93606 leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 41% of adults in 93606 typically vote, below the U.S. average of about 62%. Among adults in 93606, ~17% vote Democratic, ~24% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How 93606 compares
Among zip codes within 15 miles, 93606 leans more Republican than 16 of 17 neighbors.
93606 runs about 38 points more Republican than California as a whole. California leans Democratic overall, while 93606 is one of the few Republican-leaning pockets.
Why 93606 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 93606, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 89% of households in 93606 are family households, about 22 points above the U.S. average of 67%. 93606 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 93606, CA sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 93606 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93606 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 13 points below the California average of 62%. High food insecurity lines up with lower turnout, and about 34% of adults in 93606 report food insecurity, above 96% of zip codes. Low high-school completion lines up with lower turnout, and about 50% of adults in 93606 have completed high school, in the bottom 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.