92003 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 75% of adults in 92003 typically vote, above the U.S. average of about 62%. Among adults in 92003, ~32% vote Democratic, ~43% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 92003 compares
Among zip codes within 15 miles, 92003 leans more Republican than 18 of 23 neighbors.
92003 runs about 33 points more Republican than California as a whole. California leans Democratic overall, while 92003 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 92003. The west side is the most Republican-leaning (R+24) and the north side is the least Republican-leaning (R+6), a spread of about 18 points.
Why 92003 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 92003, not a ranked or complete list of what matters most.
92003 votes against the grain of California. California leans Democratic overall, while 92003 runs about 33 points more Republican.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; 92003, CA sits in the bottom tenth nationally on this measure.
Why turnout in 92003 looks the way it does
Turnout in 92003 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.