46403 is a Democratic stronghold. About 86% of voters here vote Democratic and 14% Republican.
About 61% of adults in 46403 typically vote, near the U.S. average of about 62%. Among adults in 46403, ~53% vote Democratic, ~9% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How 46403 compares
Among zip codes within 15 miles, 46403 leans more Democratic than 21 of 25 neighbors.
46403 runs about 91 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 46403 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 46403. The south side is the most Democratic-leaning (D+79) and the northeast side is the least Democratic-leaning (D+64), a spread of about 16 points.
Why 46403 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 46403, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 46403 is about 17%, about 55 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 42% of adults in 46403 have never been married, above 90% of zip codes. 46403 runs against the grain of Indiana, a Democratic-leaning pocket in a Republican-leaning state.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 46403, IN sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 46403 looks the way it does
Renters vote less often than owners. About 51% of households in 46403 rent, about 26 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 46403 sits in the bottom quarter on routine-care measures. High food insecurity lines up with lower turnout, and about 35% of adults in 46403 report food insecurity, above 97% of zip codes. 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.