37658 is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 64% of adults in 37658 typically vote, near the U.S. average of about 62%. Among adults in 37658, ~9% vote Democratic, ~55% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 37658 compares
Among zip codes within 15 miles, 37658 leans more Republican than 9 of 10 neighbors.
37658 runs about 42 points more Republican than Tennessee as a whole.
Why 37658 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 37658, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 87% of residents in 37658 drive to work alone, about 13 points above the U.S. average of 74%. A high white share with below-average college attainment predicts Republican voting, and 37658 fits that profile on both counts.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 37658, TN sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 37658 looks the way it does
Turnout in 37658 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.