46321 leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 77% of adults in 46321 typically vote, above the U.S. average of about 62%. Among adults in 46321, ~41% vote Democratic, ~36% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 46321 compares
Among zip codes within 15 miles, 46321 leans more Democratic than 13 of 58 neighbors.
46321 runs about 25 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 46321 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 46321. The northwest side is the most Democratic-leaning (D+15) and the southwest side is the least Democratic-leaning (Even), a spread of about 15 points.
Why 46321 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 46321, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 46321 live in densely developed areas, about 62 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 46321 sits in the top quarter (about 50%, above 89% of zip codes). 46321 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; 46321, IN sits in the top quarter nationally on this measure.
Why turnout in 46321 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 46321 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. 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.