46103 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 79% of adults in 46103 typically vote, above the U.S. average of about 62%. Among adults in 46103, ~16% vote Democratic, ~64% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 46103 compares
Among zip codes within 15 miles, 46103 leans more Republican than 13 of 16 neighbors.
46103 runs about 41 points more Republican than Indiana as a whole.
Why 46103 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 46103, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 46103, about 94% of residents are non-Hispanic white, about 22 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 5 points below the Indiana average of 22%. A high family-household share predicts Republican voting, and about 74% of households in 46103 are family households, above 76% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 46103, 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 46103 looks the way it does
Homeowners vote more often than renters. About 97% of households in 46103 own their home, about 16 points above the Indiana average of 82%. 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.