95670 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 58% of adults in 95670 typically vote, near the U.S. average of about 62%. Among adults in 95670, ~32% vote Democratic, ~26% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 95670 compares
Among zip codes within 15 miles, 95670 leans more Democratic than 22 of 52 neighbors.
95670 runs about 10 points more Republican than California as a whole.
Politics vary noticeably by block within 95670. The southwest side runs the most Democratic (D+22) and the southeast side runs the most Republican (Even), a spread of about 23 points.
Why 95670 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 95670, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 95670 live in densely developed areas, about 58 points above the U.S. average of 36%.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 95670, 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 95670 looks the way it does
Renters vote less often than owners. About 44% of households in 95670 rent, about 19 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 7% of homes in 95670 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.