94015 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 51% of adults in 94015 typically vote, below the U.S. average of about 62%. Among adults in 94015, ~35% vote Democratic, ~16% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 94015 compares
Among zip codes within 15 miles, 94015 leans more Democratic than 2 of 49 neighbors.
94015 runs about 17 points more Democratic than California as a whole.
Why 94015 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 94015, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 94015 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 94015 sits in the top quarter (about 41%, above 82% of zip codes). A high never-married share predicts Democratic voting, and about 38% of adults in 94015 have never been married, above 85% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 94015, CA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 94015 looks the way it does
Crowded housing lines up with lower turnout. About 13% of homes in 94015 have more than one occupant per room, above 98% of zip codes. Renters vote less often than owners, and about 39% of households in 94015 rent, above 86% 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.