94606 is a Democratic stronghold. About 80% of voters here vote Democratic and 20% Republican.
About 41% of adults in 94606 typically vote, below the U.S. average of about 62%. Among adults in 94606, ~33% vote Democratic, ~8% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How 94606 compares
Among zip codes within 15 miles, 94606 leans more Democratic than 51 of 90 neighbors.
94606 runs about 40 points more Democratic than California as a whole.
Politics vary noticeably by block within 94606. The northwest side is the most Democratic-leaning (D+72) and the southeast side is the least Democratic-leaning (D+50), a spread of about 22 points.
Why 94606 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 94606, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 99% of residents in 94606 live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 94606 sits in the top quarter (about 38%, above 79% of zip codes). A high never-married share predicts Democratic voting, and about 50% of adults in 94606 have never been married, above 95% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 94606, CA sits in the top tenth nationally on this measure.
Why turnout in 94606 looks the way it does
Renters vote less often than owners. About 77% of households in 94606 rent, about 52 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 23% of adults in 94606 report food insecurity, above 85% 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.