Unknown & Unclassified nonprofits in California

Unknown & Unclassified nonprofits in California. Browse 48,218 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. American Association of Retired Persons

    EIN 521966184 · Headquarters: Santa Clara, CA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  2. American Association of Suicidology

    EIN 952930701 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. American Association of University Women Inc

    EIN 770049628 · Headquarters: Oakdale, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Association of University Women Inc

    EIN 942438997 · Headquarters: Oroville, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  5. American Association of University Women Inc

    EIN 943000279 · Headquarters: San Ramon, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. American Association of University Women Inc

    EIN 956046935 · Headquarters: PASADENA, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. American Association of Zoo Keepers

    EIN 260090283 · Headquarters: Palm Desert, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. American Association of Zoo Keepers

    EIN 260681131 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Association of Zoo Keepers

    EIN 454289063 · Headquarters: Eureka, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Association of Zoo Keepers

    EIN 461812725 · Headquarters: Fresno, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Association of Zoo Keepers

    EIN 471407123 · Headquarters: Moonpark, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. American Association of Zoo Keepers

    EIN 475592600 · Headquarters: Oakland, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Association of Zoo Keepers

    EIN 813622065 · Headquarters: Santa Rosa, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  14. American Association of Zoo Keepers Orange County Chapter

    EIN 330952625 · Headquarters: Santa Ana, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  15. American Associations of Dental Maxillofacial Radiographic Technic

    EIN 237013051 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. American Associaton of Zoo Keepers

    EIN 931038602 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. American Audiology Board of Intraoperative Monitoring Inc

    EIN 452648066 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. American Auto Racing Writers and Broadcasters Inc

    EIN 943039784 · Headquarters: BURBANK, CA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  19. American Aviation Historical Society

    EIN 952624789 · Headquarters: RIVERSIDE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. American Begonia Society

    EIN 330016161 · Headquarters: Corona, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. American Begonia Society

    EIN 911932697 · Headquarters: Huntington Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. American Begonia Society

    EIN 911932706 · Headquarters: Manhattan Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  23. American Begonia Society

    EIN 942441329 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. American Begonia Society

    EIN 946101874 · Headquarters: ALAMEDA, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. American Begonia Society

    EIN 953150555 · Headquarters: Santa Barbara, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Begonia Society

    EIN 953158765 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. American Bloodhound Club

    EIN 942654091 · Headquarters: CORONA, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Board of Podiatric Medicine

    EIN 943186276 · Headquarters: Hermosa Beach, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. American Board of Podiatric Surgery Inc

    EIN 521021963 · Headquarters: San Francisco, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. American Board of Spine Surgery Inc

    EIN 330751630 · Headquarters: RIVERSIDE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. American Brittany Club Inc

    EIN 611850700 · Headquarters: Hesperia, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  32. American Brittany Club Inc

    EIN 952761343 · Headquarters: Simi Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. American Brittany Club Inc

    EIN 953087952 · Headquarters: san diego, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. American Brotherhood Aimed Towards Education

    EIN 770124225 · Headquarters: Acton, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. American Bryological and Lichenological

    EIN 436055433 · Headquarters: Berkeley, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. American Bugatti Club

    EIN 510657929 · Headquarters: Sherman Oaks, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  37. American Business Women Association Verdugo Glen Chapter

    EIN 800323415 · Headquarters: BURBANK, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  38. American Business Womens Assn

    EIN 956129699 · Headquarters: Redlands, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  39. American Business Womens Associatio N

    EIN 770263797 · Headquarters: FRESNO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. American Business Womens Association

    EIN 330251613 · Headquarters: Huntington Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. American Business Womens Association

    EIN 711029875 · Headquarters: Paramount, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  42. American Canyon Baseball Club

    EIN 463614439 · Headquarters: American Canyon, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. American Canyon Chamber of Commerce

    EIN 680322395 · Headquarters: AMERICAN CANYON, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. American Canyon Lions Club

    EIN 942780287 · Headquarters: American Canyon, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  45. American Canyon Little League

    EIN 222501629 · Headquarters: AMERICAN CANYON, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. American Canyon Moms Club

    EIN 462190889 · Headquarters: American Canyon, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  47. American Catholic Union

    EIN 680058379 · Headquarters: Richmond, CA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  48. American Cetacean Society

    EIN 330543721 · Headquarters: San Pedro, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  49. American Cetacean Society

    EIN 330543724 · Headquarters: San Pedro, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  50. American Cetacean Society

    EIN 330543734 · Headquarters: San Pedro, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  51. American Cetacean Society

