46637 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 64% of adults in 46637 typically vote, near the U.S. average of about 62%. Among adults in 46637, ~35% vote Democratic, ~29% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 46637 compares
Among zip codes within 15 miles, 46637 leans more Democratic than 15 of 24 neighbors.
46637 runs about 29 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 46637 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 46637. The southwest side runs the most Democratic (D+24) and the north side runs the most Republican (R+4), a spread of about 29 points.
Why 46637 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 46637, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 39% of adults in 46637 hold a bachelor's degree, about 11 points above the U.S. average of 28%. Dense areas vote Democratic, and 46637 sits in the top fifth on density (about 85%, above 85% of zip codes). 46637 runs against the grain of Indiana, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 46637, IN sits in the top quarter nationally on this measure.
Why turnout in 46637 looks the way it does
Turnout in 46637 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.