37127 leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 69% of adults in 37127 typically vote, above the U.S. average of about 62%. Among adults in 37127, ~25% vote Democratic, ~44% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How 37127 compares
Among zip codes within 15 miles, 37127 leans more Republican than 4 of 11 neighbors.
Politically, 37127 sits close to the rest of Tennessee.
Politics vary noticeably by block within 37127. The north side runs the most Democratic (D+3) and the southeast side runs the most Republican (R+47), a spread of about 49 points.
Why 37127 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 37127, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 76% of households in 37127 are family households, about 9 points above the U.S. average of 67%.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 37127, TN sits in the top quarter nationally on this measure.
Why turnout in 37127 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 37127 have completed high school, about 8 points above the Tennessee average of 88%. 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.