37179 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 88% of adults in 37179 typically vote, above the U.S. average of about 62%. Among adults in 37179, ~26% vote Democratic, ~62% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How 37179 compares
Among zip codes within 15 miles, 37179 leans more Republican than 5 of 9 neighbors.
37179 runs about 13 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 37179. The north side is the most Republican-leaning (R+54) and the southwest side is the least Republican-leaning (R+27), a spread of about 27 points.
Why 37179 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 37179, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 83% of households in 37179 are family households, about 17 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; 37179, TN sits in the top tenth nationally on this measure.
Why turnout in 37179 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 37179 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 37179 have completed high school, above 92% of zip codes. 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.