Sun Valley leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 48% of adults in Sun Valley typically vote, below the U.S. average of about 62%. Among adults in Sun Valley, ~26% vote Democratic, ~22% Republican, and ~52% 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 4 of 5 neighbors.
Sun Valley runs about 13 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while Sun Valley is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Sun Valley. The northwest side runs the most Democratic (D+56) and the southwest side runs the most Republican (R+13), a spread of about 69 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.
Areas with many never-married adults vote Democratic. About 55% of adults in Sun Valley have never been married, far above similar-sized cities (around 22%). Sun Valley runs against the grain of Arizona, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Sun Valley, AZ sits in the bottom 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 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. The dental-visit rate here is about 47%, about 8 points below the Arizona average of 54%. Renters vote less often than owners, and about 33% of households in Sun Valley rent, above 89% of cities. High food insecurity lines up with lower turnout, and about 32% of adults in Sun Valley report food insecurity, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Holbrook, AZ R+17
- Petrified Forest Natl Pk, AZ R+31
- Paulcell Place, AZ R+23
- Joseph City, AZ R+65
- Indian Wells, AZ D+52
- Woodruff, AZ R+55
- Dilkon, AZ D+51
- Greasewood, AZ D+56
- Navajo, AZ D+16
- Hunt, AZ R+47
Cities with Similar Populations
- Booneville, TN R+73
- Haynes, ND R+62
- Heathsville, IL R+67
- Morehouseville, NY R+42
- Bransford, TN R+63
- Killarney Beach, MI R+29
- North Blandford, MA Even
- West Lewistown, MT R+60
- West Hebron, NY R+27
- Pottawattamie Park, IN D+19
Sources and methodology
Precinct-level voting records used to fit the model come from Arizona 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.