Centennial is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 77% of adults in Centennial typically vote, above the U.S. average of about 62%. Among adults in Centennial, ~14% vote Democratic, ~63% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Centennial compares
Among cities within 25 miles, Centennial leans more Republican than 83 of 91 neighbors.
Centennial runs about 46 points more Republican than Indiana as a whole.
Why Centennial 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 Centennial, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 92% of residents in Centennial drive to work alone, about 18 points above the U.S. average of 74%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Centennial, IN sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Centennial looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Centennial have completed high school, about 7 points above the Indiana average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Wallace, IN R+63
- Harveysburg, IN R+64
- Kingman, IN R+65
- Hillsboro, IN R+68
- Sylvania, IN R+57
- Veedersburg, IN R+60
- Tangier, IN R+61
- Alamo, IN R+61
- Waynetown, IN R+53
Cities with Similar Populations
- Zetto, GA D+9
- Patty, TN R+71
- Tussy, OK R+72
- Enterline, PA R+55
- Douglass, SC D+38
- Rosewood, TX R+77
- Yankeetown, TN R+72
- Rowell, SC R+32
- Arnold City, PA R+25
- Yantisville, IL R+65
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.