92606 leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 56% of adults in 92606 typically vote, below the U.S. average of about 62%. Among adults in 92606, ~32% vote Democratic, ~24% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 92606 compares
Among zip codes within 15 miles, 92606 leans more Democratic than 54 of 70 neighbors.
92606 runs about 5 points more Republican than California as a whole.
Politics vary noticeably by block within 92606. The west side is the most Democratic-leaning (D+22) and the northeast side is the least Democratic-leaning (D+11), a spread of about 12 points.
Why 92606 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 92606, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 99% of residents in 92606 live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 92606 sits in the top quarter (about 67%, above 97% of zip codes). A high never-married share predicts Democratic voting, and about 35% of adults in 92606 have never been married, above 79% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 92606, CA sits in the top tenth nationally on this measure.
Why turnout in 92606 looks the way it does
Renters vote less often than owners. About 55% of households in 92606 rent, about 30 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 8% of homes in 92606 have more than one occupant per room, 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.