47403 leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 65% of adults in 47403 typically vote, near the U.S. average of about 62%. Among adults in 47403, ~37% vote Democratic, ~28% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 47403 compares
Among zip codes within 15 miles, 47403 leans more Democratic than 8 of 13 neighbors.
47403 runs about 33 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while 47403 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 47403. The northeast side runs the most Democratic (D+50) and the southwest side runs the most Republican (R+33), a spread of about 84 points.
Why 47403 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 47403, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 41% of adults in 47403 hold a bachelor's degree, about 13 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 37% of adults in 47403 have never been married, above 82% of zip codes. 47403 runs against the grain of Indiana, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 47403, IN sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 47403 looks the way it does
Turnout in 47403 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.