Ohio County is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 83% of adults in Ohio County typically vote, above the U.S. average of about 62%. Among adults in Ohio County, ~17% vote Democratic, ~66% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Ohio County compares
Among counties within 50 miles, Ohio County leans more Republican than 19 of 27 neighbors.
Ohio County runs about 39 points more Republican than Indiana as a whole.
Politics vary noticeably by city within Ohio County. The southwest side is the most Republican-leaning (R+64) and the east side is the least Republican-leaning (R+47), a spread of about 17 points.
Why Ohio 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 Ohio County, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Ohio County, about 95% of residents are non-Hispanic white, about 22 points above the U.S. average of 72%; about 18% of adults hold a bachelor's degree, about 10 points below the U.S. average of 28%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Ohio County, IN sits in the bottom tenth 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 Ohio County looks the way it does
Homeowners vote more often than renters. About 81% of households in Ohio County own their home, about 6 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 94% of adults in Ohio County have completed high school, above 84% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Switzerland County, IN R+63
- Boone County, KY R+28
- Dearborn County, IN R+53
- Gallatin County, KY R+57
- Kenton County, KY R+14
- Ripley County, IN R+59
- Carroll County, KY R+51
- Grant County, KY R+62
- Campbell County, KY R+16
- Hamilton County, OH D+21
Counties with Similar Populations
- Sherman County, KS R+66
- Crowley County, CO R+47
- Essex County, VT R+31
- Benson County, ND D+2
- Pondera County, MT R+35
- Taylor County, IA R+50
- Chouteau County, MT R+24
- Cumberland County, KY R+67
- Sullivan County, MO R+56
- Miller County, GA R+44
Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.