46128 is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 70% of adults in 46128 typically vote, above the U.S. average of about 62%. Among adults in 46128, ~15% vote Democratic, ~55% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How 46128 compares
Among zip codes within 15 miles, 46128 leans more Republican than 7 of 15 neighbors.
46128 runs about 40 points more Republican than Indiana as a whole.
Why 46128 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 46128, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 75% of households in 46128 are family households, about 9 points above the U.S. average of 67%.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 46128, IN sits in the top quarter nationally on this measure.
Why turnout in 46128 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 46128 have completed high school, about 6 points above the Indiana average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.