    EIN 330543735 · Headquarters: San Pedro, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  52. American Cetacean Society

    EIN 943356032 · Headquarters: San Pedro, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  53. American Cetacean Society Groups

    EIN 330000196 · Headquarters: Pacific Grove, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. American Charity

    EIN 844671162 · Headquarters: los angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. American Chemical Society

    EIN 237066379 · Headquarters: Ridgecrest, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Chemical Society

    EIN 526054151 · Headquarters: San Ramon, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Chemical Society

    EIN 931227209 · Headquarters: Ventura, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Chemical Society

    EIN 942883957 · Headquarters: Fresno, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Chemical Society

    EIN 954748180 · Headquarters: Long Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Chemical Society

    EIN 956195919 · Headquarters: San Bernardino, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Chemical Society

    EIN 956195920 · Headquarters: Placentia, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. American Chemical Society Division of Medicinal Chemistry

    EIN 136211920 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. American Chemical Society Silicon Valley Section

    EIN 946077831 · Headquarters: Palo Alto, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. American Chinese Martial Arts Federation

    EIN 770149907 · Headquarters: Hacienda Heights, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. American Chongqing General Chamber of Commerce

    EIN 922241746 · Headquarters: Arcadia, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. American Christian Academy

    EIN 941716655 · Headquarters: Anderson, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. American Christian Enterprises Inc

    EIN 943002872 · Headquarters: Oakland, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. American Cinema Editors Inc

    EIN 952111604 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. American Civil Liberties Union Foundation of Northern California Inc

    EIN 940279770 · Headquarters: SAN FRANCISCO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. American Civil Liberties Union of Northern California

    EIN 942151925 · Headquarters: SAN FRANCISCO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. American Civil Liberties Union of San Diego & Imperial Counties Inc

    EIN 330325795 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. American Civil Liberties Union of Southern California

    EIN 950490250 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. American Clan Gregor Society Inc

    EIN 237025272 · Headquarters: SAN CLEMENTE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. American Clan Gregor Society Inc Charity and Education Fund

    EIN 237050781 · Headquarters: SAN CLEMENTE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. American College of Cellular Medicine

    EIN 460924354 · Headquarters: CATHEDRAL CITY, CA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  76. American College of Dentists

    EIN 956068059 · Headquarters: San Marino, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American College of Dentists Nor Cal

    EIN 942951926 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. American College of Emergency Physicians State Chapter of California Inc

    EIN 952872180 · Headquarters: Sacramento, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  79. American College of Medical Scribe Specialists a New Jersey Non-profit Corporation

    EIN 274003392 · Headquarters: Orange, CA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  80. American College of Nurse Midwives Region Vi Chapter4

    EIN 943202402 · Headquarters: Berkeley, CA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  81. American College of Osteopathic Family Physicians of Ca

    EIN 943115928 · Headquarters: RANCHO CUCAMONGA, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  82. American College of Physicians

    EIN 364714725 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. American College Of Physicians

    EIN 954753597 · Headquarters: Newhall, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. American College of Physicians Services California Chapters

    EIN 941208770 · Headquarters: Newhall, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. American College of Podiatric Medicine

    EIN 396096360 · Headquarters: Roseville, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. American College of Trial Lawyers

    EIN 951778923 · Headquarters: NEWPORT BEACH, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. American College of Veterinary Dermatology

    EIN 371122882 · Headquarters: NEVADA CITY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. American College of Veterinary Nutrition

    EIN 382821062 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  89. American Concrete Institute of San Diego

    EIN 953701250 · Headquarters: SANTEE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. American Concrete Institute Southern California Chapter

    EIN 956111839 · Headquarters: SAN DIMAS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. American Contract Bridge District 22

    EIN 237208516 · Headquarters: SAN JUAN CAPISTRANO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  92. American Contract Bridge League Unit 503

    EIN 371565599 · Headquarters: Mountain View, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  93. American Corporation of the Arts

    EIN 953326697 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. American Council of Engineering Companies

    EIN 942750140 · Headquarters: Santa Rosa, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  95. American Council of Engineering Companies of Ca Riverside-san Bernardino

    EIN 956068551 · Headquarters: RIVERSIDE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. American Council of Engineering Companies of California

    EIN 941331745 · Headquarters: Sacramento, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. American Council of Engineering Companies of California-san Diego Chap

    EIN 956095328 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. American Council of Engineering Companies Orange County Chapter

    EIN 237439885 · Headquarters: FOUNTAIN VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. American Council on Exercise

    EIN 330123550 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. American Cowboy Team Roping Association

    EIN 770343477 · Headquarters: LINCOLN, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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