95429 leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 49% of adults in 95429 typically vote, below the U.S. average of about 62%. Among adults in 95429, ~32% vote Democratic, ~17% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 95429 compares
Among zip codes within 15 miles, 95429 is the most Democratic-leaning.
95429 runs about 10 points more Democratic than California as a whole.
Why 95429 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 95429. The lean here lands roughly where demographic data alone would predict.
High-school completion and voter turnout
Places with low high-school-completion share tend to turn out at a lower rate; 95429, CA sits in the bottom tenth nationally on this measure.
Why turnout in 95429 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95429 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 27% of adults in 95429 report food insecurity, above 91% of zip codes. Low high-school completion lines up with lower turnout, and about 70% of adults in 95429 have completed high school, below 98% 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.