92240 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 43% of adults in 92240 typically vote, below the U.S. average of about 62%. Among adults in 92240, ~25% vote Democratic, ~18% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.
How 92240 compares
Among zip codes within 15 miles, 92240 leans more Democratic than 7 of 11 neighbors.
92240 runs about 5 points more Republican than California as a whole.
Politics vary noticeably by block within 92240. The south side is the most Democratic-leaning (D+21) and the northwest side is the least Democratic-leaning (D+10), a spread of about 11 points.
Why 92240 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 92240, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 39% of adults in 92240 have never been married, about 10 points above the U.S. average of 29%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 92240 is about 22%, compared to around 46% in nearby zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 92240, CA sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 92240 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 92240 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 42% of households in 92240 rent, about 17 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 29% of adults in 92240 report food insecurity, above 93% 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.