93238 leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 85% of adults in 93238 typically vote, above the U.S. average of about 62%. Among adults in 93238, ~36% vote Democratic, ~49% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 93238 compares
Among zip codes within 15 miles, 93238 is the least Republican-leaning.
93238 runs about 37 points more Republican than California as a whole. California leans Democratic overall, while 93238 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93238. The northwest side is the most Republican-leaning (R+25) and the west side is the least Republican-leaning (R+14), a spread of about 10 points.
Why 93238 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 93238, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 95% of residents in 93238 drive to work alone, about 21 points above the U.S. average of 74%. 93238 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as 93238, CA does.
Why turnout in 93238 looks the way it does
Areas with high high-school completion turn out at higher rates. More than 99% of adults in 93238 have completed high school, about 14 points above the California average of 86%. 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.