95912 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 53% of adults in 95912 typically vote, below the U.S. average of about 62%. Among adults in 95912, ~21% vote Democratic, ~32% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 95912 compares
Among zip codes within 15 miles, 95912 leans more Republican than 4 of 7 neighbors.
95912 runs about 40 points more Republican than California as a whole. California leans Democratic overall, while 95912 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95912. The northeast side is the most Republican-leaning (R+40) and the northwest side is the least Republican-leaning (R+7), a spread of about 33 points.
Why 95912 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 95912, not a ranked or complete list of what matters most.
95912 votes against the grain of California. California leans Democratic overall, while 95912 runs about 40 points more Republican. A high family-household share predicts Republican voting, and about 74% of households in 95912 are family households, above 76% of zip codes.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 95912, CA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 95912 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95912 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 26% of adults in 95912 report food insecurity, above 90% 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.