Dillon, SC Political Map | Democrat & Republican Areas in Dillon

By the BestNeighborhood data science team. Last updated May 2026.

Dillon leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 65% of adults in Dillon typically vote, near the U.S. average of about 62%. Among adults in Dillon, ~34% vote Democratic, ~30% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.

How Dillon compares

Among cities within 25 miles, Dillon leans more Democratic than 43 of 53 neighbors.

Dillon runs about 25 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Dillon is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Dillon. The west side runs the most Democratic (D+50) and the east side runs the most Republican (R+37), a spread of about 87 points.

Why Dillon 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 Dillon, not a ranked or complete list of what matters most.

Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Dillon is about 39%, about 33 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 44% of adults in Dillon have never been married, above 96% of cities. Dillon runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Dillon, SC sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in Dillon looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Dillon 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 11 points below the South Carolina average of 58%. Learn more about the findings and methodology on the political spectrum map.

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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.