Dillon County is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 64% of adults in Dillon County typically vote, near the U.S. average of about 62%. Among adults in Dillon County, ~31% vote Democratic, ~33% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Dillon County compares
Among counties within 50 miles, Dillon County leans more Republican than 5 of 12 neighbors.
Dillon County runs about 13 points more Democratic than South Carolina as a whole.
Politics vary noticeably by city within Dillon County. The east side runs the most Democratic (D+7) and the south side runs the most Republican (R+69), a spread of about 77 points.
Why Dillon County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Dillon County. The lean here lands roughly where demographic data alone would predict.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Dillon County, SC sits below the national average on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Dillon County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Dillon County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 10 points below the South Carolina average of 58%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Marion County, SC D+17
- Marlboro County, SC D+9
- Robeson County, NC R+13
- Scotland County, NC D+2
- Florence County, SC Even
- Darlington County, SC R+8
- Columbus County, NC R+27
- Hoke County, NC D+7
- Richmond County, NC R+15
- Bladen County, NC R+17
Counties with Similar Populations
- Wythe County, VA R+57
- Montgomery County, IL R+44
- Dunklin County, MO R+50
- Bradford County, FL R+50
- Carroll County, AR R+48
- Baker County, FL R+61
- Codington County, SD R+42
- Leflore County, MS D+53
- Jones County, GA R+41
- Copiah County, MS D+6
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.