Nonprofits in California

Nonprofits in California. Browse 229,931 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 Nu Fraternity

    EIN 954319621 · Headquarters: Alhambra, CA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  2. Sigma Nu Fraternity-kappa Gamma Chapter Inc

    EIN 934340065 · Headquarters: Villa Park, CA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Sigma Nu Fraternity-kappa Gamma Housing Inc

    EIN 993686219 · Headquarters: Hermosa Beach, CA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sigma Nu Iota Kappa Chapter Housing Corporation

    EIN 237384355 · Headquarters: SAN JOSE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Sigma Nu Lambda Omicron

    EIN 465694036 · Headquarters: Irvine, CA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  6. Sigma Nu Zeta Iota

    EIN 992404048 · Headquarters: San Jose, CA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Sigma Nv Beta Psi of Sigma Nv Mason Brut Schg

    EIN 946101634 · Headquarters: Menlo Park, CA, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  8. Sigma Omega Nu Latina Interest Sorority Inc

    EIN 371432739 · Headquarters: LODI, CA, USA · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  9. Sigma Omega Phi Multi Cultural Sorority

    EIN 800553301 · Headquarters: Long Beach, CA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  10. Sigma Omicron Pi Sorority Inc

    EIN 942466733 · Headquarters: SAN FRANCISCO, CA, USA · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  11. Sigma Omicron Pi Sorority Student Chapters Inc

    EIN 943385860 · Headquarters: LA JOLLA, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 352430028 · Headquarters: Chula Vista, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  13. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 363755596 · Headquarters: Burbank, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364039962 · Headquarters: woodland hills, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 453345293 · Headquarters: Anaheim, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 800915129 · Headquarters: Sacramento, CA, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  17. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 942650956 · Headquarters: Los Altos Hills, CA, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  18. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 956149461 · Headquarters: Loma Linda, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  19. Sigma Phi Educational Foundation

    EIN 942764528 · Headquarters: Moraga, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sigma Phi Epsilon Ca Iota

    EIN 422752806 · Headquarters: CATHEDRAL CTY, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sigma Phi Epsilon California Chi Chapter Alumni Association

    EIN 203655358 · Headquarters: Atascardeo, CA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Phi Epsilon California Eta Chapter

    EIN 946138710 · Headquarters: Davis, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Sigma Phi Epsilon Fraternity California Alpha Chapter

    EIN 942965674 · Headquarters: Berkeley, CA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  24. Sigma Phi Epsilon Fraternity California Chi Chapter

    EIN 954566487 · Headquarters: Glendale, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  25. Sigma Phi Epsilon Fraternity California Psi Chapter

    EIN 911810577 · Headquarters: MALIBU, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Sigma Phi Epsilon Fraternity Inc

    EIN 201096816 · Headquarters: Cathedral City, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Sigma Phi Epsilon Fraternity Inc

    EIN 330560212 · Headquarters: San Bernardino, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Phi Epsilon Fraternity Inc

    EIN 770241787 · Headquarters: Sunnyvale, CA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  29. Sigma Phi Epsilon Fraternity Inc

    EIN 812888288 · Headquarters: Sacremento, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Sigma Phi Epsilon Fraternity Inc

    EIN 872307453 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Sigma Phi Epsilon Fraternity Inc

    EIN 911808284 · Headquarters: Fullerton, CA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  32. Sigma Phi Epsilon Fraternity Inc

    EIN 956149972 · Headquarters: Carlsbad, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Sigma Phi Epsilon Fraternity Inc California Beta Beta Chapter

    EIN 911937409 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Sigma Phi Gamma International Sorority Inc

    EIN 205053446 · Headquarters: Oroville, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  35. Sigma Phi Gamma International Sorority Inc

    EIN 330410741 · Headquarters: Hemet, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. Sigma Phi Gamma International Sorority Inc

    EIN 510171147 · Headquarters: Anaheim, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  37. Sigma Phi Gamma International Sorority Inc

    EIN 680379031 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  38. Sigma Phi Gamma International Sorority Inc

    EIN 946092622 · Headquarters: Oroville, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  39. Sigma Phi Gamma International Sorority Inc

    EIN 946104615 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  40. Sigma Phi Gamma International Sorority Inc

    EIN 946108328 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  41. Sigma Phi Gamma International Sorority Inc

    EIN 946117556 · Headquarters: Roseville, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. Sigma Phi Gamma International Sorority Inc

    EIN 953669048 · Headquarters: Claremont, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  43. Sigma Phi Gamma International Sorority Inc

    EIN 953839391 · Headquarters: Oceanside, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  44. Sigma Phi Gamma International Sorority Inc

    EIN 956076543 · Headquarters: San DIego, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  45. Sigma Phi Gamma International Sorority Inc

    EIN 956095680 · Headquarters: Northridge, CA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  46. Sigma Phi Gamma International Sorority Inc

    EIN 956095683 · Headquarters: Seal Beach, CA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  47. Sigma Phi Gamma International Sorority Inc

    EIN 956095717 · Headquarters: LONG BEACH, CA, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  48. Sigma Phi Gamma International Sorority Inc

