Piqua, OH Political Map | Democrat & Republican Areas in Piqua

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

Piqua leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.

 

About 69% of adults in Piqua typically vote, above the U.S. average of about 62%. Among adults in Piqua, ~19% vote Democratic, ~50% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.

How Piqua compares

Among cities within 25 miles, Piqua leans more Republican than 11 of 105 neighbors.

Piqua runs about 32 points more Republican than Ohio as a whole.

Politics vary noticeably by neighborhood within Piqua. The southeast side is the most Republican-leaning (R+51) and the north side is the least Republican-leaning (R+40), a spread of about 11 points.

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

Piqua votes Republican even though it is densely developed (about 68%, far above the Ohio average of 34%). State and regional patterns outweigh the Democratic lean that density usually predicts here.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Piqua, 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 Piqua looks the way it does

Turnout in Piqua sits close to the national pattern. 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.