93516 leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 50% of adults in 93516 typically vote, below the U.S. average of about 62%. Among adults in 93516, ~16% vote Democratic, ~34% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 93516 compares
93516 sits in a sparsely populated area with few comparable zip codes nearby.
93516 runs about 56 points more Republican than California as a whole. California leans Democratic overall, while 93516 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93516. The northeast side is the most Republican-leaning (R+50) and the north side is the least Republican-leaning (R+31), a spread of about 20 points.
Why 93516 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 93516, not a ranked or complete list of what matters most.
93516 votes against the grain of California. California leans Democratic overall, while 93516 runs about 56 points more Republican.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 93516, CA sits in the bottom 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 93516 looks the way it does
Areas with high food insecurity turn out at lower rates. About 26% of adults in 93516 report food insecurity, about 10 points above the U.S. average of 16%. Limited routine healthcare access lines up with lower turnout, and 93516 sits in the bottom quarter on routine-care measures. Renters vote less often than owners, and about 46% of households in 93516 rent, about 21 points above the U.S. average of 25%. 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.