37219 leans heavily Democratic by roughly 46 points: about 73% of voters vote Democratic and 27% Republican.
About 56% of adults in 37219 typically vote, below the U.S. average of about 62%. Among adults in 37219, ~41% vote Democratic, ~15% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 37219 compares
Among zip codes within 15 miles, 37219 leans more Democratic than 24 of 32 neighbors.
37219 runs about 76 points more Democratic than Tennessee as a whole. Tennessee leans Republican overall, while 37219 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 37219. The east side is the most Democratic-leaning (D+62) and the northwest side is the least Democratic-leaning (D+37), a spread of about 25 points.
Why 37219 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 37219, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 37219 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 37219 sits in the top quarter (about 86%, in the top fraction of zip codes). 37219 runs against the grain of Tennessee, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 37219, TN sits in the top tenth nationally on this measure.
Why turnout in 37219 looks the way it does
Renters vote less often than owners. About 79% of households in 37219 rent, about 54 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 37219 sits in the top 15% on a violent-crime measure. 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.