Nonprofits in Washington

Nonprofits in Washington. Browse 51,977 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. Sigma Alpha Epsilon Fraternity

    EIN 910410720 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Sigma Alpha Epsilon Fraternity

    EIN 922062273 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  3. Sigma Alpha Mu Fraternity

    EIN 473586256 · Headquarters: Pullman, WA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  4. Sigma Alumni of Alpha Gamma Rho

    EIN 916034794 · Headquarters: PULLMAN, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Sigma Chi Building Association

    EIN 916055568 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  6. Sigma Chi Fraternity - Beta Upsilon Chapter

    EIN 271668947 · Headquarters: PULLMAN, WA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Sigma Chi Fraternity Gamma Epsilon Chap Whitman College

    EIN 910564940 · Headquarters: WALLA WALLA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Sigma Chi Fraternity Upsilon Upsilon Chapter

    EIN 910410730 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  9. Sigma Delta Epsilon Graduate Women in Science Inc

    EIN 900275753 · Headquarters: Pullman, WA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  10. Sigma Gamma Rho Sorority Inc

    EIN 311327792 · Headquarters: Puyallup, WA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  11. Sigma Gamma Rho Sorority Inc

    EIN 311360151 · Headquarters: TUKWILA, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Sigma Gamma Rho Sorority Inc - Zeta Phi Sigma

    EIN 820742999 · Headquarters: Covington, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Sigma Gamma Tau National Honor Society in Aerospace Engineering

    EIN 911789956 · Headquarters: Seattle, WA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  14. Sigma Iota Building Assoc of Kappa Delta Sorority

    EIN 916055576 · Headquarters: SEATTLE, WA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Sigma Kappa Sorority

    EIN 912084243 · Headquarters: Puyallup, WA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  16. Sigma Nu Fraternity

    EIN 910574696 · Headquarters: Pullman, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Sigma Nu Fraternity

    EIN 911503686 · Headquarters: CHENEY, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 363952411 · Headquarters: Shoreline, WA, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  19. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 800531737 · Headquarters: Yakima, WA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  20. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911238263 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895689 · Headquarters: Lakewood, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911940779 · Headquarters: Vancouver, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Phi Epsilon Building Corp of Seattle Washington

    EIN 916058391 · Headquarters: KENT, WA, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990

  24. Sigma Phi Epsilon Fraternity Inc

    EIN 910410770 · Headquarters: Tukwila, WA, USA · Education · Latest available filing year: 2012 · Primary form: IRS Form 990

  25. Sigma Phi Epsilon Washington Alpha

    EIN 770661670 · Headquarters: PULLMAN, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Sigma Phi Gamma International Sorority Inc

    EIN 510174612 · Headquarters: Issaquah, WA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  27. Sigma Phi Gamma International Sorority Inc

    EIN 910838551 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  28. Sigma Phi Gamma International Sorority Inc

    EIN 911150668 · Headquarters: Lynnwood, WA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  29. Sigma Phi Gamma International Sorority Inc

    EIN 930986253 · Headquarters: Battle Ground, WA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  30. Sigma Sat

    EIN 993531196 · Headquarters: Bellevue, WA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  31. Sigma Sigma Phi

    EIN 452823762 · Headquarters: Yakima, WA, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  32. Sigma Sigma Sigma Inc

    EIN 462068106 · Headquarters: Mountlake Terrace, WA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. Sigma Tau Association C/o James W McCurdy

    EIN 916033189 · Headquarters: Shoreline, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Sigma Tau Educational Foundation

    EIN 911569892 · Headquarters: WOODINVILLE, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Sigma Tau Gamma Fraternity Zeta Iota Chapter

    EIN 811967449 · Headquarters: Pullman, WA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  36. Sigma Tau of Kappa Delta Housing Associa

    EIN 916055585 · Headquarters: Veradale, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Sigma Theta Tau Inc

    EIN 621092317 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Sigma Theta Tau Inc

    EIN 916068088 · Headquarters: Vashon Island, WA, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  39. Sigma Theta Tau International Inc

    EIN 916062245 · Headquarters: Poulsbo, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Sign Fracture Care International

    EIN 911952283 · Headquarters: RICHLAND, WA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Sign of the Orz

    EIN 383682139 · Headquarters: Bellevue, WA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. Sikh Center Everett

    EIN 371914496 · Headquarters: EVERETT, WA, USA · Religion Related · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  43. Sikh Centre of Seattle

    EIN 262757552 · Headquarters: BOTHELL, WA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Sikh Initiative for Mental Health Awareness

    EIN 333820442 · Headquarters: KENT, WA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sikh Learning Center

    EIN 992756259 · Headquarters: Redmond, WA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Sikh Of America Corp

    EIN 850684323 · Headquarters: Maple Valley, WA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Sikh Society in Care of Humanity

    EIN 810804951 · Headquarters: Renton, WA, US · Religion Related · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  48. Sikh Student Association at the University of Washington

    EIN 843329204 · Headquarters: SeaTac, WA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Sikko-mando Relief Association

    EIN 822279291 · Headquarters: Seattle, WA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Silang Outreach

