29406 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 47% of adults in 29406 typically vote, below the U.S. average of about 62%. Among adults in 29406, ~32% vote Democratic, ~15% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 29406 compares
Among zip codes within 15 miles, 29406 leans more Democratic than 18 of 22 neighbors.
29406 runs about 53 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while 29406 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 29406. The southeast side is the most Democratic-leaning (D+50) and the northwest side is the least Democratic-leaning (D+25), a spread of about 25 points.
Why 29406 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 29406, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 88% of residents in 29406 live in densely developed areas, about 52 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 45% of adults in 29406 have never been married, above 92% of zip codes. 29406 runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 29406, SC sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 29406 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 29406 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 57% of households in 29406 rent, compared to around 42% in nearby zip codes. High food insecurity lines up with lower turnout, and about 28% of adults in 29406 report food insecurity, above 93% 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.