95148 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 53% of adults in 95148 typically vote, below the U.S. average of about 62%. Among adults in 95148, ~32% vote Democratic, ~21% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 95148 compares
Among zip codes within 15 miles, 95148 leans more Democratic than 3 of 48 neighbors.
Politically, 95148 sits close to the rest of California.
Why 95148 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 95148, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 93% of residents in 95148 live in densely developed areas, about 57 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 95148 sits in the top quarter (about 42%, above 82% of zip codes). A high never-married share predicts Democratic voting, and about 36% of adults in 95148 have never been married, above 81% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 95148, 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 95148 looks the way it does
Crowded housing lines up with lower turnout. About 8% of homes in 95148 have more than one occupant per room, above 93% of zip codes. Low high-school completion lines up with lower turnout, and about 84% of adults in 95148 have completed high school, below 84% 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.