61455 leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 60% of adults in 61455 typically vote, near the U.S. average of about 62%. Among adults in 61455, ~32% vote Democratic, ~28% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 61455 compares
Among zip codes within 15 miles, 61455 is the most Democratic-leaning.
61455 runs about 4 points more Republican than Illinois as a whole.
Politics vary noticeably by block within 61455. The north side runs the most Democratic (D+19) and the northeast side runs the most Republican (R+19), a spread of about 37 points.
Why 61455 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 61455, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 37% of adults in 61455 hold a bachelor's degree, about 9 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 48% of adults in 61455 have never been married, above 94% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 61455, IL sits in the top quarter 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 61455 looks the way it does
Renters vote less often than owners. About 50% of households in 61455 rent, about 25 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 21% of adults in 61455 report food insecurity, above 82% 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 Illinois State Board of 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.