94949 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 71% of adults in 94949 typically vote, above the U.S. average of about 62%. Among adults in 94949, ~48% vote Democratic, ~23% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 94949 compares
Among zip codes within 15 miles, 94949 leans more Democratic than 5 of 31 neighbors.
94949 runs about 16 points more Democratic than California as a whole.
Politics vary noticeably by block within 94949. The south side is the most Democratic-leaning (D+49) and the northeast side is the least Democratic-leaning (D+16), a spread of about 33 points.
Why 94949 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 94949, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 50% of adults in 94949 hold a bachelor's degree, about 22 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 94949 is about 55%, about 17 points below the U.S. average of 72%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 94949, CA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 94949 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 94949 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 72%, about 12 points above the U.S. average of 60%. 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.