93407 leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 42% of adults in 93407 typically vote, below the U.S. average of about 62%. Among adults in 93407, ~31% vote Democratic, ~11% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How 93407 compares
Among zip codes within 15 miles, 93407 is the most Democratic-leaning.
93407 runs about 28 points more Democratic than California as a whole.
Why 93407 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 93407, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 49% of adults in 93407 hold a bachelor's degree, about 21 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and more than 99% of adults in 93407 have never been married, in the top fraction of zip codes.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 93407, CA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 93407 looks the way it does
Renters vote less often than owners. About 61% of households in 93407 rent, about 36 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 36% of adults in 93407 report food insecurity, above 97% of zip codes. Low high-school completion lines up with lower turnout, and more than 99% of adults in 93407 have completed high school, in the top fraction 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.