Hanahan leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 68% of adults in Hanahan typically vote, above the U.S. average of about 62%. Among adults in Hanahan, ~27% vote Democratic, ~41% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How Hanahan compares
Among cities within 25 miles, Hanahan leans more Republican than 34 of 46 neighbors.
Politically, Hanahan sits close to the rest of South Carolina.
Politics vary noticeably by neighborhood within Hanahan. The southwest side is the most Republican-leaning (R+30) and the west side is the least Republican-leaning (R+13), a spread of about 17 points.
Why Hanahan leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Hanahan, not a ranked or complete list of what matters most.
Hanahan votes Republican even though it is densely developed (about 66%, far above the South Carolina average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Hanahan, SC sits in the top tenth nationally on this measure.
Why turnout in Hanahan looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Hanahan is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- North Charleston, SC D+37
- Charleston Afb, SC D+11
- Goose Creek, SC R+5
- Ladson, SC D+3
- Charleston, SC Even
- Lincolnville, SC D+19
- Wando, SC R+2
- Red Top, SC R+4
- Summerville, SC R+17
- Pimlico, SC R+55
Cities with Similar Populations
- Alsip, IL D+17
- Ionia, MI R+15
- Jackson, GA R+43
- Canton, MS D+47
- Connersville, IN R+53
- Iselin, NJ D+2
- Mayfield Heights, OH D+21
- Germantown, WI R+13
- Forest Park, OH D+58
- Madison, IN R+39
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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.