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. Scholar Chatter Society of Academic Publishers

    EIN 863995070 · Headquarters: Camano Island, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  2. Scholarship Foundation of Northshore

    EIN 911285947 · Headquarters: WOODINVILLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. School Information and Research Service Inc

    EIN 910690105 · Headquarters: TUMWATER, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. School Nurse Organization of Washington

    EIN 237394626 · Headquarters: Spanaway, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Schools First Coalition

    EIN 911693130 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. Schroth Family Charitable Trust

    EIN 930982989 · Headquarters: KENNEWICK, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Science for the Community

    EIN 821844253 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Scintillation

    EIN 943219414 · Headquarters: TACOMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  9. Scootenay Water Association Inc

    EIN 916055777 · Headquarters: Connell, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Score Officers Guild

    EIN 455071407 · Headquarters: Puyallup, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. Scottish American Military Society Mount Rainier Post 1889

    EIN 993875860 · Headquarters: Eatonville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Scouting for the Valley

    EIN 464345314 · Headquarters: Duvall, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  13. Scouts Bsa Troop 0015

    EIN 331472281 · Headquarters: Everett, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Scsi Trade Association

    EIN 943262603 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  15. Sdg Digital Foundation

    EIN 863540474 · Headquarters: Sammamish, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  16. Sduhubs Cultural and Family Servises

    EIN 823567245 · Headquarters: Kent, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Se Si Le

    EIN 853254085 · Headquarters: Bellingham, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Se Spokane County Historical Society and Museum

    EIN 237440832 · Headquarters: FAIRFIELD, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sea Mar Skilled Nursing Facility

    EIN 943126743 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Sea Resources

    EIN 916087253 · Headquarters: Chinook, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sea-chic Community

    EIN 842785011 · Headquarters: Bainbridge Island, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  22. Seabeach Volleyball

    EIN 332872879 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Seabeck Family Inc

    EIN 911238612 · Headquarters: Federal Way, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  24. Seadrunar Properties

    EIN 911051529 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Seafair Boat Club

    EIN 911241940 · Headquarters: Auburn, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Seahurst Pta Highline Council 9 5 142

    EIN 911225020 · Headquarters: Burien, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Sean Humphrey House

    EIN 911573874 · Headquarters: BELLINGHAM, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  28. Search and Rescue Ministries

    EIN 943145199 · Headquarters: Kennewick, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Search for One

    EIN 931088070 · Headquarters: Moses Lake, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Seashore Villa Association

    EIN 372148368 · Headquarters: OLYMPIA, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Seattle 15 Chapter

    EIN 911243362 · Headquarters: Arlington, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Seattle Adaptive Sports

    EIN 911427334 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. Seattle Alliance

    EIN 814625933 · Headquarters: SeaTac, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  34. Seattle Alumni Association of Phi Kappa Psi

    EIN 911153288 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Seattle Area Cup Tennis

    EIN 270913152 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Seattle Area Jmp Users Group

    EIN 272437177 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  37. Seattle Area Society of Hospital Pharmacists

    EIN 237028641 · Headquarters: Lake Forest Park, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. Seattle Artists

    EIN 943096733 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Seattle Association for Jews with Disabilites Supporting Foundation

    EIN 911645137 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Seattle Astronomical Society Inc

    EIN 916058371 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. Seattle Benevolent & Protective Order of Elks

    EIN 910142830 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Seattle Building and Construction Trades Council

    EIN 910402265 · Headquarters: Tukwila, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Seattle Building Enclosure Council

    EIN 204065751 · Headquarters: Mercer Island, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Seattle Cares

    EIN 862097282 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  45. Seattle Chapter Architectural Secretaries Association

    EIN 237065617 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Seattle Chapter Indoor Air Quality Association

    EIN 813018525 · Headquarters: Sammamish, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Seattle Chapter Socal Annuitants Association

    EIN 510184391 · Headquarters: Bonney Lake, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Seattle Cheese Festival

    EIN 203791811 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  49. Seattle Children's