    EIN 413386924 · Headquarters: Puyallup, WA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Silas Aquatics Booster Club

    EIN 993972959 · Headquarters: Tacoma, WA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Silas Dugout Club

    EIN 821269287 · Headquarters: Tacoma, WA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Silas Education

    EIN 833002288 · Headquarters: PASCO, WA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Silas Music Boosters

    EIN 352376629 · Headquarters: TACOMA, WA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Silas Wrestling Booster Club

    EIN 871399767 · Headquarters: Tacoma, WA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Silence Hurts Foundation

    EIN 824564235 · Headquarters: Port Orchard, WA, US · Crime & Legal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  57. Silent Environment Educational Kamp

    EIN 910961381 · Headquarters: BELLINGHAM, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Silent Majority Foundation

    EIN 872214704 · Headquarters: PASCO, WA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Silent Smiles

    EIN 823796438 · Headquarters: Sammamish, WA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Silentbridge

    EIN 834386641 · Headquarters: Vancouver, WA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Silhouette Dancers

    EIN 911735974 · Headquarters: Yakima, WA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  62. Silliman University Alumni Association Pacific Northwest Chap

    EIN 811740613 · Headquarters: Vancouver, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  63. Silvana Community Association

    EIN 454808018 · Headquarters: Silvana, WA, US · Community Improvement & Capacity Building · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  64. Silvana Volunteer Firefighter Association

    EIN 912133768 · Headquarters: Silvana, WA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Silver Anniversary Symposium Fund

    EIN 911238403 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  66. Silver Beach Elementary PTO

    EIN 911115252 · Headquarters: BELLINGHAM, WA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Silver Buckle Youth Equestrian Center

    EIN 911226973 · Headquarters: Brush Prairie, WA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Silver Cloud Hotels Foundation

    EIN 462925131 · Headquarters: MEDINA, WA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  69. Silver Cloud Special Cat Services

    EIN 462091375 · Headquarters: Endicott, WA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Silver Dollar Club

    EIN 872828728 · Headquarters: Snohomish, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Silver Eagles Association Inc

    EIN 237086269 · Headquarters: Clinton, WA, US · Animal Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  72. Silver Firs Pta Everett Council 7 3 44

    EIN 911414923 · Headquarters: Everett, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Silver Flight Ensembles

    EIN 300684921 · Headquarters: Issaquah, WA, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  74. Silver Football Club

    EIN 813231713 · Headquarters: SILVERDALE, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Silver Lake Action Committee

    EIN 911413587 · Headquarters: Everett, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Silver Lake Elementary PTA

    EIN 911225523 · Headquarters: EVERETT, WA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Silver Lake Elementary Pta Federal Way Council 9453

    EIN 911456173 · Headquarters: FEDERAL WAY, WA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Silver Lake Football Association

    EIN 912143907 · Headquarters: Everett, WA, USA · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  79. Silver Lake Senior Housing Association

    EIN 943041311 · Headquarters: EVERETT, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Silver Lake Youth Soccer Club

    EIN 911297944 · Headquarters: MILL CREEK, WA, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  81. Silver Lining Giving

    EIN 871511767 · Headquarters: Gig Harbor, WA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Silver Lining Giving Inc

    EIN 273181946 · Headquarters: Gig Harbor, WA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Silver Ridge Elementary PTA 1322

    EIN 911484171 · Headquarters: Silverdale, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Silver Sierra Foundation

    EIN 884277622 · Headquarters: Waitsburg, WA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Silver Sisters Haven Ecovillage

    EIN 474872045 · Headquarters: Auburn, WA, US · Housing & Shelter · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  86. Silver Springs Estates Community Association

    EIN 510148028 · Headquarters: Stanwood, WA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Silver Spur Club

    EIN 916055379 · Headquarters: Silverdale, WA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. Silver Spurs Youth Folk Dancers

    EIN 916056401 · Headquarters: Spokane, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Silver Star Art & Culture Center

    EIN 200739767 · Headquarters: Shoreline, WA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Silver Star Pta

    EIN 911708785 · Headquarters: VANCOUVER, WA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Silver Star Search & Rescue

    EIN 237381444 · Headquarters: Washougal, WA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Silver Stars Square Dance Club

    EIN 911192058 · Headquarters: Brush Prairie, WA, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  93. Silver View Senior Housing Association

    EIN 911664336 · Headquarters: EVERETT, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Silvercrown Mountain Outdoor School

    EIN 264080104 · Headquarters: Northport, WA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Silverdale Branch 310 Fleet Reserve Association

    EIN 911254133 · Headquarters: Silverdale, WA, US · Public & Societal Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  96. Silverdale Chamber of Commerce

    EIN 910911216 · Headquarters: SILVERDALE, WA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  97. Silverdale Elementary Ptsa

    EIN 910313394 · Headquarters: Silverdale, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Silverdale Girls Fastpitch Association

    EIN 711002393 · Headquarters: Silverdale, WA, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  99. Silverdale Pee Wee Adult Association

    EIN 910974383 · Headquarters: SILVERDALE, WA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Silverdale Rotary Club Foundation

    EIN 911682373 · Headquarters: SILVERDALE, WA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

First page and all pages