85355 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 87% of adults in 85355 typically vote, above the U.S. average of about 62%. Among adults in 85355, ~29% vote Democratic, ~58% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How 85355 compares
Among zip codes within 15 miles, 85355 leans more Republican than 27 of 28 neighbors.
85355 runs about 29 points more Republican than Arizona as a whole.
Politics vary noticeably by block within 85355. The south side is the most Republican-leaning (R+42) and the north side is the least Republican-leaning (R+29), a spread of about 13 points.
Why 85355 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 85355, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 82% of households in 85355 are family households, about 15 points above the U.S. average of 67%. Dense places usually vote Democratic, but 85355 runs against that pattern.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 85355, AZ sits in the top tenth nationally on this measure.
Why turnout in 85355 looks the way it does
Homeowners vote more often than renters. About 92% of households in 85355 own their home, about 19 points above the Arizona average of 73%. 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.