93737 leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 57% of adults in 93737 typically vote, near the U.S. average of about 62%. Among adults in 93737, ~22% vote Democratic, ~35% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How 93737 compares
Among zip codes within 15 miles, 93737 leans more Republican than 25 of 26 neighbors.
93737 runs about 43 points more Republican than California as a whole. California leans Democratic overall, while 93737 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93737. The east side is the most Republican-leaning (R+39) and the northwest side is the least Republican-leaning (R+10), a spread of about 29 points.
Why 93737 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 93737, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 93737 drive to work alone, about 10 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 86% of households in 93737 are family households, above 98% of zip codes. 93737 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 93737, CA sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 93737 looks the way it does
Crowded housing lines up with lower turnout. About 4% of homes in 93737 have more than one occupant per room, above 82% 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.