Grantmaking foundations in San Mateo, CA
87 grantmaking foundations in San Mateo, California, ranked by recent giving reported to the IRS (about $170M combined).
Top foundations by giving
- $50M (2024)
- $38M (2024)
- $14M (2022)
- $10M (2024)
- $8.6M (2025)
- $6.8M (2024)
- $4.1M (2025)
- $4M (2025)
- $3.4M (2025)
- $2.3M (2025)
- $1.6M (2025)
- $1.6M (2025)
- $1.6M (2025)
- $1.4M (2025)
- $1.4M (2024)
- $1.3M (2025)
- $1.1M (2025)
- $1.1M (2024)
- $1M (2025)
- $1M (2025)
- $960K (2025)
- $900K (2025)
- $800K (2025)
- $800K (2025)
- $780K (2024)
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Causes in California
- Philanthropy, Voluntarism and Grantmaking Foundations 8,284 foundations
- Human Services 773 foundations
- Community Improvement and Capacity Building 611 foundations
- Education 574 foundations
- Arts, Culture and Humanities 528 foundations
- Environment 332 foundations
- Health Care 221 foundations
- Youth Development 200 foundations
- Mental Health and Crisis Intervention 177 foundations
- Crime and Legal-Related 160 foundations
- Public and Societal Benefit 157 foundations
- Animal-Related 140 foundations
- Public Safety, Disaster Preparedness and Relief 140 foundations
- Religion-Related 137 foundations
- Civil Rights, Social Action and Advocacy 132 foundations
- Medical Research 105 foundations
- Housing and Shelter 105 foundations
- Recreation and Sports 91 foundations
- Diseases, Disorders and Medical Disciplines 83 foundations
- International, Foreign Affairs and National Security 71 foundations
- Unknown 63 foundations
- Science and Technology 57 foundations
- Food, Agriculture and Nutrition 30 foundations
- Social Science 29 foundations
- Employment 23 foundations
- Mutual and Membership Benefit 20 foundations