Effingham County leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 82% of adults in Effingham County typically vote, above the U.S. average of about 62%. Among adults in Effingham County, ~22% vote Democratic, ~60% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Effingham County compares
Among counties within 50 miles, Effingham County is the most Republican-leaning.
Effingham County runs about 44 points more Republican than Georgia as a whole.
Politics vary noticeably by city within Effingham County. The southwest side is the most Republican-leaning (R+64) and the southeast side is the least Republican-leaning (R+34), a spread of about 29 points.
Why Effingham County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Effingham County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 83% of residents in Effingham County drive to work alone, about 9 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 75% of households in Effingham County are family households, above 95% of counties.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Effingham County, GA sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Effingham County looks the way it does
Turnout in Effingham County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Jasper County, SC Even
- Chatham County, GA D+26
- Bryan County, GA R+35
- Bulloch County, GA R+10
- Beaufort County, SC R+9
- Liberty County, GA D+16
- Screven County, GA R+23
- Evans County, GA R+33
- Hampton County, SC D+9
- Long County, GA R+26
Counties with Similar Populations
- Carbon County, PA R+35
- Columbia County, PA R+32
- Salem County, NJ R+12
- Nacogdoches County, TX R+29
- Coos County, OR R+10
- Pulaski County, KY R+59
- Hamblen County, TN R+51
- Rutherford County, NC R+46
- Isabella County, MI R+3
- Chaves County, NM R+37
Sources and methodology
Precinct-level voting records used to fit the model come from Georgia Elections Division, 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.