95301 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 47% of adults in 95301 typically vote, below the U.S. average of about 62%. Among adults in 95301, ~20% vote Democratic, ~27% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 95301 compares
Among zip codes within 15 miles, 95301 leans more Republican than 6 of 11 neighbors.
95301 runs about 34 points more Republican than California as a whole. California leans Democratic overall, while 95301 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95301. The southwest side is the most split-leaning (R+36) and the west side is the least split-leaning (R+2), a spread of about 34 points.
Why 95301 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 95301, not a ranked or complete list of what matters most.
95301 votes Republican even though it is densely developed (about 77%, well above the California average of 58%). Here a high share of family households outweighs the Democratic lean that density usually predicts. Low college attainment predicts Republican voting, and 95301 sits in the bottom quarter (about 15%, below 81% of zip codes). 95301 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as 95301, CA does.
Why turnout in 95301 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95301 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 43% of households in 95301 rent, about 18 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 26% of adults in 95301 report food insecurity, above 90% 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.