85658 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 85% of adults in 85658 typically vote, above the U.S. average of about 62%. Among adults in 85658, ~39% vote Democratic, ~46% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 85658 compares
Among zip codes within 15 miles, 85658 leans more Republican than 7 of 11 neighbors.
Politically, 85658 sits close to the rest of Arizona.
Politics vary noticeably by block within 85658. The southwest side runs the most Democratic (Even) and the northwest side runs the most Republican (R+48), a spread of about 50 points.
Why 85658 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 85658, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in 85658 are family households, about 11 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 85658, AZ sits in the top quarter 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 85658 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 85658 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 85658 have completed high school, above 81% 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 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.