38034 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 58% of adults in 38034 typically vote, near the U.S. average of about 62%. Among adults in 38034, ~9% vote Democratic, ~49% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 38034 compares
Among zip codes within 15 miles, 38034 leans more Republican than 6 of 8 neighbors.
38034 runs about 38 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 38034. The northeast side is the most Republican-leaning (R+73) and the south side is the least Republican-leaning (R+61), a spread of about 11 points.
Why 38034 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 38034, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 88% of residents in 38034 drive to work alone, about 15 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 38034 sits in the bottom quarter (about 12%, below 90% of zip codes).
Park access and Republican lean
Places with low park coverage tend to lean Republican; 38034, TN sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 38034 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 38034 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Low high-school completion lines up with lower turnout, and about 86% of adults in 38034 have completed high school, below 76% 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 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.