Nonprofits in Castro Valley, California

Nonprofits in Castro Valley, California. Browse 355 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. 3 M Track Club

    EIN 942949370 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. 360Serve

    EIN 453210739 · Headquarters: Castro Valley, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. A Greenvision Foundation

    EIN 460766835 · Headquarters: Castro Valley, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Abraham Haile Foundation Nfp

    EIN 850718005 · Headquarters: CASTRO VALLEY, CA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Agua Linda Swimming Pool Corporation

    EIN 941538070 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. Ai for Mankind Corp

    EIN 841750651 · Headquarters: Castro Valley, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Alacosta Moose Legion No 70

    EIN 237132263 · Headquarters: CASTRO VALLEY, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Alameda County Sherrifs Air Squadron

    EIN 946107783 · Headquarters: Castro Valley, CA, US · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Alive

    EIN 320613855 · Headquarters: CASTRO VALLEY, CA, USA · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  10. All for the Family Legal Clinic Inc

    EIN 455216044 · Headquarters: CASTRO VALLEY, CA, USA · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Alpha Delta Kappa Sorority Inc

    EIN 237157289 · Headquarters: CASTRO VALLEY, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Amateur Athletic Union of the Usinc Team Panthers

    EIN 872650881 · Headquarters: CASTRO VALLEY, CA, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. Americal College of Dentists Nor Cal

    EIN 994414408 · Headquarters: Castro Valley, CA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. American Association of University Women Inc

    EIN 946121468 · Headquarters: Castro Valley, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  15. 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

  16. American Unity Foundation

    EIN 852502209 · Headquarters: Castro Valley, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Amrita Media Foundation

    EIN 203427833 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  18. Angus & Friends Inc

    EIN 883830582 · Headquarters: Castro Valley, CA, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Aqua Tutus Diving Inc

    EIN 942921725 · Headquarters: Castro Valley, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Arcadians of Oakland - Skopi

    EIN 262045416 · Headquarters: CASTRO VALLEY, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Art Bridge of Cultures

    EIN 990896179 · Headquarters: Castro Valley, CA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Art Inc

    EIN 942952182 · Headquarters: Castro Valley, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Ascension of the Lord Romanian

    EIN 331209202 · Headquarters: Castro Valley, CA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. Asian Business Alliance

    EIN 010939939 · Headquarters: Castro Valley, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  25. Asphalt Sealcoat Manufacturers Associat Asma-USA

    EIN 680285593 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Assn of Retired Safeway Employees

    EIN 383865016 · Headquarters: Castro Valley, CA, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  27. Badjao Bridge

    EIN 453041897 · Headquarters: CASTRO VALLEY, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Baisaa Inc

    EIN 843228308 · Headquarters: Castro Valley, CA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Ball Bobcat Pta

    EIN 364667312 · Headquarters: CASTRO VALLEY, CA, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  30. Bay Area Affordable Housing Service Center

    EIN 993048247 · Headquarters: CASTRO VALLEY, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Bay Area Bankruptcy Forum

    EIN 943146589 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Bay Area Eritreans for Democratic Change

    EIN 474735831 · Headquarters: Castro Valley, CA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Bay Area Freedom Collective

    EIN 881984369 · Headquarters: Castro Valley, CA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Bay Area Mustang Association

    EIN 943062134 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Bay Area Public Pool Operators Association

    EIN 270167577 · Headquarters: Castro Valley, CA, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  36. Baywood Court

    EIN 942940176 · Headquarters: Castro Valley, CA, US · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Benevolence Fund for Christian Science Nursing Care

    EIN 454812137 · Headquarters: CASTRO VALLEY, CA, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Beyond the Ring

    EIN 934396350 · Headquarters: Castro Valley, CA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Bhan S Pannu Charitable Foundation

    EIN 863820067 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. Breathing Room Inc

    EIN 030506910 · Headquarters: CASTRO VALLEY, CA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2011 · Primary form: IRS Form 990-PF

  41. C3 Coles Family Foundation

    EIN 453153098 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  42. Ca Wiser Ball League

    EIN 461545289 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  43. California Dental Hygienists Association

    EIN 946102647 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. California Houndsmen for Conservation

    EIN 942814898 · Headquarters: Castro Valley, CA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. California Marine Affairs and Navigation Conference

    EIN 237297154 · Headquarters: CASTRO VALLEY, CA, USA · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990

  46. California Pacific Conference

    EIN 680404128 · Headquarters: Castro Valley, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. California Recovery Divers

    EIN 921974681 · Headquarters: Castro Valley, CA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  48. California Rescue Dog Association

