37212 is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.
About 55% of adults in 37212 typically vote, below the U.S. average of about 62%. Among adults in 37212, ~42% vote Democratic, ~13% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 37212 compares
Among zip codes within 15 miles, 37212 leans more Democratic than 28 of 33 neighbors.
37212 runs about 82 points more Democratic than Tennessee as a whole. Tennessee leans Republican overall, while 37212 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 37212. The northeast side is the most Democratic-leaning (D+61) and the north side is the least Democratic-leaning (D+40), a spread of about 21 points.
Why 37212 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 37212, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 37212 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 37212 sits in the top quarter (about 68%, above 97% of zip codes). 37212 runs against the grain of Tennessee, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 37212, TN sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 37212 looks the way it does
Renters vote less often than owners. About 60% of households in 37212 rent, about 35 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 83% of adults in 37212 have completed high school, below 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.