91202 leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 58% of adults in 91202 typically vote, near the U.S. average of about 62%. Among adults in 91202, ~32% vote Democratic, ~26% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 91202 compares
Among zip codes within 15 miles, 91202 leans more Democratic than 7 of 139 neighbors.
91202 runs about 8 points more Republican than California as a whole.
Politics vary noticeably by block within 91202. The southeast side is the most Democratic-leaning (D+22) and the northeast side is the least Democratic-leaning (Even), a spread of about 21 points.
Why 91202 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 91202, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 93% of residents in 91202 live in densely developed areas, about 57 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 91202 sits in the top quarter (about 50%, above 89% of zip codes). A high never-married share predicts Democratic voting, and about 34% of adults in 91202 have never been married, above 77% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 91202, 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 91202 looks the way it does
Renters vote less often than owners. About 57% of households in 91202 rent, about 32 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 7% of homes in 91202 have more than one occupant per room, above 92% 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.