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

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

Rocky River leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.

 

About 89% of adults in Rocky River typically vote, above the U.S. average of about 62%. Among adults in Rocky River, ~53% vote Democratic, ~36% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.

How Rocky River compares

Among cities within 25 miles, Rocky River leans more Democratic than 67 of 94 neighbors.

Rocky River runs about 32 points more Democratic than Ohio as a whole. Ohio leans Republican overall, while Rocky River is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Rocky River. The east side is the most Democratic-leaning (D+28) and the southwest side is the least Democratic-leaning (D+15), a spread of about 13 points.

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

Dense areas vote Democratic. About 91% of residents in Rocky River live in densely developed areas, about 55 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Rocky River sits in the top quarter (about 65%, above 98% of cities). Rocky River runs against the grain of Ohio, a Democratic-leaning pocket in a Republican-leaning state.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Rocky River, OH sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Rocky River looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Rocky River is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Rocky River have completed high school, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.