    EIN 942476578 · Headquarters: Castro Valley, CA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. California Retired Teachers Association

    EIN 510187053 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Canyon Middle School Booster Club

    EIN 943089517 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  51. Care Beyond Our Walls

    EIN 994660214 · Headquarters: CASTRO VALLEY, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. CareSprint

    EIN 933493679 · Headquarters: CASTRO VALLEY, CA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  53. Castro Valley Area Squad Club

    EIN 821835651 · Headquarters: Castro Valley, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  54. Castro Valley Arts Foundation

    EIN 810654619 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Castro Valley Athletic Boosters

    EIN 260416727 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Castro Valley Chamber of Commerce Inc

    EIN 941321044 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Castro Valley City

    EIN 932945664 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. Castro Valley Community Action

    EIN 800824449 · Headquarters: Castro Valley, CA, US · Mental Health & Crisis Intervention · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. Castro Valley Crocodiles Swim Team

    EIN 800933107 · Headquarters: CASTRO VALLEY, CA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Castro Valley Dramatic Arts Academy

    EIN 300645979 · Headquarters: Castro Valley, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  61. Castro Valley Educational Foundation

    EIN 942797523 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Castro Valley Girls Softball League

    EIN 942745176 · Headquarters: Castro Valley, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Castro Valley Historical Society

    EIN 510138199 · Headquarters: Castro Valley, CA, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  64. Castro Valley Independent Baseball

    EIN 943231949 · Headquarters: CASTRO VALLEY, CA, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990

  65. Castro Valley Little League

    EIN 942786823 · Headquarters: CASTRO VALLEY, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Castro Valley Masonic Temple Association

    EIN 946090873 · Headquarters: Castro Valley, CA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Castro Valley Matters Inc

    EIN 474273515 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. Castro Valley Orchestra Association

    EIN 464153305 · Headquarters: Castro Valley, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Castro Valley Outreach Inc

    EIN 943382914 · Headquarters: Castro Valley, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Castro Valley Parent Nursery School

    EIN 237400265 · Headquarters: Castro Valley, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. Castro Valley Post No 649 the American Legion Department Of

    EIN 946101583 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Castro Valley Schools Administrator Association

    EIN 873055479 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Castro Valley Science

    EIN 822723845 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Castro Valley Ski Club

    EIN 943079261 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  75. Castro Valley Soccer Club

    EIN 942923294 · Headquarters: Castro Valley, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  76. Castro Valley Sports Foundation

    EIN 542101025 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Castro Valley Veterans Memorial Library Foundation

    EIN 832183872 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Castro Valley Womens Club

    EIN 946133690 · Headquarters: Castro Valley, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Casualty Actuaries of the Bay Area

    EIN 992708327 · Headquarters: Castro Valley, CA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Center for Jewish Life

    EIN 465083384 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Center for the Dance Theatre

    EIN 204366310 · Headquarters: Castro Valley, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Chabot College Dental Health Fund Committee Inc

    EIN 954501968 · Headquarters: Castro Valley, CA, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  83. Chabot School Parents Club

    EIN 680026377 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Chabot Swim Club

    EIN 941533554 · Headquarters: Castro Valley, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Chanticleers

    EIN 942412328 · Headquarters: CASTRO VALLEY, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Chinese American Chemical Society

    EIN 943055776 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Christian Education Advance

    EIN 942905709 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  88. Christian Harmony - Armonia Cristiana Inc

    EIN 205065857 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  89. Christian Pilot Association San Jose Wing

    EIN 237320836 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  90. Christians in Photojournalism Inc

    EIN 330127372 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Cityserve International Incorporated

    EIN 991162439 · Headquarters: Castro Valley, CA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. Collegeworks Inc

    EIN 943291981 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  93. Columbiettes Incorporated Supreme Council

    EIN 333522662 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Community Aid for Individuals with Intellectual Disabilities

    EIN 942156307 · Headquarters: CASTRO VALLEY, CA, USA · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990

  95. Community Healthcare Resource Netwo

    EIN 061711906 · Headquarters: CASTRO VALLEY, CA, US · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  96. Community Roots

    EIN 273632833 · Headquarters: Castro Valley, CA, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  97. Con Mi Gente Foundation Dba Roots of Citizenship

    EIN 260521246 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  98. Cooperative Contigent of Concerned World Citizens Inc

    EIN 412856119 · Headquarters: Castro Valley, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Creekside Boosters Club

    EIN 364712898 · Headquarters: Castro Valley, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. Creekside Parent Teacher Club

    EIN 911837052 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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