90747 is a Democratic stronghold. About 81% of voters here vote Democratic and 19% Republican.
About 72% of adults in 90747 typically vote, above the U.S. average of about 62%. Among adults in 90747, ~58% vote Democratic, ~14% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 90747 compares
Among zip codes within 15 miles, 90747 leans more Democratic than 118 of 129 neighbors.
90747 runs about 41 points more Democratic than California as a whole.
Why 90747 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 90747, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 90747 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 90747 sits in the top quarter (about 61%, above 94% of zip codes). A high never-married share predicts Democratic voting, and about 45% of adults in 90747 have never been married, above 92% of zip codes.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 90747, 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 90747 looks the way it does
Homeowners vote more often than renters. More than 99% of households in 90747 own their home, about 38 points above the California average of 62%. High high-school completion lines up with higher turnout, and more than 99% of adults in 90747 have completed high school, in the top fraction 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.