38339 is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 66% of adults in 38339 typically vote, near the U.S. average of about 62%. Among adults in 38339, ~9% vote Democratic, ~57% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 38339 compares
Among zip codes within 15 miles, 38339 leans more Republican than 2 of 8 neighbors.
38339 runs about 43 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 38339. The north side is the most Republican-leaning (R+75) and the southwest side is the least Republican-leaning (R+65), a spread of about 10 points.
Why 38339 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 38339, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 76% of households in 38339 are family households, about 10 points above the U.S. average of 67%. Low college attainment predicts Republican voting, and 38339 sits in the bottom quarter (about 15%, below 80% of zip codes).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 38339, TN sits in the bottom quarter 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 38339 looks the way it does
Turnout in 38339 sits close to the national pattern. 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.