94530 is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.
About 68% of adults in 94530 typically vote, above the U.S. average of about 62%. Among adults in 94530, ~58% vote Democratic, ~10% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 94530 compares
Among zip codes within 15 miles, 94530 leans more Democratic than 58 of 86 neighbors.
94530 runs about 49 points more Democratic than California as a whole.
Politics vary noticeably by block within 94530. The east side is the most Democratic-leaning (D+77) and the west side is the least Democratic-leaning (D+59), a spread of about 18 points.
Why 94530 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 94530, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 99% of residents in 94530 live in densely developed areas, about 62 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 94530 sits in the top quarter (about 67%, above 97% of zip codes).
Population density and Democratic lean
Places with high population density tend to lean Democratic; 94530, CA sits in the top tenth nationally on this measure.
Why turnout in 94530 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 94530 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%. High high-school completion lines up with higher turnout, and about 96% of adults in 94530 have completed high school, above 85% 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.