95330 is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.
About 56% of adults in 95330 typically vote, below the U.S. average of about 62%. Among adults in 95330, ~29% vote Democratic, ~27% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 95330 compares
Among zip codes within 15 miles, 95330 leans more Democratic than 11 of 22 neighbors.
95330 runs about 17 points more Republican than California as a whole.
Politics vary noticeably by block within 95330. The south side runs the most Democratic (D+9) and the southeast side runs the most Republican (R+15), a spread of about 23 points.
Why 95330 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 95330. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 95330, CA sits in the top quarter 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 95330 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95330 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 7% of homes in 95330 have more than one occupant per room, above 92% 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.