93242 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 46% of adults in 93242 typically vote, below the U.S. average of about 62%. Among adults in 93242, ~15% vote Democratic, ~31% Republican, and ~54% don't vote. The map below shows estimated turnout by block group.
How 93242 compares
Among zip codes within 15 miles, 93242 leans more Republican than 8 of 9 neighbors.
93242 runs about 55 points more Republican than California as a whole. California leans Democratic overall, while 93242 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93242. The southwest side is the most Republican-leaning (R+51) and the south side is the least Republican-leaning (R+27), a spread of about 24 points.
Why 93242 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 93242, not a ranked or complete list of what matters most.
93242 votes against the grain of California. California leans Democratic overall, while 93242 runs about 55 points more Republican. Low college attainment predicts Republican voting, and 93242 sits in the bottom quarter (about 15%, below 81% of zip codes).
High-school completion, uninsured rate, and voter turnout
Places that combine low high-school-completion share and a high uninsured rate tend to turn out at a lower rate, as 93242, CA does.
Why turnout in 93242 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93242 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 36% of households in 93242 rent, above 83% of zip codes. High food insecurity lines up with lower turnout, and about 27% of adults in 93242 report food insecurity, above 91% 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.