Rio Grande is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 62% of adults in Rio Grande typically vote, near the U.S. average of about 62%. Among adults in Rio Grande, ~14% vote Democratic, ~48% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How Rio Grande compares
Among cities within 25 miles, Rio Grande leans more Republican than 15 of 88 neighbors.
Rio Grande runs about 46 points more Republican than Ohio as a whole.
Why Rio Grande leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Rio Grande. 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; Rio Grande, OH sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Rio Grande looks the way it does
Renters vote less often than owners. About 54% of households in Rio Grande rent, about 29 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 87% of adults in Rio Grande have completed high school, below 75% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Centerpoint, OH R+62
- Thurman, OH R+64
- Gage, OH R+62
- Bidwell, OH R+54
- Vinton, OH R+62
- Patriot, OH R+65
- Vega, OH R+68
- Northup, OH R+62
- Gallia, OH R+65
Cities with Similar Populations
- Silverdale, PA R+14
- Dillingham, NC R+13
- Lake St. Croix Beach, MN D+8
- Boston, VA R+37
- Ore Spring, TN R+66
- Wheaton, MO R+66
- Matewan, WV R+74
- New Washington, IN R+59
- Nickelsville, GA R+75
- Burlington, IN R+60
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.