46220 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 79% of adults in 46220 typically vote, above the U.S. average of about 62%. Among adults in 46220, ~56% vote Democratic, ~23% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 46220 compares
Among zip codes within 15 miles, 46220 leans more Democratic than 36 of 49 neighbors.
46220 runs about 61 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 46220 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 46220. The northwest side is the most Democratic-leaning (D+56) and the north side is the least Democratic-leaning (D+22), a spread of about 34 points.
Why 46220 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 46220, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 68% of adults in 46220 hold a bachelor's degree, about 40 points above the U.S. average of 28%. Dense areas vote Democratic, and 46220 sits in the top fifth on density (about 97%, above 93% of zip codes). 46220 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; 46220, IN sits in the top quarter nationally on this measure.
Why turnout in 46220 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 46220 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 46220 have completed high school, above 95% 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.