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Cause Public affairsState California466 funders

Foundations that fund public affairs in California

466 private foundations based in California with a return in the last two years gave $132.9 million to public affairs organizations in 903 grants. The median grant was $20,000, and 89 of these foundations accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Ranked by giving to public affairs

Top 50

Grants in each foundation’s latest return to organizations whose IRS category is public affairs.

  1. Good Ventures FoundationPalo Alto, CA · tax year 2024 8 grants Preselected only $20,020,724 to public affairs
  2. The William & Flora Hewlett FoundationMenlo Park, CA · tax year 2024 64 grants Accepts applications $16,734,732 to public affairs
  3. Valhalla FoundationWoodside, CA · tax year 2024 1 grant Preselected only $10,000,000 to public affairs
  4. The James Irvine FoundationSan Francisco, CA · tax year 2024 20 grants Preselected only $9,357,500 to public affairs
  5. The California EndowmentLos Angeles, CA · tax year 2024 19 grants Preselected only $6,360,878 to public affairs
  6. Crankstart FoundationSan Jose, CA · tax year 2024 6 grants Preselected only $6,360,000 to public affairs
  7. The David and Lucile Packard FoundationLos Altos, CA · tax year 2024 24 grants Accepts applications $5,680,361 to public affairs
  8. Conrad N Hilton FoundationWestlake Village, CA · tax year 2024 12 grants Accepts applications $4,297,500 to public affairs
  9. The Heising-Simons FoundationLos Altos, CA · tax year 2024 18 grants Preselected only $3,810,005 to public affairs
  10. Waverley Street FoundationPalo Alto, CA · tax year 2024 4 grants Preselected only $3,675,000 to public affairs
  11. The Schmidt Family FoundationPalo Alto, CA · tax year 2024 14 grants Accepts applications $3,529,000 to public affairs
  12. Omidyar Network Fund IncRedwood City, CA · tax year 2024 13 grants Preselected only $2,090,544 to public affairs
  13. Sequoia Climate FoundationIrvine, CA · tax year 2023 2 grants Preselected only $2,000,000 to public affairs
  14. The Eric and Wendy Schmidt Fund for Strategic InnovationPalo Alto, CA · tax year 2024 6 grants Preselected only $1,843,000 to public affairs
  15. Evelyn and Walter Haas Jr FundSan Francisco, CA · tax year 2024 7 grants Preselected only $1,815,500 to public affairs
  16. The Skoll FoundationPalo Alto, CA · tax year 2024 6 grants Accepts applications $1,620,500 to public affairs
  17. Skyline FoundationSan Francisco, CA · tax year 2024 4 grants Preselected only $1,550,000 to public affairs
  18. Samueli FoundationCorona Del Mar, CA · tax year 2024 4 grants Preselected only $1,511,000 to public affairs
  19. The Grove FoundationLos Altos, CA · tax year 2024 4 grants Preselected only $1,500,000 to public affairs
  20. The Leonard & Sophie Davis FundSan Francisco, CA · tax year 2024 3 grants Preselected only $1,430,000 to public affairs
  21. The California Wellness FoundationLos Angeles, CA · tax year 2024 14 grants Accepts applications $1,383,400 to public affairs
  22. 128 Collective FoundationPalo Alto, CA · tax year 2024 8 grants Preselected only $1,357,500 to public affairs
  23. Kattom FoundationSan Francisco, CA · tax year 2024 1 grant Preselected only $1,313,384 to public affairs
  24. Gordon E and Betty I Moore FoundationPalo Alto, CA · tax year 2024 6 grants Preselected only $1,304,635 to public affairs
  25. The Hearthland FoundationLos Angeles, CA · tax year 2024 3 grants Preselected only $950,000 to public affairs
  26. The Sobrato Family FoundationMountain View, CA · tax year 2024 5 grants Accepts applications $727,000 to public affairs
  27. Kelson FoundationSan Francisco, CA · tax year 2024 3 grants Preselected only $605,000 to public affairs
  28. Jonathan Logan Family FoundationBerkeley, CA · tax year 2024 1 grant Preselected only $600,000 to public affairs
  29. Woka FoundationNewbury Park, CA · tax year 2024 2 grants Preselected only $550,000 to public affairs
  30. Walter and Elise Haas FundSan Francisco, CA · tax year 2024 2 grants Accepts applications $550,000 to public affairs
  31. CS FundPetaluma, CA · tax year 2024 7 grants Preselected only $510,000 to public affairs
  32. Humanity UnitedSan Francisco, CA · tax year 2024 9 grants Preselected only $509,000 to public affairs
  33. The Marisla FoundationLaguna Beach, CA · tax year 2024 2 grants Accepts applications $450,000 to public affairs
  34. Mae PhilanthropiesPalo Alto, CA · tax year 2024 1 grant Preselected only $400,000 to public affairs
  35. The Angell FoundationLos Angeles, CA · tax year 2024 2 grants Preselected only $350,000 to public affairs
  36. Clif Family FoundationSaint Helena, CA · tax year 2024 2 grants Accepts applications $350,000 to public affairs
  37. Weingart FoundationLos Angeles, CA · tax year 2024 8 grants Accepts applications $338,000 to public affairs
  38. The James and Rebecca Morgan Charitable FoundationLos Altos, CA · tax year 2024 3 grants Preselected only $330,200 to public affairs
  39. Price Philanthropies FoundationLa Jolla, CA · tax year 2024 3 grants Accepts applications $330,000 to public affairs
  40. The Draper FoundationSan Mateo, CA · tax year 2024 3 grants Accepts applications $310,000 to public affairs
  41. The IV FundFolsom, CA · tax year 2025 1 grant Preselected only $300,000 to public affairs
  42. Tarsadia FoundationNewport Beach, CA · tax year 2024 1 grant Preselected only $300,000 to public affairs
  43. The Koum Family FoundationPalo Alto, CA · tax year 2024 1 grant Preselected only $300,000 to public affairs
  44. The Karsh Family FoundationBeverly Hills, CA · tax year 2025 1 grant Preselected only $284,625 to public affairs
  45. Stephen M Silberstein FoundationBelvedere, CA · tax year 2024 3 grants Preselected only $275,000 to public affairs
  46. Carrie Estelle Doheny FoundationLos Angeles, CA · tax year 2024 1 grant Accepts applications $250,500 to public affairs
  47. Waking Up FoundationEncino, CA · tax year 2024 1 grant Preselected only $250,000 to public affairs
  48. General Service FoundationSan Ramon, CA · tax year 2025 2 grants Preselected only $250,000 to public affairs
  49. The Elizabeth R & William J Patterson FoundationRoss, CA · tax year 2024 1 grant Preselected only $250,000 to public affairs
  50. True North FoundationGrass Valley, CA · tax year 2024 1 grant Preselected only $250,000 to public affairs

