60430 is a Democratic stronghold. About 80% of voters here vote Democratic and 20% Republican.
About 79% of adults in 60430 typically vote, above the U.S. average of about 62%. Among adults in 60430, ~63% vote Democratic, ~16% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 60430 compares
Among zip codes within 15 miles, 60430 leans more Democratic than 46 of 67 neighbors.
60430 runs about 50 points more Democratic than Illinois as a whole.
Politics vary noticeably by block within 60430. The west side is the most Democratic-leaning (D+73) and the north side is the least Democratic-leaning (D+43), a spread of about 30 points.
Why 60430 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 60430, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 97% of residents in 60430 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 60430 sits in the top quarter (about 47%, above 87% of zip codes).
Population density and Democratic lean
Places with high population density tend to lean Democratic; 60430, IL sits in the top quarter nationally on this measure.
Why turnout in 60430 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 60430 have completed high school, about 6 points above the U.S. average of 90%. 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.