95257 leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 64% of adults in 95257 typically vote, near the U.S. average of about 62%. Among adults in 95257, ~24% vote Democratic, ~40% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 95257 compares
Among zip codes within 15 miles, 95257 leans more Republican than 6 of 13 neighbors.
95257 runs about 46 points more Republican than California as a whole. California leans Democratic overall, while 95257 is one of the few Republican-leaning pockets.
Why 95257 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 95257, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 13% of adults in 95257 hold a bachelor's degree, about 22 points below the California average of 35%. Rural areas vote Republican, and 95257 sits in the bottom quarter on density (about 4%, below 89% of zip codes). 95257 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 95257, CA sits in the bottom 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 95257 looks the way it does
Homeowners vote more often than renters. About 92% of households in 95257 own their home, about 30 points above the California average of 62%. 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.