84057 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 61% of adults in 84057 typically vote, near the U.S. average of about 62%. Among adults in 84057, ~23% vote Democratic, ~38% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 84057 compares
Among zip codes within 15 miles, 84057 leans more Republican than 5 of 17 neighbors.
Politically, 84057 sits close to the rest of Utah.
Politics vary noticeably by block within 84057. The north side is the most Republican-leaning (R+34) and the southwest side is the least Republican-leaning (R+15), a spread of about 19 points.
Why 84057 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 84057, not a ranked or complete list of what matters most.
84057 votes Republican even though it is densely developed (more than 99%, far above the Utah average of 32%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in 84057 are family households, above 79% of zip codes.
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as 84057, UT does.
Why turnout in 84057 looks the way it does
Renters vote less often than owners. About 36% of households in 84057 rent, about 11 points above the U.S. average of 25%. Strong routine healthcare access lines up with higher turnout, and 84057 sits in the top quarter on routine-care measures. 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.