Chillicothe is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 70% of adults in Chillicothe typically vote, above the U.S. average of about 62%. Among adults in Chillicothe, ~16% vote Democratic, ~54% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Chillicothe compares
Among cities within 25 miles, Chillicothe leans more Republican than 44 of 53 neighbors.
Chillicothe runs about 41 points more Republican than Iowa as a whole.
Why Chillicothe 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 Chillicothe, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 80% of households in Chillicothe are family households, about 13 points above the U.S. average of 67%.
Population density and Republican lean
Places with low population density tend to lean Republican; Chillicothe, IA sits below the national average on this measure.
Why turnout in Chillicothe looks the way it does
Turnout in Chillicothe sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ottumwa Junction, IA R+52
- Rutledge, IA R+48
- Munterville, IA R+53
- Dudley, IA R+52
- Kirkville, IA R+54
- Cliffland, IA R+35
- Ottumwa, IA R+20
- Eddyville, IA R+48
- Dahlonega, IA R+44
- Cedar, IA R+53
Cities with Similar Populations
- Oak Ridge, PA R+70
- Maple Valley, IN R+60
- Holland, KS R+67
- Masters, MO R+66
- Rexford, KS R+81
- Glenville, KY R+58
- Stephens, OR R+29
- Millerstown, OH R+60
- Pitzer, IA R+48
- Newby, KY R+58
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Iowa 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.