92345 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 49% of adults in 92345 typically vote, below the U.S. average of about 62%. Among adults in 92345, ~19% vote Democratic, ~31% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 92345 compares
Among zip codes within 15 miles, 92345 leans more Republican than 10 of 16 neighbors.
92345 runs about 43 points more Republican than California as a whole. California leans Democratic overall, while 92345 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 92345. The southeast side is the most Republican-leaning (R+39) and the north side is the least Republican-leaning (R+13), a spread of about 26 points.
Why 92345 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 92345, not a ranked or complete list of what matters most.
92345 votes against the grain of California. California leans Democratic overall, while 92345 runs about 43 points more Republican. Dense places usually vote Democratic, but 92345 runs against that pattern. Low college attainment predicts Republican voting, and 92345 sits in the bottom quarter (about 11%, below 91% of zip codes).
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 92345, CA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 92345 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 92345 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 29% of adults in 92345 report food insecurity, above 93% of zip codes. Low high-school completion lines up with lower turnout, and about 78% of adults in 92345 have completed high school, below 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.