29621 leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 75% of adults in 29621 typically vote, above the U.S. average of about 62%. Among adults in 29621, ~26% vote Democratic, ~49% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 29621 compares
Among zip codes within 15 miles, 29621 leans more Republican than 1 of 10 neighbors.
29621 runs about 14 points more Republican than South Carolina as a whole.
Politics vary noticeably by block within 29621. The south side runs the most Democratic (Even) and the north side runs the most Republican (R+49), a spread of about 51 points.
Why 29621 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 29621. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 29621, SC sits above the national average on this measure.
Why turnout in 29621 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 29621 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 64%, above 59% 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.