95828 leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 43% of adults in 95828 typically vote, below the U.S. average of about 62%. Among adults in 95828, ~27% vote Democratic, ~16% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.
How 95828 compares
Among zip codes within 15 miles, 95828 leans more Democratic than 22 of 43 neighbors.
Politically, 95828 sits close to the rest of California.
Politics vary noticeably by block within 95828. The southwest side is the most Democratic-leaning (D+34) and the northeast side is the least Democratic-leaning (D+9), a spread of about 25 points.
Why 95828 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 95828, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 97% of residents in 95828 live in densely developed areas, about 61 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 41% of adults in 95828 have never been married, above 88% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 95828, CA sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 95828 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95828 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 36% of households in 95828 rent, above 83% of zip codes. High food insecurity lines up with lower turnout, and about 25% of adults in 95828 report food insecurity, above 88% 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.