85145 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 53% of adults in 85145 typically vote, below the U.S. average of about 62%. Among adults in 85145, ~15% vote Democratic, ~38% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 85145 compares
85145 sits in a sparsely populated area with few comparable zip codes nearby.
85145 runs about 37 points more Republican than Arizona as a whole.
Why 85145 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 85145, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 84% of households in 85145 are family households, about 17 points above the U.S. average of 67%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 85145, AZ sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 85145 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85145 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 9% of homes in 85145 have more than one occupant per room, above 95% 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.