North Central San Francisco, San Mateo, CA Political Map | Democrat & Republican Areas in North Central San Francisco

North Central San Francisco is a Democratic stronghold. About 75% of voters here vote Democratic and 25% Republican.

 
North Central San Francisco, San Mateo, CA block-group political-lean map
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About 47% of adults in North Central San Francisco typically vote, below the U.S. average of about 62%. Among adults in North Central San Francisco, ~35% vote Democratic, ~12% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.

North Central San Francisco, San Mateo, CA block-group voter-turnout map
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How North Central San Francisco compares

Among neighborhoods within 5 miles, North Central San Francisco leans more Democratic than 7 of 13 neighbors.

North Central San Francisco runs about 30 points more Democratic than California as a whole.

Politics vary noticeably by block within North Central San Francisco. The west side is the most Democratic-leaning (D+56) and the northeast side is the least Democratic-leaning (D+46), a spread of about 10 points.

Why North Central San Francisco leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for North Central San Francisco, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in North Central San Francisco live in densely developed areas, about 64 points above the U.S. average of 36%.

High-school completion, developed land, and voter turnout

Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as North Central San Francisco, San Mateo, CA does.

Why turnout in North Central San Francisco looks the way it does

Crowded housing lines up with lower turnout. About 15% of homes in North Central San Francisco have more than one occupant per room, above 96% of neighborhoods. Renters vote less often than owners, and about 68% of households in North Central San Francisco rent, compared to around 50% in nearby neighborhoods. Low high-school completion lines up with lower turnout, and about 83% of adults in North Central San Francisco have completed high school, below 80% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

Sources and methodology

Precinct-level voting records used to fit the model come from California Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.

Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.