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 State Patrol Union Troopers Association

    EIN 911125594 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Washington State Penitentiary Veterans Committee

    EIN 270519534 · Headquarters: WALLA WALLA, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  3. Washington State Perfusion Society

    EIN 911719149 · Headquarters: Fox Island, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Washington State Pest Control Association

    EIN 950153072 · Headquarters: TUMWATER, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Washington State Pharmacy Association

    EIN 910462190 · Headquarters: Renton, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Washington State Pharmacy Foundation

    EIN 910996629 · Headquarters: Renton, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Washington State Physical Therapy Managers Association

    EIN 900795064 · Headquarters: Bellevue, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  8. Washington State Podiatric Medical Assn

    EIN 911033093 · Headquarters: PUYALLUP, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  9. Washington State Police Pistol Association

    EIN 911394632 · Headquarters: Kennewick, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Washington State Psychiatric Association

    EIN 910981726 · Headquarters: Mill Creek, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Washington State Psychological Association

    EIN 916060480 · Headquarters: GIG HARBOR, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Washington State Public Health Association

    EIN 916035626 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Washington State Public Interest Research Group

    EIN 911554604 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Washington State Quarter Horse Association

    EIN 311467592 · Headquarters: MCKENNA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Washington State Quilters-spokane Chapter

    EIN 911113012 · Headquarters: SPOKANE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Washington State Radiological Society

    EIN 910974529 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. Washington State Recycling Association

    EIN 911189177 · Headquarters: Gig Harbor, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Washington State Recycling Education Association

    EIN 934559556 · Headquarters: Gig Harbor, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Washington State Retired Deputy Sheriffs Police Officers Associati

    EIN 943050968 · Headquarters: Wauna, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Washington State Ridesharing Organization

    EIN 911421894 · Headquarters: Olympia, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Washington State Rifle & Pistol Association

    EIN 911232493 · Headquarters: SHORELINE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Washington State Scholastic Esports Association

    EIN 851837647 · Headquarters: MOUNT VERNON, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  23. Washington State School Retirees Association

    EIN 916057876 · Headquarters: LACEY, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Washington State School Retirees Foundation

    EIN 911329890 · Headquarters: LACEY, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Washington State Science & Engineering Fair

    EIN 510189275 · Headquarters: SILVERDALE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Washington State Scottish Terrier Club Inc

    EIN 916056483 · Headquarters: Woodinville, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Washington State Sheep Producers

    EIN 943070310 · Headquarters: Tenino, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Washington State Soccer Association

    EIN 911387841 · Headquarters: SNOHOMISH, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  29. Washington State Society for Healthcare Engineering

    EIN 911265369 · Headquarters: LEANDER, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  30. Washington State Society for Respiratory Therapy Inc

    EIN 237317847 · Headquarters: TACOMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Washington State Society of Allergy Asthma & Immunology

    EIN 943107823 · Headquarters: PORTLAND, OR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Washington State Society of Anesthesiologists

    EIN 916050189 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Washington State Society of Enrolled Agents

    EIN 911271331 · Headquarters: BELLEVUE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Washington State Society of Medical Assistants

    EIN 237181484 · Headquarters: LAKE FOREST PARK, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. Washington State Society of Oral & Maxillofacial Surgeons

    EIN 911164515 · Headquarters: REDMOND, WA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  36. Washington State Society of Pathologists

    EIN 911534266 · Headquarters: SCHAUMBURG, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Washington State Tactical Officers Association

    EIN 113819057 · Headquarters: Spokane, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Washington State Transit

    EIN 911152629 · Headquarters: OLYMPIA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Washington State Trappers Association

    EIN 911218631 · Headquarters: Cheney, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Washington State Trapshooters Assoc

    EIN 237069244 · Headquarters: GARFIELD, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Washington State Tree Fruit Association

    EIN 910465890 · Headquarters: YAKIMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Washington State Tumor Registrars Association

    EIN 272338552 · Headquarters: Bixby, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Washington State Univ Chapter - Society of Sigma Xi

