47901 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 42% of adults in 47901 typically vote, below the U.S. average of about 62%. Among adults in 47901, ~29% vote Democratic, ~13% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How 47901 compares
Among zip codes within 15 miles, 47901 leans more Democratic than 15 of 16 neighbors.
47901 runs about 57 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 47901 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 47901. The south side is the most Democratic-leaning (D+46) and the east side is the least Democratic-leaning (D+28), a spread of about 18 points.
Why 47901 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 47901, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 47901 live in densely developed areas, about 59 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 47901 sits in the top quarter (about 42%, above 82% of zip codes). 47901 runs against the grain of Indiana, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 47901, IN sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 47901 looks the way it does
Renters vote less often than owners. About 83% of households in 47901 rent, about 58 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 47901 sits in the top 15% on a violent-crime measure. 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.