46405 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 52% of adults in 46405 typically vote, below the U.S. average of about 62%. Among adults in 46405, ~23% vote Democratic, ~29% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.
How 46405 compares
Among zip codes within 15 miles, 46405 leans more Republican than 23 of 28 neighbors.
46405 runs about 8 points more Democratic than Indiana as a whole.
Politics vary noticeably by block within 46405. The northwest side runs the most Democratic (D+9) and the north side runs the most Republican (R+18), a spread of about 27 points.
Why 46405 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 46405, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 8% of adults in 46405 hold a bachelor's degree, about 14 points below the Indiana average of 22%. Dense places usually vote Democratic, but 46405 runs against that pattern.
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as 46405, IN does.
Why turnout in 46405 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 46405 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 23% of adults in 46405 report food insecurity, above 86% of zip codes. Low high-school completion lines up with lower turnout, and about 78% of adults in 46405 have completed high school, below 93% 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.