84315 is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 93% of adults in 84315 typically vote, above the U.S. average of about 62%. Among adults in 84315, ~22% vote Democratic, ~71% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How 84315 compares
Among zip codes within 15 miles, 84315 is the most Republican-leaning.
84315 runs about 31 points more Republican than Utah as a whole.
Politics vary noticeably by block within 84315. The north side is the most Republican-leaning (R+58) and the east side is the least Republican-leaning (R+45), a spread of about 13 points.
Why 84315 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 84315, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 89% of households in 84315 are family households, about 22 points above the U.S. average of 67%.
Renting and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 84315, UT sits in the bottom tenth nationally on this measure.
Why turnout in 84315 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 84315 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 96% of households in 84315 own their home, compared to around 70% in nearby 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.