    EIN 264498644 · Headquarters: Pullman, WA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  44. Washington State University

    EIN 237099718 · Headquarters: Union Gap, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. Washington State University

    EIN 300509816 · Headquarters: Bremerton, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  46. Washington State University

    EIN 300842071 · Headquarters: Union Gap, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Washington State University

    EIN 300986973 · Headquarters: Bremerton, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  48. Washington State University

    EIN 300986977 · Headquarters: Bremerton, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  49. Washington State University

    EIN 301203618 · Headquarters: Port Angeles, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  50. Washington State University

    EIN 320437273 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Washington State University

    EIN 320511114 · Headquarters: Ellensburg, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  52. Washington State University

    EIN 320591780 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  53. Washington State University

    EIN 320596730 · Headquarters: Goldendale, WA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  54. Washington State University

    EIN 320610361 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Washington State University

    EIN 331377441 · Headquarters: Port Angeles, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Washington State University

    EIN 331651028 · Headquarters: Okanogan, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Washington State University

    EIN 331783692 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Washington State University

    EIN 332302777 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Washington State University

    EIN 332463058 · Headquarters: Friday Harbor, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Washington State University

    EIN 332663176 · Headquarters: Pasco, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Washington State University

    EIN 333032201 · Headquarters: Chehalis, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Washington State University

    EIN 333102898 · Headquarters: Elma, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Washington State University

    EIN 334051960 · Headquarters: Coupeville, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Washington State University

    EIN 334249422 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Washington State University

    EIN 334251113 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Washington State University

    EIN 352389069 · Headquarters: Asotin, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Washington State University

    EIN 352527203 · Headquarters: Dayton, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  68. Washington State University

    EIN 352587947 · Headquarters: Bremerton, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  69. Washington State University

    EIN 352588632 · Headquarters: Colfax, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Washington State University

    EIN 352628405 · Headquarters: Olympia, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  71. Washington State University

    EIN 352628417 · Headquarters: Olympia, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  72. Washington State University

    EIN 352661349 · Headquarters: Pasco, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  73. Washington State University

    EIN 364648651 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Washington State University

    EIN 364787090 · Headquarters: Union Gap, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Washington State University

    EIN 364848594 · Headquarters: Moses Lake, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Washington State University

    EIN 364899213 · Headquarters: Olympia, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Washington State University

    EIN 364911969 · Headquarters: Tacoma, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  78. Washington State University

    EIN 364925868 · Headquarters: Goldendale, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. Washington State University

    EIN 365062310 · Headquarters: Friday Harbor, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Washington State University

    EIN 372146816 · Headquarters: Kelso, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Washington State University

    EIN 383927556 · Headquarters: Walla Walla, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  82. Washington State University

    EIN 384082117 · Headquarters: Olympia, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  83. Washington State University

    EIN 471195931 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Washington State University

    EIN 472354523 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Washington State University

    EIN 472794783 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Washington State University

    EIN 611774508 · Headquarters: Bremerton, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  87. Washington State University

    EIN 611817363 · Headquarters: Wenatchee, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  88. Washington State University

    EIN 611823850 · Headquarters: Colfax, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  89. Washington State University

    EIN 611888558 · Headquarters: Olympia, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  90. Washington State University

    EIN 611897770 · Headquarters: Renton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Washington State University

    EIN 811115914 · Headquarters: Vancouver, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  92. Washington State University

    EIN 814005937 · Headquarters: Colfax, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  93. Washington State University

    EIN 820624349 · Headquarters: Odessa, WA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  94. Washington State University

    EIN 820820217 · Headquarters: Bellingham, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  95. Washington State University

    EIN 823661916 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  96. Washington State University

    EIN 824865311 · Headquarters: Dayton, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Washington State University

    EIN 833351644 · Headquarters: Union Gap, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Washington State University

    EIN 833693474 · Headquarters: Union Gap, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Washington State University

    EIN 833943859 · Headquarters: Coupeville, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Washington State University

    EIN 834472013 · Headquarters: Kelso, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

First page and all pages