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San Mateo County

765,436 Population
445,212 Voters
Countywide District 1 District 2 District 3 District 4 District 5
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San Mateo County

765,436 Population
445,212 Voters
Countywide District 1 District 2 District 3 District 4 District 5

Unlock full voter and turnout data for San Mateo Voter counts, turnout history, and demographics—ready for your next briefing in minutes, not hours.

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How San Mateo County Voted

2025 Special

Year
2025 2024 2022 2021 2020 2019 2018 2016 2015 2014 2012
Type
General Primary Special
How they voted in other elections
1 race analyzed
|
Statewide & Federal 1
Proposition 50 Congressional Redistricting
PASSED ~XX% Yes +52.0%
Congressional Redistricting
Yes
~XX% +52.0% ~XXX,XXX
No
~XX% -52.0% ~XX,XXX
~XXX,XXX total votes
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