94515 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 64% of adults in 94515 typically vote, near the U.S. average of about 62%. Among adults in 94515, ~45% vote Democratic, ~19% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 94515 compares
Among zip codes within 15 miles, 94515 leans more Democratic than 11 of 16 neighbors.
94515 runs about 21 points more Democratic than California as a whole.
Politics vary noticeably by block within 94515. The south side is the most Democratic-leaning (D+45) and the northeast side is the least Democratic-leaning (D+24), a spread of about 21 points.
Why 94515 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 94515, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 37% of adults in 94515 hold a bachelor's degree, about 9 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 94515, CA sits in the top quarter nationally on this measure.
Why turnout in 94515 looks the way it does
Turnout in 94515 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.