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 (page 3)

51. Hip Housing Affordable Ventures Inc Hhav

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $180K (2025)
52. San Mateo Rotary Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $160K (2025)
53. J H Robbins Foundation

    San Mateo, CA
    $160K (2025)
54. Assistance League of San Mateo County

    San Mateo, CA · Environment
    $150K (2025)
55. Tahdah Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $110K (2025)
56. Chance to Excel

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $110K (2024)
57. Tree by the River Foundation Inc

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $94K (2025)
58. Hypopara Research Foundation

    San Mateo, CA · Medical Research
    $92K (2024)
59. Lyda-Rico Deluca Foundation Inc

    San Mateo, CA
    $85K (2024)
60. Piedemonte Charitable Tr 020497

    San Mateo, CA · Human Services
    $85K (2024)
61. China Times Cultural Foundation

    San Mateo, CA
    $79K (2025)
62. John & Arlette Monfredini Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $65K (2025)
63. Clement Chen Family Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $63K (2025)
64. Bohannon Foundation

    San Mateo, CA
    $63K (2024)
65. Drysdale Family Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $59K (2024)
66. Endue Foundation

    San Mateo, CA · Crime and Legal-Related
    $58K (2025)
67. G W Williams Foundation

    San Mateo, CA
    $51K (2025)
68. The@marvin and Nancy Dennis Family Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $46K (2024)
69. Paul J Boschetto Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $45K (2024)
70. Kallen and Helen Chan Family Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $37K (2022)
71. American Legion

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $31K (2026)
72. Wolfe Foundation

    San Mateo, CA
    $29K (2025)
73. Goshen Foundation

    San Mateo, CA · Religion-Related
    $24K (2024)
74. Porter Family Foundation

    San Mateo, CA · Philanthropy, Voluntarism and Grantmaking Foundations
    $23K (2025)
75. Green Apple Foundation Inc

    San Mateo, CA · Youth Development
    $20K (2025)