90006 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 30% of adults in 90006 typically vote, below the U.S. average of about 62%. Among adults in 90006, ~21% vote Democratic, ~9% Republican, and ~70% don't vote. The map below shows estimated turnout by block group.
How 90006 compares
Among zip codes within 15 miles, 90006 leans more Democratic than 73 of 172 neighbors.
90006 runs about 19 points more Democratic than California as a whole.
Politics vary noticeably by block within 90006. The southwest side is the most Democratic-leaning (D+49) and the north side is the least Democratic-leaning (D+36), a spread of about 13 points.
Why 90006 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 90006, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 90006 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 54% of adults in 90006 have never been married, above 97% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 90006, 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 90006 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 90006 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 15 points below the California average of 62%. Renters vote less often than owners, and about 91% of households in 90006 rent, about 66 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 37% of adults in 90006 report food insecurity, above 97% 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.