38125 is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.
About 60% of adults in 38125 typically vote, near the U.S. average of about 62%. Among adults in 38125, ~51% vote Democratic, ~9% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 38125 compares
Among zip codes within 15 miles, 38125 leans more Democratic than 26 of 32 neighbors.
38125 runs about 99 points more Democratic than Tennessee as a whole. Tennessee leans Republican overall, while 38125 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 38125. The southwest side is the most Democratic-leaning (D+81) and the northeast side is the least Democratic-leaning (D+21), a spread of about 59 points.
Why 38125 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 38125, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 38125 is about 11%, about 61 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 45% of adults in 38125 have never been married, above 92% of zip codes. 38125 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; 38125, TN sits in the top quarter nationally on this measure.
Why turnout in 38125 looks the way it does
Renters vote less often than owners. About 40% of households in 38125 rent, about 15 points above the U.S. average of 25%. 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.