93641 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 60% of adults in 93641 typically vote, near the U.S. average of about 62%. Among adults in 93641, ~16% vote Democratic, ~45% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 93641 compares
Among zip codes within 15 miles, 93641 leans more Republican than 4 of 5 neighbors.
93641 runs about 69 points more Republican than California as a whole. California leans Democratic overall, while 93641 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93641. The southeast side is the most Republican-leaning (R+55) and the northwest side is the least Republican-leaning (R+42), a spread of about 13 points.
Why 93641 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 93641, not a ranked or complete list of what matters most.
93641 votes against the grain of California. California leans Democratic overall, while 93641 runs about 69 points more Republican. Rural areas vote Republican, and 93641 sits in the bottom quarter on density (about 4%, below 90% of zip codes).
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as 93641, CA does.
Why turnout in 93641 looks the way it does
Renters vote less often than owners. About 47% of households in 93641 rent, about 22 points above the U.S. average of 25%. 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.