95645 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 52% of adults in 95645 typically vote, below the U.S. average of about 62%. Among adults in 95645, ~20% vote Democratic, ~32% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.
How 95645 compares
Among zip codes within 15 miles, 95645 leans more Republican than 6 of 10 neighbors.
95645 runs about 45 points more Republican than California as a whole. California leans Democratic overall, while 95645 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95645. The north side is the most Republican-leaning (R+40) and the southwest side is the least Republican-leaning (R+16), a spread of about 24 points.
Why 95645 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 95645, not a ranked or complete list of what matters most.
95645 votes against the grain of California. California leans Democratic overall, while 95645 runs about 45 points more Republican.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 95645, CA sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 95645 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95645 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 38% of households in 95645 rent, above 85% of zip codes. High food insecurity lines up with lower turnout, and about 21% of adults in 95645 report food insecurity, above 82% 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.