85255 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 91% of adults in 85255 typically vote, above the U.S. average of about 62%. Among adults in 85255, ~39% vote Democratic, ~52% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How 85255 compares
Among zip codes within 15 miles, 85255 leans more Republican than 25 of 32 neighbors.
85255 runs about 8 points more Republican than Arizona as a whole.
Politics vary noticeably by block within 85255. The north side is the most Republican-leaning (R+25) and the south side is the least Republican-leaning (R+7), a spread of about 17 points.
Why 85255 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 85255, not a ranked or complete list of what matters most.
85255 votes Republican even though it is densely developed (about 78%, far above the Arizona average of 39%). Here an older population outweighs the Democratic lean that density usually predicts.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; 85255, AZ sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 85255 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 85255 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 74%, about 14 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 85255 have completed high school, above 96% 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.