92328 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 35% of adults in 92328 typically vote, below the U.S. average of about 62%. Among adults in 92328, ~20% vote Democratic, ~15% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How 92328 compares
92328 runs about 4 points more Republican than California as a whole.
Why 92328 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 92328, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 49% of adults in 92328 hold a bachelor's degree, about 21 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 47% of adults in 92328 have never been married, above 93% of zip codes.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; 92328, CA sits in the bottom tenth nationally on this measure.
Why turnout in 92328 looks the way it does
Renters vote less often than owners. About 72% of households in 92328 rent, about 47 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 11% of homes in 92328 have more than one occupant per room, above 97% of zip codes. High-crime urban areas turn out at lower rates, and 92328 sits in the top 15% on a violent-crime measure. 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.