84101 leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 50% of adults in 84101 typically vote, below the U.S. average of about 62%. Among adults in 84101, ~37% vote Democratic, ~13% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 84101 compares
Among zip codes within 15 miles, 84101 leans more Democratic than 36 of 40 neighbors.
84101 runs about 69 points more Democratic than Utah as a whole. Utah leans Republican overall, while 84101 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 84101. The north side is the most Democratic-leaning (D+52) and the west side is the least Democratic-leaning (D+38), a spread of about 14 points.
Why 84101 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 84101, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 84101 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 84101 sits in the top quarter (about 50%, above 89% of zip codes). 84101 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; 84101, UT sits in the top tenth nationally on this measure.
Why turnout in 84101 looks the way it does
Renters vote less often than owners. About 80% of households in 84101 rent, about 55 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 84101 sits in the top 15% on a violent-crime measure. 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.