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San Mateo, California

Youth and community nonprofits in San Mateo, CA

35 tax-exempt youth and community nonprofits based in San Mateo, from IRS data.

By type

Amateur sports17Youth development10PTA and PTO2Children's and youth services2Child care2Recreation and clubs1Arts education1

Swimming and water sports

Ac Water Polo Inc

San Mateo, CA 94402

Tax-exempt since 2022 · EIN 87-1002890

Youth development programs

Cake4kids

San Mateo, CA 94403

Tax-exempt since 2011 · EIN 45-3148916

Parent-teacher group (PTA or PTO)

Day School Foundation

San Mateo, CA 94401

Tax-exempt since 1996 · EIN 94-3240988

Children's and youth services

Flourish Hope Project

San Mateo, CA 94404

Tax-exempt since 2025 · EIN 39-3015697

Youth centers and clubs

Foster City Flyers

San Mateo, CA 94403

Tax-exempt since 2001 · EIN 94-3354365

Child day care

Newton Center

San Mateo, CA 94402

Tax-exempt since 2002 · EIN 94-3401055

Youth development

Tahdah Foundation

San Mateo, CA 94403

Tax-exempt since 2016 · EIN 81-3003647

Also in San Mateo

Licensed child care and after-school programs in San Mateo · California program rules

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Source: IRS Exempt Organizations Business Master File, posted October 13, 2026. We list 501(c)(3) organizations whose IRS activity code is youth development, amateur sports, camps and recreation, parent-teacher groups, children's services, child day care or arts education. We show the city and ZIP code only, never a street address or contact person. A listing is not an endorsement.