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. Society for Marketing Professional Services San Diego Chapter

    EIN 330089223 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Society for Neuroscience

    EIN 330756869 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Society for Personology

    EIN 462743209 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Society for Preservation & Appreciation of Antique Motorfire

    EIN 237433995 · Headquarters: Palo Alto, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  5. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 043678668 · Headquarters: LA JOLLA, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 311135487 · Headquarters: Oceanside, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 330179736 · Headquarters: Fontana, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  8. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 330494659 · Headquarters: Hemet, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 680284492 · Headquarters: Roseville, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 931218344 · Headquarters: Newbury Park, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 941718991 · Headquarters: Lodi, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 942417975 · Headquarters: Burlingame, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 942891502 · Headquarters: Woodlake, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 942891720 · Headquarters: Gold River, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946104402 · Headquarters: San Anselmo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946104440 · Headquarters: Fresno, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946104441 · Headquarters: Los Gatos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946104442 · Headquarters: Napa, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946126374 · Headquarters: Redwood City, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946126375 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  21. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 946129049 · Headquarters: Forestville, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 952572836 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 953269500 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 954079519 · Headquarters: SANTA CLARITA, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956047716 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956096583 · Headquarters: San Francisco, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956096617 · Headquarters: Van Nuys, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956134607 · Headquarters: Alhambra, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956135739 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  30. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 956195066 · Headquarters: REDONDO BEACH, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 237292972 · Headquarters: Walnut Creek, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 237453321 · Headquarters: IrVINE, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 330510918 · Headquarters: Orange, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  34. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 461234956 · Headquarters: Fallbrook, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 770298189 · Headquarters: Santa Cruz, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 943096683 · Headquarters: ELK GROVE, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 946107883 · Headquarters: McKinleyville, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 952572089 · Headquarters: Newbury Park, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 953468294 · Headquarters: Palm Desert, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 956093745 · Headquarters: Glendale, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  41. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 956118754 · Headquarters: Fullerton, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 956196396 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. Society for Preservation and Encourmt D0004 District Far Western

    EIN 956085839 · Headquarters: Mission Viejo, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Society for Social Work Adminstrators in Health Care

    EIN 943186291 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Society for Technical Communication

    EIN 521531340 · Headquarters: Oakland, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. Society for Technical Communication

    EIN 521564130 · Headquarters: Goleta, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  47. Society for Technical Communication

    EIN 956146393 · Headquarters: Long Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Society for Technical Communication

    EIN 956146395 · Headquarters: Irvine, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  49. Society for Technical Communication

    EIN 956146396 · Headquarters: El Cajon, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Society for the Advancement of Material & Process Engineers

    EIN 954216562 · Headquarters: DIAMOND BAR, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Society for the Advancement of Material and Process Engineering

    EIN 956153442 · Headquarters: DIAMOND BAR, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Society for the Preservation of Drum Barracks

    EIN 956130123 · Headquarters: WILMINGTON, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Society for the Protection and Care of Wildlife

    EIN 954160756 · Headquarters: Hesperia, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Society of Allied Weight Engineers Inc

    EIN 956095725 · Headquarters: Long Beach, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Society of American Gastrointestinal and Endoscopic Surgeons Inc

    EIN 521219359 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  56. Society of American Magicians Hall of Fame & Magic Museum Inc

    EIN 953565464 · Headquarters: LOS ANGELES, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Society of American Military Engineers

    EIN 521269041 · Headquarters: Santa Ana, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Society of American Military Engineers

    EIN 956096022 · Headquarters: Port Hueneme, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Society of American Military Engineers Orange County Post

    EIN 330320813 · Headquarters: Yorba Linda, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Society of American Military Engineers Sacramento Postc/o Usacesacto Division

    EIN 946107627 · Headquarters: SACRAMENTO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Society of American Military Engineers San Diego Post

    EIN 956096023 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Society of Auditor Appraisers

    EIN 941681198 · Headquarters: Garden Grove, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Society of Broadcast Engineers Chapter 47

    EIN 161726352 · Headquarters: Burbank, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Society of California Archivists Inc

    EIN 680321831 · Headquarters: BURBANK, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. Society of California Care Operators

    EIN 823991070 · Headquarters: Sherman Oaks, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. Society of Camera Operators

    EIN 953617325 · Headquarters: Burbank, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Society of Care Operators

    EIN 473992251 · Headquarters: GLENDALE, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  68. Society of Certified Appraisers

    EIN 237321690 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  69. Society of Chinese Performing Arts Sf

    EIN 510192368 · Headquarters: Hillsborough, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Society of Composers & Lyricists

    EIN 954326986 · Headquarters: BEVERLY HILLS, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. Society of Cosmetic Chemists California Chapter Inc

    EIN 222720622 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. Society of Critical Care Medicine

    EIN 815103673 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Society of Environmental Toxicology and Chemistry Southern California

    EIN 423033520 · Headquarters: Ventura, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Society of Experimental Test Pilots

    EIN 952013453 · Headquarters: LANCASTER, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  75. Society of Experimental Test Pilots Scholarship Foundation

    EIN 952479396 · Headquarters: LANCASTER, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  76. Society of Financial Service Professionals

    EIN 946127548 · Headquarters: Clayton, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. Society of Financial Service Professionals-los Angeles Pasadena

    EIN 956097743 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  78. Society of Financial Service Professionals-san Fernando Valy Cp

    EIN 237104693 · Headquarters: Hermosa Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  79. Society of Forensic Engineers & Scientists

    EIN 770438151 · Headquarters: Tracy, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Society of Government Meeting Professionals Inc

    EIN 680223024 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Society of Government Service Urologists

    EIN 741873489 · Headquarters: Santa Ana, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Society of Hearts Delight

    EIN 332519464 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Society of Illustrators of Los Angeles

    EIN 953846752 · Headquarters: Van Nuys, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Society of Incentive & Travel Executives Northern California Chapter

    EIN 943268506 · Headquarters: TEMECULA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Society of Industrial & Office Realtors

    EIN 330296728 · Headquarters: FOOTHILL RANCH, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Society of Iranian Political Prisoners

    EIN 464636783 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  87. Society of Italian Americans

    EIN 770296610 · Headquarters: San Martin, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Society of Jesus USA West Province Irrevocable Apostolic Fund Charitable Tr

    EIN 466767334 · Headquarters: LOS GATOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  89. Society of Jesus USA West Province Irrevocable Formation Fund Charitable Tr

    EIN 466766293 · Headquarters: LOS GATOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  90. Society of Jesus USA West Province Irrevocable Foundations Fund Charitable

    EIN 466763653 · Headquarters: LOS GATOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  91. Society of Manufacturing Engineers

    EIN 237150120 · Headquarters: Riverside, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Society of Manufacturing Engineers

    EIN 310950360 · Headquarters: Fullerton, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Society of Manufacturing Engineers

    EIN 946104537 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Society of Manufacturing Engineers

    EIN 956196148 · Headquarters: Carlsbad, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Society of Mayflower Descendants in the State of California

    EIN 471268977 · Headquarters: NEWBURY PARK, CA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  96. Society of Myles Standish Descendants Inc

    EIN 814407737 · Headquarters: Montague, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Society of Novus Spiritus

    EIN 770256925 · Headquarters: CAMPBELL, CA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  98. Society of Petrophysicists and Well Log Analysts Inc

    EIN 464446577 · Headquarters: Hayward, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  99. Society of Petrophysicists and Well Log Analysts Inc

    EIN 824775325 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Society of Phi Zeta

    EIN 205479307 · Headquarters: Pomona, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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