94536 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 53% of adults in 94536 typically vote, below the U.S. average of about 62%. Among adults in 94536, ~36% vote Democratic, ~17% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 94536 compares
Among zip codes within 15 miles, 94536 leans more Democratic than 17 of 47 neighbors.
94536 runs about 15 points more Democratic than California as a whole.
Why 94536 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 94536, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 94536 live in densely developed areas, about 59 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 94536 sits in the top quarter (about 59%, above 94% of zip codes).
Population density and Democratic lean
Places with high population density tend to lean Democratic; 94536, CA sits in the top tenth nationally on this measure.
Why turnout in 94536 looks the way it does
Crowded housing lines up with lower turnout. About 10% of homes in 94536 have more than one occupant per room, above 96% of zip codes. Strong routine healthcare access lines up with higher turnout, and 94536 sits in the top quarter on routine-care measures. Renters vote less often than owners, and about 42% of households in 94536 rent, about 17 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.