Columbiana County leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 75% of adults in Columbiana County typically vote, above the U.S. average of about 62%. Among adults in Columbiana County, ~21% vote Democratic, ~54% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Columbiana County compares
Among counties within 50 miles, Columbiana County leans more Republican than 14 of 17 neighbors.
Columbiana County runs about 34 points more Republican than Ohio as a whole.
Politics vary noticeably by city within Columbiana County. The southwest side is the most Republican-leaning (R+59) and the southeast side is the least Republican-leaning (R+39), a spread of about 20 points.
Why Columbiana 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 Columbiana 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 Columbiana County, about 92% of residents are non-Hispanic white, about 20 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 6 points below the Ohio average of 23%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Columbiana County, OH sits above the national average on this measure.
Why turnout in Columbiana County looks the way it does
Turnout in Columbiana County sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Mahoning County, OH Even
- Hancock County, WV R+42
- Carroll County, OH R+55
- Beaver County, PA R+19
- Lawrence County, PA R+28
- Jefferson County, OH R+35
- Trumbull County, OH R+17
- Brooke County, WV R+42
- Stark County, OH R+18
- Harrison County, OH R+56
Counties with Similar Populations
- Allen County, OH R+32
- Nevada County, CA D+11
- Highlands County, FL R+33
- Maury County, TN R+39
- Whitfield County, GA R+38
- Craven County, NC R+15
- Laramie County, WY R+23
- Daviess County, KY R+31
- DeKalb County, IL D+3
- Etowah County, AL R+49
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.