Open to applications

25 foundations

The return gives an application contact and does not check the preselected-only box.

  1. The William & Flora Hewlett FoundationMenlo Park, CA · tax year 2024 64 grants Accepts applications $16,734,732 to public affairs
  2. The David and Lucile Packard FoundationLos Altos, CA · tax year 2024 24 grants Accepts applications $5,680,361 to public affairs
  3. Conrad N Hilton FoundationWestlake Village, CA · tax year 2024 12 grants Accepts applications $4,297,500 to public affairs
  4. The Schmidt Family FoundationPalo Alto, CA · tax year 2024 14 grants Accepts applications $3,529,000 to public affairs
  5. The Skoll FoundationPalo Alto, CA · tax year 2024 6 grants Accepts applications $1,620,500 to public affairs
  6. The California Wellness FoundationLos Angeles, CA · tax year 2024 14 grants Accepts applications $1,383,400 to public affairs
  7. The Sobrato Family FoundationMountain View, CA · tax year 2024 5 grants Accepts applications $727,000 to public affairs
  8. Walter and Elise Haas FundSan Francisco, CA · tax year 2024 2 grants Accepts applications $550,000 to public affairs
  9. The Marisla FoundationLaguna Beach, CA · tax year 2024 2 grants Accepts applications $450,000 to public affairs
  10. Clif Family FoundationSaint Helena, CA · tax year 2024 2 grants Accepts applications $350,000 to public affairs
  11. Weingart FoundationLos Angeles, CA · tax year 2024 8 grants Accepts applications $338,000 to public affairs
  12. Price Philanthropies FoundationLa Jolla, CA · tax year 2024 3 grants Accepts applications $330,000 to public affairs
  13. The Draper FoundationSan Mateo, CA · tax year 2024 3 grants Accepts applications $310,000 to public affairs
  14. Carrie Estelle Doheny FoundationLos Angeles, CA · tax year 2024 1 grant Accepts applications $250,500 to public affairs
  15. The McConnell FoundationRedding, CA · tax year 2024 1 grant Accepts applications $250,000 to public affairs
  16. Hanson Family FoundationLa Jolla, CA · tax year 2025 3 grants Accepts applications $222,000 to public affairs
  17. Edgar E & Elizabeth S Pankey FoundationNorth Tustin, CA · tax year 2025 5 grants Accepts applications $215,000 to public affairs
  18. Mitchell Kapor FoundationOakland, CA · tax year 2024 2 grants Accepts applications $180,000 to public affairs
  19. Archstone FoundationNewport Beach, CA · tax year 2024 1 grant Accepts applications $169,803 to public affairs
  20. Tsuha FoundationEscondido, CA · tax year 2024 1 grant Accepts applications $150,000 to public affairs
  21. The Righteous Persons FoundationLos Angeles, CA · tax year 2024 1 grant Accepts applications $150,000 to public affairs
  22. The Conrad Prebys FoundationSan Diego, CA · tax year 2024 2 grants Accepts applications $126,000 to public affairs
  23. The Ahmanson FoundationBeverly Hills, CA · tax year 2024 3 grants Accepts applications $118,000 to public affairs
  24. Fred Maytag Family FoundationSan Francisco, CA · tax year 2025 2 grants Accepts applications $110,000 to public affairs
  25. The Ralph M Parsons FoundationLos Angeles, CA · tax year 2024 3 grants Accepts applications $103,000 to public affairs