46104 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 60% of adults in 46104 typically vote, near the U.S. average of about 62%. Among adults in 46104, ~12% vote Democratic, ~48% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 46104 compares
Among zip codes within 15 miles, 46104 leans more Republican than 11 of 15 neighbors.
46104 runs about 41 points more Republican than Indiana as a whole.
Why 46104 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 46104, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 46104, about 99% of residents are non-Hispanic white, about 27 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 7 points below the Indiana average of 22%. Car-dependent areas vote Republican, and about 88% of residents in 46104 drive to work alone, above 93% of zip codes.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 46104, IN sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 46104 looks the way it does
Turnout in 46104 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.