93550 leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 41% of adults in 93550 typically vote, below the U.S. average of about 62%. Among adults in 93550, ~25% vote Democratic, ~16% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How 93550 compares
Among zip codes within 15 miles, 93550 leans more Democratic than 8 of 9 neighbors.
Politically, 93550 sits close to the rest of California.
Politics vary noticeably by block within 93550. The northwest side runs the most Democratic (D+32) and the southwest side runs the most Republican (R+20), a spread of about 52 points.
Why 93550 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 93550, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 86% of residents in 93550 live in densely developed areas, about 50 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 45% of adults in 93550 have never been married, above 92% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 93550, CA sits in the top tenth nationally on this measure.
Why turnout in 93550 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93550 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 47% of households in 93550 rent, compared to around 27% in nearby zip codes. High food insecurity lines up with lower turnout, and about 33% of adults in 93550 report food insecurity, above 96% 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.