    EIN 956113659 · Headquarters: Anaheim, CA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Sigma Phi Gamma International Sorority Inc

    EIN 956131240 · Headquarters: Anaheim, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  50. Sigma Phi Omega Sorority Charitable Foundation

    EIN 271455469 · Headquarters: SAN DIEGO, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sigma Phi Omega Sorority Inc

    EIN 843528891 · Headquarters: San Diego, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. Sigma Pi Alpha Sorority Inc

    EIN 342016577 · Headquarters: Richmond, CA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  53. Sigma Pi Alpha Sorority Inc Alum Association

    EIN 922062817 · Headquarters: WILMINGTON, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Sigma Pi Fraternity - Upsilon Chapter

    EIN 951786209 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. SIGMA PI FRATERNITY Alpha-Omicron Chapter

    EIN 208374657 · Headquarters: GOLETA, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  56. Sigma Pi Fraternity Educational Fund

    EIN 330490547 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  57. Sigma Pi Fraternity Eta Delta Chapter

    EIN 943139124 · Headquarters: San Luis Obispo, CA, USA · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  58. Sigma Pi Fraternity International Inc

    EIN 311207365 · Headquarters: San Diego, CA, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  59. Sigma Pi Fraternity International Inc

    EIN 311207390 · Headquarters: Sacramento, CA, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  60. Sigma Pi Fraternity International Inc

    EIN 383733802 · Headquarters: Santa Cruz, CA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  61. Sigma Pi Fraternity International Inc

    EIN 474983478 · Headquarters: San Clemente, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sigma Pi Fraternity International Inc

    EIN 912089483 · Headquarters: IRVINE, CA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  63. Sigma Pi Fraternity International Inc

    EIN 943139125 · Headquarters: San Jose, CA, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  64. Sigma Pi Fraternity Zeta Eta Chaper

    EIN 311207375 · Headquarters: Santa Clara, CA, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  65. Sigma Pi Iota Chapter

    EIN 941166470 · Headquarters: MORAGA, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Sigma Psi Zeta

    EIN 474028644 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  67. Sigma Sigma Phi

    EIN 263308012 · Headquarters: Pomona, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Sigma Sigma Phi

    EIN 311079537 · Headquarters: Pomona, CA, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  69. Sigma Sigma Phi

    EIN 510668745 · Headquarters: Vallejo, CA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Sigma Sigma Sigma Inc

    EIN 273807974 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Sigma Sigma Sigma Inc

    EIN 273891786 · Headquarters: Murrieta, CA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  72. Sigma Sigma Sigma Inc

    EIN 273956185 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  73. Sigma Sigma Sigma Inc

    EIN 464060232 · Headquarters: Vallejo, CA, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  74. Sigma Sigma Sigma Inc

    EIN 825044256 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Sigma Sigma Sigma Inc

    EIN 953245878 · Headquarters: Downey, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Sigma Sigma Sigma Inc Sacramento Alumni Assoc of Sigma Si

    EIN 320478061 · Headquarters: PLEASANT GROVE, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  77. Sigma So Cal Odyssey

    EIN 834324688 · Headquarters: Loma Linda, CA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Sigma Theta Mu

    EIN 474645056 · Headquarters: SAN DIEGO, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Sigma Theta Psi Inc

    EIN 203990615 · Headquarters: Sacramento, CA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Sigma Theta Tau Alpha Eta Chapter School of Nursing Ucsf

    EIN 946129571 · Headquarters: SAN FRANCISCO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Sigma Theta Tau Inc

    EIN 237111288 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Sigma Theta Tau Inc

    EIN 237377861 · Headquarters: Loma Linda, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Sigma Theta Tau Inc

    EIN 237414498 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Sigma Theta Tau Inc

    EIN 311042695 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  85. Sigma Theta Tau Inc

    EIN 311042707 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Sigma Theta Tau Inc

    EIN 311242949 · Headquarters: Azusa, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Sigma Theta Tau Inc

    EIN 311309927 · Headquarters: Sebastopol, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  88. Sigma Theta Tau Inc

    EIN 311309962 · Headquarters: REEDLEY, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Sigma Theta Tau Inc

    EIN 311379920 · Headquarters: Concord, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Sigma Theta Tau Inc

    EIN 351928437 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Sigma Theta Tau Inc

    EIN 351928458 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Sigma Theta Tau Inc

    EIN 363479088 · Headquarters: Long Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Sigma Theta Tau International

    EIN 352749691 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Sigma Theta Tau International

    EIN 364847141 · Headquarters: Costa Mesa, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Sigma Theta Tau International

    EIN 900757109 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Sigma Theta Tau International -Xi Theta Chapter - 342

    EIN 311433577 · Headquarters: UPLAND, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Sigma Theta Tau International Honor Society of Nursing Pi Alpha

    EIN 900485782 · Headquarters: Pomona, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Sigma Theta Tau International Inc

    EIN 311242973 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Sigma Theta Tau International Inc

    EIN 311361616 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Sigma Theta Tau International Inc

    EIN 510232370 · Headquarters: Ventura, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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