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Data / Nonprofits / California / San Mateo / Philanthropy, voluntarism and grantmaking foundations

Philanthropy, voluntarism and grantmaking foundations nonprofits in San Mateo, CA: 42 registered with the IRS

42 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in San Mateo, CA, 41 of them 501(c)(3) charities; the 1 that report revenue took in $1.1 million. The largest by revenue: Hillsdale High School Foundation Inc ($1.1 million).

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Get philanthropy, voluntarism and grantmaking foundations nonprofits in San Mateo

Every organization, largest by revenue first

OrganizationTypeSinceRevenueAssetsFiling
Hillsdale High School Foundation Inc501(c)(3)2009$1.1 million$984,5992025-06
Baszucki Family Foundation501(c)(3)2022$39.5 million2024-12
Chance To Excel501(c)(3)2017$649,8312024-12
Clement Chen Family Foundation501(c)(3)1995$222,5262025-12
Dave Stiles Foundation501(c)(3)2018$0$02024-12
Dennis and Gloria Obrien Foundation501(c)(3)2003$845,6992025-12
Drysdale Family Foundation501(c)(3)2019$1.3 million2024-12
Elfenworks Foundation501(c)(3)2007$5.4 million2025-12
Eric Roberts Foundation501(c)(3)2007$259,0292025-12
Erik S Cassel Foundation501(c)(3)2019$7 million2024-12
Forest Rose Leaf Family Foundation501(c)(3)2022$305,6082025-12
Foundation for the Smac Education and Leadership Programs501(c)(3)2023$0$02024-12
Franklin Templeton Charitable Foundation Inc501(c)(3)2000$1.8 million2025-09
Gather and Give501(c)(3)2026
Ginn Family Foundation501(c)(3)2006$19 million2024-12
Greater San Mateo Kiwanis Club Foundation501(c)(3)2005$0$02025-09
Greene Van Arsdale Foundation501(c)(3)1997$42.3 million2025-12
Heart of Wisdom Foundation501(c)(3)2024$103,1262024-12
Helen and Sanford Diller Family Foundation501(c)(3)2017$812,0902024-12
Jacobs Impact Fund Inc501(c)(3)2025
John & Arlette Monfredini Foundation501(c)(3)2016$1.3 million2025-12
Kallen and Helen Chan Family Foundation501(c)(3)2004$10,0062025-12
Li & Liu Family Foundation501(c)(3)2017$2.5 million2025-08
Lijin Gouhua Foundation501(c)(3)2007$7.2 million2024-12
Marie Kendrick Otto Foundation501(c)(3)1998$621,2842025-12
Paul J Boschetto Foundation501(c)(3)2015$87,5182024-12
Porter Family Foundation501(c)(3)2004$1,2152025-07
Redwood Future Foundation501(c)(3)2025$0$02025-12
Robert I & Lien Q Chen Family Foundation501(c)(3)2015$3.1 million2024-12
SRCS501(c)(3)2025$0$02025-12
San Mateo Charities Inc501(c)(3)1999$0$02025-12
San Mateo County Community College District Financing Corporation501(c)(4)2005$0$02025-06
Shi and Xu Foundation501(c)(3)2024$22,1682025-12
Sone Philanthropy Inc501(c)(3)2021$105,6362025-09
Sowing Futuros501(c)(3)2023$11,9452025-12
The Courtney Roberts and Steve Preston Family Foundation501(c)(3)2007$8.7 million2025-12
The Mark and Kwala Roberts Fam Foundation501(c)(3)2007$1.1 million2025-12
The@marvin and Nancy Dennis Family Foundation501(c)(3)1997$816,4392024-12
Tree By the River Foundation Inc501(c)(3)2007$2.2 million2025-12
Vijay and Tina Patel Foundation Inc501(c)(3)2023$58,6452025-12
With Foundation501(c)(3)2002$8 million2025-06
Xelay Foundation501(c)(3)2016$2 million2025-12

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Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.