38457 is a Republican stronghold. About 11% of voters here vote Democratic and 89% Republican.
About 68% of adults in 38457 typically vote, above the U.S. average of about 62%. Among adults in 38457, ~7% vote Democratic, ~61% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 38457 compares
Among zip codes within 15 miles, 38457 leans more Republican than 6 of 9 neighbors.
38457 runs about 47 points more Republican than Tennessee as a whole.
Why 38457 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 38457, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 92% of residents in 38457 drive to work alone, about 19 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 38457 sits in the bottom quarter (about 10%, below 95% of zip codes). A high family-household share predicts Republican voting, and about 76% of households in 38457 are family households, above 83% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 38457, TN sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 38457 looks the way it does
Limited routine healthcare access lines up with lower turnout, and 38457 sits in the bottom 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 Tennessee Secretary of State, Division of 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.