38351 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 70% of adults in 38351 typically vote, above the U.S. average of about 62%. Among adults in 38351, ~14% vote Democratic, ~56% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How 38351 compares
Among zip codes within 15 miles, 38351 is the least Republican-leaning.
38351 runs about 31 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 38351. The southwest side is the most Republican-leaning (R+72) and the south side is the least Republican-leaning (R+48), a spread of about 23 points.
Why 38351 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 38351, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 38351 drive to work alone, about 10 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 38351 sits in the bottom quarter (about 16%, below 76% of zip codes).
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 38351, TN sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 38351 looks the way it does
Turnout in 38351 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.