95720 leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 66% of adults in 95720 typically vote, near the U.S. average of about 62%. Among adults in 95720, ~28% vote Democratic, ~38% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 95720 compares
Among zip codes within 15 miles, 95720 leans more Republican than 3 of 4 neighbors.
95720 runs about 36 points more Republican than California as a whole. California leans Democratic overall, while 95720 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95720. The south side is the most Republican-leaning (R+28) and the north side is the least Republican-leaning (R+14), a spread of about 15 points.
Why 95720 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 95720, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in 95720 live in densely developed areas, about 55 points below the California average of 58%. A high family-household share predicts Republican voting, and about 75% of households in 95720 are family households, above 80% of zip codes. 95720 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; 95720, CA sits in the bottom tenth nationally on this measure.
Why turnout in 95720 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 95720 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in 95720 own their home, about 15 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and more than 99% of adults in 95720 have completed high school, in the top fraction 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.