    EIN 811472082 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Seattle Children's

    EIN 911156519 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Seattle Children's Guild Association

    EIN 911394056 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Seattle Children's Hospital

    EIN 462657292 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  53. Seattle Children's Hospital

    EIN 463756504 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  54. Seattle Children's Hospital

    EIN 832761932 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  55. Seattle Children's Hospital

    EIN 900231200 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  56. Seattle Children's Hospital

    EIN 911345918 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  57. Seattle Children's Hospital (Dba Aaron Matthew Sids Research Guild)

    EIN 822772540 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  58. Seattle Children's Hospital (Dba Adaline Coffman Guild)

    EIN 911345684 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  59. Seattle Children's Hospital (Dba Colton's Army Guild)

    EIN 811942155 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  60. Seattle Children's Hospital (Dba Daughter's Guild)

    EIN 208768920 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  61. Seattle Children's Hospital (Dba Desert Sun Guild)

    EIN 943102282 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  62. Seattle Children's Hospital (Dba Eastside Friends for Children's Guild)

    EIN 912151948 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  63. Seattle Children's Hospital (Dba Friends for Life Guild)

    EIN 205393321 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  64. Seattle Children's Hospital (Dba Friends Helping Friends Guild)

    EIN 830429373 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  65. Seattle Children's Hospital (Dba Friends of Costco Guild)

    EIN 943102280 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Seattle Children's Hospital (Dba I Can and I Will Guild)

    EIN 843877328 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  67. Seattle Children's Hospital (Dba Jean Thompson Guild)

    EIN 911345947 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  68. Seattle Children's Hospital (Dba Kc Howard Guild)

    EIN 943227921 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  69. Seattle Children's Hospital (Dba Kent Guild)

    EIN 911345617 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  70. Seattle Children's Hospital (Dba Kick Childhood Cancer Guild)

    EIN 832169124 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  71. Seattle Children's Hospital (Dba Luma Guild)

    EIN 753129867 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  72. Seattle Children's Hospital (Dba Marion Finley Guild)

    EIN 943207076 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  73. Seattle Children's Hospital (Dba Mercer Island Guild)

    EIN 911345579 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  74. Seattle Children's Hospital (Dba Miracle House Guild)

    EIN 912102818 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  75. Seattle Children's Hospital (Dba Mitochondrial Research Guild)

    EIN 270053014 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  76. Seattle Children's Hospital (Dba Project Grace Guild)

    EIN 261600917 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  77. Seattle Children's Hospital (Dba Smooch Guild)

    EIN 465368125 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  78. Seattle Children's Hospital (Dbafriends of Odessa Brown Children's Clinic Guild)

    EIN 821536330 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  79. Seattle Children's Theatre Association

    EIN 510172421 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Seattle Children's Theatre Foundation

    EIN 911725552 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Seattle Childrens Hospital

    EIN 260481964 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Seattle Childrens Hospital

    EIN 260720474 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  83. Seattle Childrens Hospital

    EIN 261474622 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  84. Seattle Childrens Hospital

    EIN 261561959 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  85. Seattle Childrens Hospital

    EIN 261958154 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Seattle Childrens Hospital

    EIN 262741697 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Seattle Childrens Hospital

    EIN 263047441 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Seattle Childrens Hospital

    EIN 263454951 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Seattle Childrens Hospital

    EIN 264119866 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Seattle Childrens Hospital

    EIN 272574717 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Seattle Childrens Hospital

    EIN 272916775 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Seattle Childrens Hospital

    EIN 273193047 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  93. Seattle Childrens Hospital

    EIN 311223196 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  94. Seattle Childrens Hospital

    EIN 311223197 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  95. Seattle Childrens Hospital

    EIN 311223519 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  96. Seattle Childrens Hospital

    EIN 311224223 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Seattle Childrens Hospital

    EIN 331101721 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Seattle Childrens Hospital

    EIN 331101722 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Seattle Childrens Hospital

    EIN 331101724 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  100. Seattle Childrens Hospital

    EIN 332957204 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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