93204 is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.
About 29% of adults in 93204 typically vote, below the U.S. average of about 62%. Among adults in 93204, ~15% vote Democratic, ~14% Republican, and ~71% don't vote. The map below shows estimated turnout by block group.
How 93204 compares
93204 sits in a sparsely populated area with few comparable zip codes nearby.
93204 runs about 16 points more Republican than California as a whole.
Politics vary noticeably by block within 93204. The south side runs the most Democratic (D+13) and the southeast side runs the most Republican (R+12), a spread of about 25 points.
Why 93204 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 93204. The lean here lands roughly where demographic data alone would predict.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 93204, 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 93204 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93204 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 43%, about 19 points below the California average of 62%. Renters vote less often than owners, and about 54% of households in 93204 rent, about 29 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 44% of adults in 93204 report food insecurity, in the top fraction 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.