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. Ophir Parent Teacher Club

    EIN 831866300 · Headquarters: Newcastle, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  2. OPOA Retention Benefit Plan

    EIN 943038681 · Headquarters: Oakland, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Opossum Society of California Inc

    EIN 330310580 · Headquarters: YUCAIPA, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Oppenheimer Family Foundation C/o H Oppenheimer

    EIN 366054015 · Headquarters: OJAI, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  5. Opportunity for All Coalition

    EIN 844965287 · Headquarters: OAKLAND, CA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  6. Opportunity Oasis

    EIN 923644990 · Headquarters: SAN JOSE, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Opposing IKEs Misleading Referendum Sponsored By

    EIN 921867659 · Headquarters: Sacramento, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  8. Optimist Club of Burbank

    EIN 954572694 · Headquarters: SUN VALLEY, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  9. Optimist Club of Country Club

    EIN 946175355 · Headquarters: Roseville, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Optimist Club of Nipomo

    EIN 394483095 · Headquarters: PASO ROBLES, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Optimist Club of Redlands

    EIN 956102964 · Headquarters: REDLANDS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Optimist Club of Sacramento Inc

    EIN 274344012 · Headquarters: SACRAMENTO, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. Optimist Club of South Lake Tahoe

    EIN 946107715 · Headquarters: SOUTH LAKE TAHOE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Optimist Club of Suburban Buena Park

    EIN 953546681 · Headquarters: Cerritos, CA, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  15. Optimist Club of Valley Center

    EIN 237273014 · Headquarters: Valley Center, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Optimist Club of Vista

    EIN 956095801 · Headquarters: VISTA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Optimist Club Pacific Southwest Dist

    EIN 952103771 · Headquarters: Valencia, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  18. Optimist Int 20489 OC of Truckee CA

    EIN 237176314 · Headquarters: Truckee, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Optimist International

    EIN 237008887 · Headquarters: Pomona, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  20. Optimist International

    EIN 237014276 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Optimist International

    EIN 237017371 · Headquarters: Pasadena, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Optimist International

    EIN 237032863 · Headquarters: Newark, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Optimist International

    EIN 237064822 · Headquarters: LA MESA, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  24. Optimist International

    EIN 237083413 · Headquarters: Encino, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  25. Optimist International

    EIN 237095059 · Headquarters: CORONADO, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. Optimist International

    EIN 237152532 · Headquarters: Goleta, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Optimist International

    EIN 330185029 · Headquarters: South Gate, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  28. Optimist International

    EIN 330224493 · Headquarters: IMPERI, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Optimist International

    EIN 330395558 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  30. Optimist International

    EIN 330628707 · Headquarters: santee, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Optimist International

    EIN 363989611 · Headquarters: santee, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Optimist International

    EIN 472296122 · Headquarters: Marina Del Rey, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Optimist International

    EIN 475534009 · Headquarters: CHULA VISTA, CA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  34. Optimist International

    EIN 475549557 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  35. Optimist International

    EIN 510173799 · Headquarters: Montebello, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Optimist International

    EIN 680289069 · Headquarters: Elk Grove, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Optimist International

    EIN 680331389 · Headquarters: San Andreas, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Optimist International

    EIN 680400307 · Headquarters: Oroville, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Optimist International

    EIN 680482306 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  40. Optimist International

    EIN 721551150 · Headquarters: Montebello, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. Optimist International

    EIN 770292016 · Headquarters: PASO ROBLES, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Optimist International

    EIN 770308238 · Headquarters: REDWOOD CITY, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Optimist International

    EIN 811177616 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  44. Optimist International

    EIN 823619053 · Headquarters: Santee, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  45. Optimist International

    EIN 825398984 · Headquarters: Bonita, CA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  46. Optimist International

    EIN 841787842 · Headquarters: Malibu, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  47. Optimist International

    EIN 883636456 · Headquarters: ELK GROVE, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Optimist International

    EIN 900183833 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Optimist International

    EIN 900334440 · Headquarters: OCOTILLO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Optimist International

    EIN 912073621 · Headquarters: Atascadero, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Optimist International

    EIN 941647916 · Headquarters: sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  52. Optimist International

