95012 leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 49% of adults in 95012 typically vote, below the U.S. average of about 62%. Among adults in 95012, ~32% vote Democratic, ~17% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 95012 compares
Among zip codes within 15 miles, 95012 leans more Democratic than 8 of 16 neighbors.
95012 runs about 12 points more Democratic than California as a whole.
Politics vary noticeably by block within 95012. The west side is the most Democratic-leaning (D+36) and the northeast side is the least Democratic-leaning (D+25), a spread of about 10 points.
Why 95012 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 95012, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 48% of adults in 95012 have never been married, well above similar-sized zip codes (around 30%).
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 95012, CA sits in the bottom quarter nationally 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 95012 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95012 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 23%, about 13 points above the California average of 10%. Renters vote less often than owners, and about 49% of households in 95012 rent, about 24 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 30% of adults in 95012 report food insecurity, above 94% 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.