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San Mateo County

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Political Insights
Total Registration
Political Lean
Registration Advantage
Lowest Turnout
Highest Turnout
Key Metrics
Total Population
765,436
18+ Population
611,225
Over 65 Population
Hispanic/Latino Population
Median Household Income
Bachelor’s or Higher
Public Assistance/SNAP
Geographic Overview

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Electoral History
2024 President
2022 Governor
2020 President
2018 Governor
2016 President
2014 Governor

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Ideology

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Elected Officials
Official Page
Countywide Officials
Stephen M. Wagstaffe

District Attorney

Christina Corpus

Sheriff

Mark Church

Assessor-Recorder-Clerk

Juan Raigoza

Auditor-Controller

Sandie Arnott

Tax Collector

Board of Supervisors
Official Page
Jackie Speier

Supervisor - District 1

Noelia Corzo

Supervisor - District 2

Ray Mueller

Supervisor - District 3

Lisa Gauthier

Supervisor - District 4

David Canepa

Supervisor - District 5