92066 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 57% of adults in 92066 typically vote, near the U.S. average of about 62%. Among adults in 92066, ~21% vote Democratic, ~35% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 92066 compares
Among zip codes within 15 miles, 92066 is the most Republican-leaning.
92066 runs about 44 points more Republican than California as a whole. California leans Democratic overall, while 92066 is one of the few Republican-leaning pockets.
Why 92066 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 92066, not a ranked or complete list of what matters most.
92066 votes against the grain of California. California leans Democratic overall, while 92066 runs about 44 points more Republican. Rural areas vote Republican, and 92066 sits in the bottom quarter on density (about 2%, below 97% of zip codes).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 92066, CA sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 92066 looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in 92066 have more than one occupant per room, above 92% 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.