Sun Valley leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 46% of adults in Sun Valley typically vote, below the U.S. average of about 62%. Among adults in Sun Valley, ~27% vote Democratic, ~19% Republican, and ~54% don't vote. The map below shows estimated turnout by block group.
How Sun Valley compares
Among cities within 25 miles, Sun Valley leans more Democratic than 25 of 103 neighbors.
Politically, Sun Valley sits close to the rest of California.
Politics vary noticeably by neighborhood within Sun Valley. The northwest side runs the most Democratic (D+29) and the northeast side runs the most Republican (R+8), a spread of about 37 points.
Why Sun Valley leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Sun Valley, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 88% of residents in Sun Valley live in densely developed areas, about 52 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 40% of adults in Sun Valley have never been married, above 93% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Sun Valley, CA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Sun Valley looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Sun Valley 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 Sun Valley rent, about 18 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 23% of adults in Sun Valley report food insecurity, above 88% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- North Hollywood, CA D+32
- Sunland, CA Even
- Panorama City, CA D+23
- Pacoima, CA D+34
- Burbank, CA D+28
- Valley Village, CA D+44
- Tujunga, CA D+4
- North Hills, CA D+26
- Van Nuys, CA D+32
- San Fernando, CA D+33
Cities with Similar Populations
- Lockport, IL R+12
- Troy, OH R+33
- Melrose Park, IL D+22
- Williston, ND R+58
- Bethel Park, PA D+5
- Burlington, NJ D+36
- Roseburg, OR R+20
- North Olmsted, OH Even
- Westmont, CA D+61
- Fair Oaks, VA D+40
All Local Stats
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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.