37687 is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 63% of adults in 37687 typically vote, near the U.S. average of about 62%. Among adults in 37687, ~9% vote Democratic, ~54% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How 37687 compares
Among zip codes within 15 miles, 37687 is the most Republican-leaning.
37687 runs about 43 points more Republican than Tennessee as a whole.
Why 37687 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 37687, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 37687, about 97% of residents are non-Hispanic white, about 24 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 5 points below the Tennessee average of 22%. A high family-household share predicts Republican voting, and about 74% of households in 37687 are family households, above 75% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 37687, TN sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 37687 looks the way it does
Homeowners vote more often than renters. About 91% of households in 37687 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.