84643 is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 53% of adults in 84643 typically vote, below the U.S. average of about 62%. Among adults in 84643, ~10% vote Democratic, ~43% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 84643 compares
Among zip codes within 15 miles, 84643 is the least Republican-leaning.
84643 runs about 41 points more Republican than Utah as a whole.
Why 84643 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 84643, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 1% of residents in 84643 live in densely developed areas, about 31 points below the Utah average of 32%. A high family-household share predicts Republican voting, and about 77% of households in 84643 are family households, above 86% of zip codes.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; 84643, UT sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 84643 looks the way it does
Crowded housing lines up with lower turnout. About 6% of homes in 84643 have more than one occupant per room, above 88% 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 Utah Lieutenant Governor's Office, 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.