93955 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 52% of adults in 93955 typically vote, below the U.S. average of about 62%. Among adults in 93955, ~35% vote Democratic, ~17% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.
How 93955 compares
Among zip codes within 15 miles, 93955 leans more Democratic than 9 of 15 neighbors.
93955 runs about 15 points more Democratic than California as a whole.
Politics vary noticeably by block within 93955. The southeast side is the most Democratic-leaning (D+42) and the north side is the least Democratic-leaning (D+32), a spread of about 11 points.
Why 93955 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 93955, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 91% of residents in 93955 live in densely developed areas, about 55 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 40% of adults in 93955 have never been married, above 87% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 93955, CA sits in the top tenth 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 93955 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93955 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 65% of households in 93955 rent, compared to around 42% in nearby zip codes. High food insecurity lines up with lower turnout, and about 23% of adults in 93955 report food insecurity, above 85% 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.