    EIN 851220608 · Headquarters: renton, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  62. Seattle Junior Tamburitzans

    EIN 911502267 · Headquarters: WENATCHEE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Seattle Kings Womens Lacrosse

    EIN 464609888 · Headquarters: Newcastle, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  64. Seattle Kobe Sister City Association

    EIN 237034425 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Seattle Laser Fleet

    EIN 463535475 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  66. Seattle Letter Carriers Building Association Inc

    EIN 916057767 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  67. Seattle Metro Softball Umpires Association

    EIN 911100263 · Headquarters: KIRKLAND, WA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  68. Seattle Milk Fund Inc

    EIN 910619698 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  69. Seattle Nantes Sister City Association

    EIN 911107540 · Headquarters: BRIER, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Seattle Outboard Association

    EIN 916056464 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Seattle Peace Chorus

    EIN 911380540 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. Seattle Peoples Party

    EIN 831704299 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. Seattle Perugia Sister City Assoc

    EIN 911489524 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Seattle Play Therapy Institute

    EIN 833456909 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Seattle Police Athletic Association

    EIN 910495082 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Seattle Police Management Assoc

    EIN 911301111 · Headquarters: TACOMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Seattle Police Motorcycle Drill Team Association

    EIN 911193803 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Seattle Police Officers' Guild

    EIN 910603202 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Seattle Police Relief Association

    EIN 910403365 · Headquarters: Tukwila, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Seattle Pro Musica

    EIN 510175286 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  81. Seattle Prof Engineering Employees Assn Dba Soc of Prof Eng Empl in Aerospace

    EIN 910583387 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Seattle Psychoanalytic Society and Institute

    EIN 911307952 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Seattle Public Theater

    EIN 911398805 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Seattle Recorder Society

    EIN 911043714 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Seattle Regional Gem and Mineral Show Committee Inc

    EIN 910748235 · Headquarters: Kenmore, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Seattle Rifle & Pistol Association

    EIN 916054877 · Headquarters: Snohomish, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  87. Seattle School of Aikido

    EIN 911274972 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Seattle School Retirees Association

    EIN 910670618 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Seattle Sephardic Brotherhood

    EIN 916032761 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. Seattle Shanghai Association

    EIN 832087726 · Headquarters: Woodinville, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  91. Seattle Short Term Rental Alliance

    EIN 812974947 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  92. Seattle Shrm

    EIN 911637691 · Headquarters: Gig Harbor, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Seattle Sno-king Invitational Racing Pigeon Club

    EIN 910977459 · Headquarters: KIRKLAND, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Seattle Storytellers Guild

    EIN 911307528 · Headquarters: Auburn, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Seattle Student Improvement Club

    EIN 812919337 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  96. Seattle Surgical Society

    EIN 911128500 · Headquarters: LYNNWOOD, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Seattle Suzhou Fellows Association

    EIN 465447680 · Headquarters: Issaquah, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  98. Seattle Swedish Community Scholarships

    EIN 911322613 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Seattle Swish Basketball Network

    EIN 800600242 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  100. Seattle Swiss Society

    EIN 916050325 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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