Gallia County is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 73% of adults in Gallia County typically vote, above the U.S. average of about 62%. Among adults in Gallia County, ~16% vote Democratic, ~57% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Gallia County compares
Among counties within 50 miles, Gallia County leans more Republican than 10 of 18 neighbors.
Gallia County runs about 45 points more Republican than Ohio as a whole.
Politics vary noticeably by city within Gallia County. The southwest side is the most Republican-leaning (R+65) and the east side is the least Republican-leaning (R+48), a spread of about 17 points.
Why Gallia County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Gallia County. The lean here lands roughly where demographic data alone would predict.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Gallia County, OH 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 Gallia County looks the way it does
Turnout in Gallia 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
- Mason County, WV R+59
- Meigs County, OH R+58
- Jackson County, OH R+58
- Lawrence County, OH R+50
- Cabell County, WV R+19
- Jackson County, WV R+57
- Vinton County, OH R+58
- Putnam County, WV R+46
- Greenup County, KY R+52
- Boyd County, KY R+38
Counties with Similar Populations
- Marion County, SC D+17
- Grimes County, TX R+42
- Orange County, VT Even
- Carroll County, VA R+63
- Morgan County, CO R+37
- Marion County, AL R+79
- Hancock County, WV R+42
- Neshoba County, MS R+31
- Decatur County, GA R+10
- Mason County, MI R+20
Sources and methodology
Precinct-level voting records used to fit the model come from Ohio Secretary of State, Elections, 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.