95811 is a Democratic stronghold. About 79% of voters here vote Democratic and 21% Republican.
About 48% of adults in 95811 typically vote, below the U.S. average of about 62%. Among adults in 95811, ~38% vote Democratic, ~10% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.
How 95811 compares
Among zip codes within 15 miles, 95811 leans more Democratic than 44 of 48 neighbors.
95811 runs about 38 points more Democratic than California as a whole.
Politics vary noticeably by block within 95811. The southeast side is the most Democratic-leaning (D+77) and the north side is the least Democratic-leaning (D+39), a spread of about 38 points.
Why 95811 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 95811, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 92% of residents in 95811 live in densely developed areas, about 56 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 95811 sits in the top quarter (about 44%, above 85% of zip codes). A high never-married share predicts Democratic voting, and about 60% of adults in 95811 have never been married, above 98% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 95811, CA sits in the top 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 95811 looks the way it does
Renters vote less often than owners. About 84% of households in 95811 rent, about 59 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 95811 sits in the top 15% on a violent-crime measure. 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.