85930 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 48% of adults in 85930 typically vote, below the U.S. average of about 62%. Among adults in 85930, ~33% vote Democratic, ~15% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.
How 85930 compares
85930 sits in a sparsely populated area with few comparable zip codes nearby.
85930 runs about 41 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while 85930 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 85930. The west side is the most Democratic-leaning (D+41) and the south side is the least Democratic-leaning (D+15), a spread of about 26 points.
Why 85930 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 85930, not a ranked or complete list of what matters most.
85930 votes against the grain of Arizona. Arizona leans Republican overall, while 85930 runs about 41 points more Democratic. A high never-married share predicts Democratic voting, and about 39% of adults in 85930 have never been married, above 86% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 85930, AZ sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 85930 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85930 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 25% of adults in 85930 report food insecurity, above 89% 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.