37118 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 81% of adults in 37118 typically vote, above the U.S. average of about 62%. Among adults in 37118, ~16% vote Democratic, ~65% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How 37118 compares
Among zip codes within 15 miles, 37118 leans more Republican than 5 of 11 neighbors.
37118 runs about 29 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 37118. The northwest side is the most Republican-leaning (R+67) and the east side is the least Republican-leaning (R+55), a spread of about 11 points.
Why 37118 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 37118, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 88% of households in 37118 are family households, about 22 points above the U.S. average of 67%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 37118, 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 37118 looks the way it does
Homeowners vote more often than renters. About 92% of households in 37118 own their home, about 14 points above the Tennessee average of 77%. 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.