95616 is a Democratic stronghold. About 83% of voters here vote Democratic and 17% Republican.
About 51% of adults in 95616 typically vote, below the U.S. average of about 62%. Among adults in 95616, ~42% vote Democratic, ~9% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 95616 compares
Among zip codes within 15 miles, 95616 is the most Democratic-leaning.
95616 runs about 47 points more Democratic than California as a whole.
Politics vary noticeably by block within 95616. The north side is the most Democratic-leaning (D+71) and the southwest side is the least Democratic-leaning (D+44), a spread of about 27 points.
Why 95616 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 95616, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in 95616 hold a bachelor's degree, about 47 points above the U.S. average of 28%. Dense areas vote Democratic, and 95616 sits in the top fifth on density (about 89%, above 87% of zip codes). A high never-married share predicts Democratic voting, and about 63% of adults in 95616 have never been married, above 98% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 95616, CA sits in the top tenth nationally on this measure.
Why turnout in 95616 looks the way it does
Renters vote less often than owners. About 67% of households in 95616 rent, about 42 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 6% of homes in 95616 have more than one occupant per room, above 89% 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.