    EIN 942567622 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Optimist International

    EIN 946081007 · Headquarters: Redwood City, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Optimist International

    EIN 946102916 · Headquarters: San Carlos, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Optimist International

    EIN 946107714 · Headquarters: SAN JOSE, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  56. Optimist International

    EIN 946121480 · Headquarters: SACRAMENTO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Optimist International

    EIN 952078252 · Headquarters: RIVERSIDE, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. Optimist International

    EIN 952545568 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  59. Optimist International

    EIN 953102597 · Headquarters: Bonita, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Optimist International

    EIN 953432408 · Headquarters: CERRITOS, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Optimist International

    EIN 953621782 · Headquarters: Solana Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Optimist International

    EIN 953782113 · Headquarters: WEST HILLS, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Optimist International

    EIN 954119564 · Headquarters: CANYON COUNTRY, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. Optimist International

    EIN 954255516 · Headquarters: Moorpark, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  65. Optimist International

    EIN 954479539 · Headquarters: RESEDA, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  66. Optimist International

    EIN 956093617 · Headquarters: Van Nuys, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Optimist International

    EIN 956096551 · Headquarters: Santa Paula, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Optimist International

    EIN 956130891 · Headquarters: Gardena, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Optimist International

    EIN 956130961 · Headquarters: Carlsbad, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Optimist International

    EIN 956143965 · Headquarters: OJAI, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Optimist International

    EIN 956146196 · Headquarters: Malibu, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Optimist International

    EIN 956209608 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Optimist International

    EIN 956210804 · Headquarters: APPLE VALLEY, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Optimist International

    EIN 956220882 · Headquarters: PACIFIC PALISADES, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Optimist International 14850 Optimist Club Ventura East Ca

    EIN 911988388 · Headquarters: VENTURA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Optimist International The Optimist Club of Lakeside

    EIN 956066409 · Headquarters: Lakeside, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Option House

    EIN 953760212 · Headquarters: SAN BERNARDINO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Options Beyond the Box

    EIN 061783787 · Headquarters: Anaheim, CA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  79. Options Family of Services

    EIN 770109107 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Options for Learning

    EIN 953602641 · Headquarters: West Covina, CA, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Options Wellness Resource Program Inc

    EIN 274265367 · Headquarters: Oakland, CA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  82. Opus 90

    EIN 943128312 · Headquarters: Sunnyvale, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  83. Opus Archives and Research Center Inc

    EIN 770225564 · Headquarters: Santa Barbara, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Opus Caritatis Inc

    EIN 201021326 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. OQuinn Ministries

    EIN 473811247 · Headquarters: Lakeside, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  86. Oranco Bowmen Inc

    EIN 330581969 · Headquarters: Chino, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Orange Art Association

    EIN 237165686 · Headquarters: Aliso Viejo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Orange Belt Mineralogical Society

    EIN 956093621 · Headquarters: San Bernardino, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. Orange Chamber of Commerce

    EIN 951068320 · Headquarters: ORANGE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Orange City Firefighters

    EIN 237453883 · Headquarters: ORANGE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Orange City Lodge

    EIN 270008516 · Headquarters: LAGUNA HILLS, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Orange Coast Council No 162 Allied Masonic Degrees

    EIN 330671740 · Headquarters: Fullerton, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  93. Orange Coast Gakuen Inc

    EIN 330460813 · Headquarters: SANTA ANA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Orange Coast League

    EIN 471323896 · Headquarters: Costa Mesa, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  95. Orange Coast Rhodesian Ridgeback Club

    EIN 330030343 · Headquarters: Laguna Hills, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Orange County 49Ers Inc

    EIN 953854091 · Headquarters: Buena Park, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Orange County Academic Decathlon Association

    EIN 237011585 · Headquarters: COSTA MESA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Orange County Academy of Sciences and Arts

    EIN 475316171 · Headquarters: LAGUNA NIGUEL, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Orange County Adult Achievement Center Dba My Day Counts

    EIN 951863666 · Headquarters: ANAHEIM, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Orange County Alarm Association

    EIN 953778601 · Headquarters: Mission Viejo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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