Grand River, OH Political Map | Democrat & Republican Areas in Grand River

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

Grand River leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.

 

About 67% of adults in Grand River typically vote, near the U.S. average of about 62%. Among adults in Grand River, ~27% vote Democratic, ~40% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.

How Grand River compares

Among cities within 25 miles, Grand River leans more Republican than 36 of 72 neighbors.

Grand River runs about 8 points more Republican than Ohio as a whole.

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

Grand River votes Republican even though it is densely developed (about 78%, far above the Ohio average of 34%). Here an older population outweighs the Democratic lean that density usually predicts.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Grand River, OH sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in Grand River looks the way it does

Areas with high high-school completion turn out at higher rates. About 97% of adults in Grand River have completed high school, about 6 points above the Ohio average of 91%. Learn more about the findings and methodology on the political spectrum map.

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.