Columbus City leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 72% of adults in Columbus City typically vote, above the U.S. average of about 62%. Among adults in Columbus City, ~27% vote Democratic, ~45% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Columbus City compares
Among cities within 25 miles, Columbus City leans more Republican than 7 of 50 neighbors.
Columbus City runs about 12 points more Republican than Iowa as a whole.
Politics vary noticeably by neighborhood within Columbus City. The south side is the most Republican-leaning (R+37) and the northeast side is the least Republican-leaning (R+14), a spread of about 23 points.
Why Columbus City 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 Columbus City, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in Columbus City are family households, about 11 points above the U.S. average of 67%.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Columbus City, IA sits in the bottom tenth nationally on this measure.
Why turnout in Columbus City looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Columbus City is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Columbus Junction, IA R+19
- Fredonia, IA R+38
- Cotter, IA R+46
- Wyman, IA R+46
- Letts, IA R+42
- Crawfordsville, IA R+44
- Winfield, IA R+35
- Conesville, IA R+37
- Haskins, IA R+44
- Grandview, IA R+46
Cities with Similar Populations
- Potrero, CA R+15
- Burnettsville, IN R+56
- Kents Hill, ME D+4
- Cottageville, WV R+60
- New Salem, MA D+33
- Harvey, KY R+62
- Knob Lick, KY R+65
- McMillin, WA Even
- Newton, WI R+43
- Queen Anne, MD R+39
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.