96090 is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 43% of adults in 96090 typically vote, below the U.S. average of about 62%. Among adults in 96090, ~10% vote Democratic, ~33% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.
How 96090 compares
Among zip codes within 15 miles, 96090 is the most Republican-leaning.
96090 runs about 76 points more Republican than California as a whole. California leans Democratic overall, while 96090 is one of the few Republican-leaning pockets.
Why 96090 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 96090, not a ranked or complete list of what matters most.
96090 votes against the grain of California. California leans Democratic overall, while 96090 runs about 76 points more Republican. A high family-household share predicts Republican voting, and about 79% of households in 96090 are family households, above 90% of zip codes.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 96090, CA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 96090 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 96090 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 25% of adults in 96090 report food insecurity, above 89% of zip codes. Low high-school completion lines up with lower turnout, and about 77% of adults in 96090 have completed high school, below 94% 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.