92121 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 53% of adults in 92121 typically vote, below the U.S. average of about 62%. Among adults in 92121, ~34% vote Democratic, ~19% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 92121 compares
Among zip codes within 15 miles, 92121 leans more Democratic than 22 of 44 neighbors.
92121 runs about 8 points more Democratic than California as a whole.
Politics vary noticeably by block within 92121. The south side is the most Democratic-leaning (D+32) and the northwest side is the least Democratic-leaning (D+15), a spread of about 17 points.
Why 92121 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 92121, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 74% of adults in 92121 hold a bachelor's degree, about 45 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 41% of adults in 92121 have never been married, above 88% of zip codes.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 92121, CA sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 92121 looks the way it does
Renters vote less often than owners. About 51% of households in 92121 rent, about 26 points above the U.S. average of 25%. Strong routine healthcare access lines up with higher turnout, and 92121 sits in the top quarter on routine-care measures. 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.