91962 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 75% of adults in 91962 typically vote, above the U.S. average of about 62%. Among adults in 91962, ~25% vote Democratic, ~50% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 91962 compares
Among zip codes within 15 miles, 91962 is the most Republican-leaning.
91962 runs about 54 points more Republican than California as a whole. California leans Democratic overall, while 91962 is one of the few Republican-leaning pockets.
Why 91962 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 91962, not a ranked or complete list of what matters most.
91962 votes against the grain of California. California leans Democratic overall, while 91962 runs about 54 points more Republican.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 91962, CA sits in the top tenth nationally on this measure.
Why turnout in 91962 looks the way it does
Homeowners vote more often than renters. About 93% of households in 91962 own their home, about 31 points above the California average of 62%. 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.