92501 leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 46% of adults in 92501 typically vote, below the U.S. average of about 62%. Among adults in 92501, ~27% vote Democratic, ~19% Republican, and ~54% don't vote. The map below shows estimated turnout by block group.
How 92501 compares
Among zip codes within 15 miles, 92501 leans more Democratic than 33 of 42 neighbors.
Politically, 92501 sits close to the rest of California.
Politics vary noticeably by block within 92501. The south side is the most Democratic-leaning (D+28) and the northwest side is the least Democratic-leaning (D+11), a spread of about 17 points.
Why 92501 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 92501, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 94% of residents in 92501 live in densely developed areas, about 57 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in 92501 have never been married, above 94% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 92501, CA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 92501 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 92501 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 54% of households in 92501 rent, about 29 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 23% of adults in 92501 report food insecurity, above 86% 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.