95457 leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 56% of adults in 95457 typically vote, below the U.S. average of about 62%. Among adults in 95457, ~25% vote Democratic, ~31% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 95457 compares
Among zip codes within 15 miles, 95457 leans more Republican than 6 of 7 neighbors.
95457 runs about 29 points more Republican than California as a whole. California leans Democratic overall, while 95457 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95457. The east side is the most split-leaning (R+16) and the northwest side is the least split-leaning (R+2), a spread of about 13 points.
Why 95457 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 95457, not a ranked or complete list of what matters most.
95457 votes against the grain of California. California leans Democratic overall, while 95457 runs about 29 points more Republican.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 95457, CA sits below the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 95457 looks the way it does
Areas with low high-school completion turn out at lower rates. About 87% of adults in 95457 have completed high school, below 76% 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.