84108 leans heavily Democratic by roughly 44 points: about 72% of voters vote Democratic and 28% Republican.
About 72% of adults in 84108 typically vote, above the U.S. average of about 62%. Among adults in 84108, ~52% vote Democratic, ~20% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 84108 compares
Among zip codes within 15 miles, 84108 leans more Democratic than 34 of 40 neighbors.
84108 runs about 66 points more Democratic than Utah as a whole. Utah leans Republican overall, while 84108 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 84108. The west side is the most Democratic-leaning (D+51) and the north side is the least Democratic-leaning (D+29), a spread of about 23 points.
Why 84108 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 84108, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in 84108 hold a bachelor's degree, about 48 points above the U.S. average of 28%. Dense areas vote Democratic, and 84108 sits in the top fifth on density (about 87%, above 86% of zip codes). 84108 runs against the grain of Utah, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 84108, UT sits in the top quarter nationally on this measure.
Why turnout in 84108 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 84108 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 84108 have completed high school, above 94% 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.