94587 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 50% of adults in 94587 typically vote, below the U.S. average of about 62%. Among adults in 94587, ~34% vote Democratic, ~16% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 94587 compares
Among zip codes within 15 miles, 94587 leans more Democratic than 9 of 50 neighbors.
94587 runs about 13 points more Democratic than California as a whole.
Politics vary noticeably by block within 94587. The southeast side is the most Democratic-leaning (D+37) and the west side is the least Democratic-leaning (D+27), a spread of about 10 points.
Why 94587 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 94587, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 92% of residents in 94587 live in densely developed areas, about 56 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 94587 sits in the top quarter (about 45%, above 85% of zip codes).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 94587, CA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 94587 looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in 94587 have more than one occupant per room, above 91% of zip codes. Low high-school completion lines up with lower turnout, and about 87% of adults in 94587 have completed high school, below 75% of zip codes. 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.