Derby leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 76% of adults in Derby typically vote, above the U.S. average of about 62%. Among adults in Derby, ~20% vote Democratic, ~56% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Derby compares
Among cities within 25 miles, Derby leans more Republican than 13 of 90 neighbors.
Derby runs about 29 points more Republican than Indiana as a whole.
Why Derby 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 Derby, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Derby sits in the bottom quarter on density and more than 99% of residents are non-Hispanic white, about 11 points above the Indiana average of 88%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Derby, IN sits in the bottom quarter 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 Derby looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Derby 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 65%, above 67% of cities. Homeowners vote more often than renters, and about 93% of households in Derby own their home, about 18 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Dexter, IN R+52
- Magnet, IN R+52
- Lilly Dale, IN R+47
- Union Star, KY R+65
- Leopold, IN R+48
- Rome, IN R+46
- Gatchel, IN R+44
- Branchville, IN R+44
- Tobinsport, IN R+47
Cities with Similar Populations
- Pearson, AL R+74
- Kerr, MO R+61
- Erwins, NY R+34
- Millbrook, WV R+63
- Brian Head, UT R+57
- Clifton Mills, WV R+63
- Mohicanville, OH R+62
- Durant, FL R+31
- Home, KS R+62
- Royal Lakes, IL R+43
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.