29203 is a Democratic stronghold. About 87% of voters here vote Democratic and 13% Republican.
About 60% of adults in 29203 typically vote, near the U.S. average of about 62%. Among adults in 29203, ~52% vote Democratic, ~8% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 29203 compares
Among zip codes within 15 miles, 29203 is the most Democratic-leaning.
29203 runs about 91 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while 29203 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 29203. The east side is the most Democratic-leaning (D+88) and the west side is the least Democratic-leaning (D+54), a spread of about 34 points.
Why 29203 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 29203, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 29203 is about 16%, about 56 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 50% of adults in 29203 have never been married, above 95% of zip codes. 29203 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; 29203, SC sits in the bottom quarter 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 29203 looks the way it does
Renters vote less often than owners. About 50% of households in 29203 rent, about 25 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 33% of adults in 29203 report food insecurity, above 96% 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 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.