37075 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 78% of adults in 37075 typically vote, above the U.S. average of about 62%. Among adults in 37075, ~26% vote Democratic, ~52% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 37075 compares
Among zip codes within 15 miles, 37075 leans more Republican than 18 of 22 neighbors.
Politically, 37075 sits close to the rest of Tennessee.
Politics vary noticeably by block within 37075. The north side is the most Republican-leaning (R+44) and the west side is the least Republican-leaning (R+25), a spread of about 19 points.
Why 37075 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 37075, not a ranked or complete list of what matters most.
37075 votes Republican even though it is densely developed (about 66%, far above the Tennessee average of 21%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 37075, TN sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 37075 looks the way it does
Turnout in 37075 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.