29409 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 39% of adults in 29409 typically vote, below the U.S. average of about 62%. Among adults in 29409, ~27% vote Democratic, ~12% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 29409 compares
Among zip codes within 15 miles, 29409 leans more Democratic than 18 of 21 neighbors.
29409 runs about 56 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while 29409 is one of the few Democratic-leaning pockets.
Why 29409 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 29409, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 75% of adults in 29409 hold a bachelor's degree, about 46 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 85% of adults in 29409 have never been married, in the top fraction of zip codes. 29409 runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 29409, SC sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 29409 looks the way it does
Renters vote less often than owners. About 46% of households in 29409 rent, about 21 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 98% of adults in 29409 have completed high school, 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.