37803 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 84% of adults in 37803 typically vote, above the U.S. average of about 62%. Among adults in 37803, ~22% vote Democratic, ~62% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 37803 compares
Among zip codes within 15 miles, 37803 leans more Republican than 5 of 12 neighbors.
37803 runs about 19 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 37803. The southwest side is the most Republican-leaning (R+64) and the north side is the least Republican-leaning (R+31), a spread of about 33 points.
Why 37803 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 37803. The lean here lands roughly where demographic data alone would predict.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; 37803, TN sits in the bottom quarter nationally on this measure.
Why turnout in 37803 looks the way it does
Turnout in 37803 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.