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Grantmaking foundations in Smithtown, NY

9 grantmaking foundations in Smithtown, New York, ranked by recent giving reported to the IRS (about $3.4M combined).

Top foundations by giving

  1. The John H & Catherine V Hahn Charitab
    Smithtown, NY
    $1.8M (2024)
  2. Hildenbrand Family Foundation
    Smithtown, NY · Philanthropy, Voluntarism and Grantmaking Foundations
    $640K (2025)
  3. Banyan Tree Roots Foundation
    Smithtown, NY · Philanthropy, Voluntarism and Grantmaking Foundations
    $320K (2025)
  4. Scope Education Services
    Smithtown, NY · Community Improvement and Capacity Building
    $210K (2025)
  5. Robert M Harris & Marilyn a Harris Charitable Foundation Tr Agmt
    Smithtown, NY · Philanthropy, Voluntarism and Grantmaking Foundations
    $150K (2025)
  6. Sibley Family Foundation Inc
    Smithtown, NY · Philanthropy, Voluntarism and Grantmaking Foundations
    $140K (2025)
  7. St Catherine of Siena Medical Center
    Smithtown, NY · Public and Societal Benefit
    $78K (2024)
  8. The@mary F Smith Family Foundation
    Smithtown, NY · Philanthropy, Voluntarism and Grantmaking Foundations
    $37K (2025)
  9. Human Potential Foundation
    Smithtown, NY
    $22K (2024)

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