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. San Francisco Bay Area Chamber Choir

    EIN 943058939 · Headquarters: CASTRO VALLEY, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Save Our Schools Castro Valley

    EIN 264525350 · Headquarters: CASTRO VALLEY, CA, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  3. School Personnel Commissioners Association of Northern California

    EIN 920638580 · Headquarters: Castro Valley, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Second Saturday

    EIN 851632644 · Headquarters: Castro Valley, CA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Secret Place Ministries for Women and Children

    EIN 113725075 · Headquarters: Castro Valley, CA, US · Human Services · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  6. Sikh Sevak Society

    EIN 710950693 · Headquarters: CASTRO VALLEY, CA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Soroptimist International of the Americas Inc

    EIN 942934564 · Headquarters: CASTRO VALLEY, CA, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Southbay Youth Maritime Foundation

    EIN 823063013 · Headquarters: CASTRO VALLEY, CA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Sportshopes

    EIN 270420819 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  10. Squad Club 375

    EIN 651220265 · Headquarters: Castro Valley, CA, USA · Crime & Legal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  11. Sri Sai Temple Inc

    EIN 460797629 · Headquarters: Castro Valley, CA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. St Gregorios Relief Fund

    EIN 311630582 · Headquarters: CASTRO VALLEY, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  13. St John Kronstadt Home for Russian-americans

    EIN 237279960 · Headquarters: CASTRO VALLEY, CA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Stanton Parent Association

    EIN 943106846 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Storys Not Over Yet

    EIN 842193233 · Headquarters: CASTRO VALLEY, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Straycap Limited

    EIN 992555701 · Headquarters: CASTRO VALLEY, CA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  17. Students Association for Education

    EIN 823295024 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Sunshine Africa Education Inc

    EIN 823618034 · Headquarters: Castro Valley, CA, US · Social Science · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Support American Veterans Everywhere Inc

    EIN 271043624 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  20. Sweet Briar Camp

    EIN 946219257 · Headquarters: CASTRO VALLEY, CA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  21. Taipei Language Institute

    EIN 710867395 · Headquarters: CASTRO VALLEY, CA, USA · Social Science · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  22. Teach the Kids

    EIN 260060409 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  23. The Await and Find Project

    EIN 943255800 · Headquarters: CASTRO VALLEY, CA, USA · Social Science · Latest available filing year: 2014 · Primary form: IRS Form 990

  24. The Collective Human Spirit Inc

    EIN 831709137 · Headquarters: CASTRO VALLEY, CA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  25. The Hermans

    EIN 870879691 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. The Institute for Advanced Interdisciplinary Caribbean

    EIN 861164310 · Headquarters: Castro Valley, CA, US · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  27. The James and Barbara Knuppe Family Foundation

    EIN 261614488 · Headquarters: CASTRO VALLEY, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  28. The Mbk Foundation

    EIN 943163451 · Headquarters: CASTRO VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  29. The Sequoians Inc

    EIN 946104460 · Headquarters: CASTRO VALLEY, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. The United States Pony Clubs Inc

    EIN 271217065 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  31. Theatre Q

    EIN 342016303 · Headquarters: CASTRO VALLEY, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  32. Thousand Mather Foundation

    EIN 854175314 · Headquarters: Castro Valley, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  33. Toastmasters International

    EIN 900116462 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  34. Toastmasters International

    EIN 900740569 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Toastmasters International

    EIN 946136105 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Tops Club Inc

    EIN 010916683 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Tops Club Inc

    EIN 475259963 · Headquarters: Castro Valley, CA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Underwater Recovery Unit Ii

    EIN 943323662 · Headquarters: Castro Valley, CA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  39. Undivided Women War & the Battle for Peace

    EIN 844599715 · Headquarters: Castro Valley, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. United Methodist Church of Castro Valley

    EIN 946050062 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  41. United States Pony Clubs Inc

    EIN 208070001 · Headquarters: castro valley, CA, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  42. United States-china Exchange Council

    EIN 200323966 · Headquarters: Castro Valley, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Vannoy Parent Club

    EIN 943104988 · Headquarters: Castro Valley, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Vazball Inc

    EIN 020776301 · Headquarters: CASTRO VALLEY, CA, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  45. Veterans of Foreign Wars of the United States Auxiliary

    EIN 474237088 · Headquarters: Castro Valley, CA, US · Public & Societal Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  46. Voa Foundation Inc

    EIN 883334029 · Headquarters: CASTRO VALLEY, CA, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  47. West Alameda County Conference

    EIN 943271378 · Headquarters: Castro Valley, CA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Who Rescues Who

    EIN 811788707 · Headquarters: Castro Valley, CA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Womens National Book Association Inc

    EIN 510214678 · Headquarters: Castro Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Won Buddhism Meditation Temple of Berkeley

    EIN 208478369 · Headquarters: Castro Valley, CA, USA · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990

  51. Won Buddhism San Francisco Temple

    EIN 943149072 · Headquarters: Castro Valley, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Woodmen of the World Assured Life Association

    EIN 941259247 · Headquarters: Castro Valley, CA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  53. Worship Encounter

    EIN 824933345 · Headquarters: Castro Valley, CA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Yellow Home Sanctuary Inc

    EIN 394732510 · Headquarters: CASTRO VALLEY, CA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  55. Zeta Omega Fraternity - Hayward

    EIN 464814988 · Headquarters: Castro Valley, CA, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

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