93240 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 61% of adults in 93240 typically vote, near the U.S. average of about 62%. Among adults in 93240, ~19% vote Democratic, ~42% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 93240 compares
Among zip codes within 15 miles, 93240 leans more Republican than 2 of 5 neighbors.
93240 runs about 59 points more Republican than California as a whole. California leans Democratic overall, while 93240 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93240. The southeast side is the most Republican-leaning (R+47) and the southwest side is the least Republican-leaning (R+32), a spread of about 14 points.
Why 93240 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 93240, not a ranked or complete list of what matters most.
93240 votes against the grain of California. California leans Democratic overall, while 93240 runs about 59 points more Republican. Low college attainment predicts Republican voting, and 93240 sits in the bottom quarter (about 11%, below 92% of zip codes).
Food insecurity and voter turnout
Places with high food insecurity tend to turn out at a lower rate; 93240, CA sits in the top tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 93240 looks the way it does
Areas with high food insecurity turn out at lower rates. About 31% of adults in 93240 report food insecurity, about 14 points above the U.S. average of 16%. Limited routine healthcare access lines up with lower turnout, and 93240 sits in the bottom quarter on routine-care measures. Renters vote less often than owners, and about 34% of households in 93240 rent, above 81% 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.