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

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

Fairfax leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.

 

About 47% of adults in Fairfax typically vote, below the U.S. average of about 62%. Among adults in Fairfax, ~32% vote Democratic, ~15% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.

How Fairfax compares

Among cities within 25 miles, Fairfax leans more Democratic than 40 of 44 neighbors.

Fairfax runs about 56 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Fairfax is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Fairfax. The south side is the most Democratic-leaning (D+53) and the northeast side is the least Democratic-leaning (D+31), a spread of about 23 points.

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

Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Fairfax is about 23%, about 50 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 46% of adults in Fairfax have never been married, above 97% of cities. Fairfax runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.

Never-married share, developed land, and voter turnout

Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as Fairfax, SC does.

Why turnout in Fairfax looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Fairfax 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 47%, about 11 points below the South Carolina average of 58%. Renters vote less often than owners, and about 37% of households in Fairfax rent, above 92% of cities. High food insecurity lines up with lower turnout, and about 30% of adults in Fairfax report food insecurity, above 95% of cities. 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.