84621 is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 18% of adults in 84621 typically vote, below the U.S. average of about 62%. Among adults in 84621, ~3% vote Democratic, ~15% Republican, and ~82% don't vote. The map below shows estimated turnout by block group.
How 84621 compares
Among zip codes within 15 miles, 84621 leans more Republican than 5 of 8 neighbors.
84621 runs about 51 points more Republican than Utah as a whole.
Why 84621 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 84621, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in 84621 hold a bachelor's degree, about 25 points below the Utah average of 31%. Rural areas vote Republican, and 84621 sits in the bottom quarter on density (about 1%, below 98% of zip codes). A high family-household share predicts Republican voting, and about 89% of households in 84621 are family households, in the top fraction of zip codes.
Population density and Republican lean
Places with low population density tend to lean Republican; 84621, UT sits in the bottom quarter nationally on this measure.
Why turnout in 84621 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 84621 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 38% of households in 84621 rent, compared to around 18% in nearby zip codes. Crowded housing lines up with lower turnout, and about 9% of homes in 84621 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 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.