93927 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 36% of adults in 93927 typically vote, below the U.S. average of about 62%. Among adults in 93927, ~23% vote Democratic, ~13% Republican, and ~64% don't vote. The map below shows estimated turnout by block group.
How 93927 compares
93927 sits in a sparsely populated area with few comparable zip codes nearby.
93927 runs about 7 points more Democratic than California as a whole.
Politics vary noticeably by block within 93927. The east side runs the most Democratic (D+31) and the southwest side runs the most Republican (R+17), a spread of about 48 points.
Why 93927 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 93927, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 76% of residents in 93927 live in densely developed areas, about 40 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 43% of adults in 93927 have never been married, above 90% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 93927, 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 93927 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93927 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 14 points below the California average of 62%. Renters vote less often than owners, and about 47% of households in 93927 rent, about 22 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 38% of adults in 93927 report food insecurity, above 97% 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.