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Grantmaking foundations in Clayton, MO

110 grantmaking foundations in Clayton, Missouri, ranked by recent giving reported to the IRS (about $150M combined).

Top foundations by giving

  1. Enterprise Holdings Foundation
    Clayton, MO
    $100M (2025)
  2. Michael and Noemi Neidorff Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $9.2M (2024)
  3. Mysun Charitable Foundation
    Clayton, MO
    $8.6M (2025)
  4. Ross Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $4.5M (2024)
  5. St Louis Girl Scout Trust Fund
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $3.3M (2025)
  6. Cox Foundation Inc
    Clayton, MO
    $1.9M (2025)
  7. J Michael Char Bev Farm Fdn Tr Fbo June Michael Charitable Trust
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $1.4M (2025)
  8. Frank and Laura Smock Foundation
    Clayton, MO
    $1.2M (2025)
  9. Graybar Foundation
    Clayton, MO
    $1.2M (2025)
  10. Richard W and Phyllis B Duesenberg Foundation
    Clayton, MO
    $1.2M (2024)
  11. Norman J Stupp Foundation
    Clayton, MO
    $1.2M (2025)
  12. Paz Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $1M (2024)
  13. Mildred Herbert & Julian Simon Foundation
    Clayton, MO
    $970K (2025)
  14. Maor Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $960K (2024)
  15. Preston M Green Charitable Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $870K (2025)
  16. Apex Oil Company Charitable Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $840K (2025)
  17. Michelle P and Steven L Trulaske Sr Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $670K (2025)
  18. David and Dorothy Kemper Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $590K (2025)
  19. Velma a Neiman Charitable Foundation
    Clayton, MO
    $520K (2024)
  20. Rubin Family Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $440K (2024)
  21. Louis L & Julia Dorothy Coover Charitable Foundation
    Clayton, MO
    $440K (2025)
  22. Waldemar J Klasing Private Foundation
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $410K (2025)
  23. Adeline and Edna L Burger Scholarship Foundation
    Clayton, MO
    $410K (2026)
  24. Mae K Steele Trust
    Clayton, MO
    $380K (2025)
  25. Mizis Fam Educational Tr
    Clayton, MO · Philanthropy, Voluntarism and Grantmaking Foundations
    $370K (2025)

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