38643 leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 75% of adults in 38643 typically vote, above the U.S. average of about 62%. Among adults in 38643, ~55% vote Democratic, ~20% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 38643 compares
Among zip codes within 15 miles, 38643 leans more Democratic than 5 of 7 neighbors.
38643 runs about 71 points more Democratic than Mississippi as a whole. Mississippi leans Republican overall, while 38643 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 38643. The northwest side runs the most Democratic (D+75) and the southeast side runs the most Republican (R+52), a spread of about 126 points.
Why 38643 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 38643, not a ranked or complete list of what matters most.
38643 votes against the grain of Mississippi. Mississippi leans Republican overall, while 38643 runs about 71 points more Democratic. A high never-married share predicts Democratic voting, and about 38% of adults in 38643 have never been married, above 85% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 38643, MS sits above the national average 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 38643 looks the way it does
Limited routine healthcare access lines up with lower turnout, and 38643 sits in the bottom quarter on routine-care measures. 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 Mississippi Secretary of State, 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.