93611 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 71% of adults in 93611 typically vote, above the U.S. average of about 62%. Among adults in 93611, ~31% vote Democratic, ~40% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 93611 compares
Among zip codes within 15 miles, 93611 leans more Republican than 20 of 26 neighbors.
93611 runs about 34 points more Republican than California as a whole. California leans Democratic overall, while 93611 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93611. The east side is the most Republican-leaning (R+18) and the west side is the least Republican-leaning (R+7), a spread of about 12 points.
Why 93611 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 93611, not a ranked or complete list of what matters most.
93611 votes Republican even though it is densely developed (about 98%, far above the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 78% of households in 93611 are family households, above 88% of zip codes. 93611 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 93611, CA sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 93611 looks the way it does
Turnout in 93611 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.