90041 leans heavily Democratic by roughly 46 points: about 73% of voters vote Democratic and 27% Republican.
About 59% of adults in 90041 typically vote, near the U.S. average of about 62%. Among adults in 90041, ~43% vote Democratic, ~16% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How 90041 compares
Among zip codes within 15 miles, 90041 leans more Democratic than 87 of 144 neighbors.
90041 runs about 26 points more Democratic than California as a whole.
Politics vary noticeably by block within 90041. The southeast side is the most Democratic-leaning (D+62) and the northeast side is the least Democratic-leaning (D+34), a spread of about 28 points.
Why 90041 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 90041, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 90041 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 90041 sits in the top quarter (about 54%, above 91% of zip codes). A high never-married share predicts Democratic voting, and about 38% of adults in 90041 have never been married, above 84% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 90041, 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 90041 looks the way it does
Renters vote less often than owners. About 46% of households in 90041 rent, about 21 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 7% of homes in 90041 have more than one occupant per room, above 93% 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.