93701 leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 35% of adults in 93701 typically vote, below the U.S. average of about 62%. Among adults in 93701, ~23% vote Democratic, ~12% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How 93701 compares
Among zip codes within 15 miles, 93701 is the most Democratic-leaning.
93701 runs about 11 points more Democratic than California as a whole.
Why 93701 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 93701, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 93701 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 49% of adults in 93701 have never been married, above 95% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 93701, 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 93701 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93701 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 39%, about 23 points below the California average of 62%. Renters vote less often than owners, and about 83% of households in 93701 rent, compared to around 56% in nearby zip codes. High food insecurity lines up with lower turnout, and about 44% of adults in 93701 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.