29939 leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 80% of adults in 29939 typically vote, above the U.S. average of about 62%. Among adults in 29939, ~59% vote Democratic, ~21% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 29939 compares
Among zip codes within 15 miles, 29939 leans more Democratic than 7 of 8 neighbors.
29939 runs about 67 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while 29939 is one of the few Democratic-leaning pockets.
Why 29939 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 29939, not a ranked or complete list of what matters most.
Rural, majority-Black areas of the Southern Black Belt vote Democratic, against the usual rural pattern. About 78% of residents in 29939 are Black or African American, about 48 points above the South Carolina average of 30%. A high never-married share predicts Democratic voting, and about 46% of adults in 29939 have never been married, above 92% of zip codes. 29939 runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 29939, SC sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 29939 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 29939 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 45%, about 13 points below the South Carolina average of 58%. 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 South Carolina State Election Commission, 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.