37730 is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 58% of adults in 37730 typically vote, near the U.S. average of about 62%. Among adults in 37730, ~7% vote Democratic, ~51% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 37730 compares
Among zip codes within 15 miles, 37730 leans more Republican than 6 of 10 neighbors.
37730 runs about 46 points more Republican than Tennessee as a whole.
Why 37730 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 37730, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 37730, about 98% of residents are non-Hispanic white, about 26 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 6 points below the Tennessee average of 22%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 37730, 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 37730 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 37730 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 7 points below the Tennessee average of 56%. Low high-school completion lines up with lower turnout, and about 76% of adults in 37730 have completed high school, below 95% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
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.