37042 is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 55% of adults in 37042 typically vote, below the U.S. average of about 62%. Among adults in 37042, ~27% vote Democratic, ~28% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 37042 compares
Among zip codes within 15 miles, 37042 sits roughly in the middle of the political spectrum, with 1 neighbors leaning further in the place's direction and 12 leaning the other way.
37042 runs about 28 points more Democratic than Tennessee as a whole.
Politics vary noticeably by block within 37042. The northwest side runs the most Democratic (D+10) and the southwest side runs the most Republican (R+29), a spread of about 39 points.
Why 37042 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 37042. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 37042, TN sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 37042 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 37042 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 40% of households in 37042 rent, above 86% 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.