60604 is a Democratic stronghold. About 82% of voters here vote Democratic and 18% Republican.
About 37% of adults in 60604 typically vote, below the U.S. average of about 62%. Among adults in 60604, ~31% vote Democratic, ~7% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.
How 60604 compares
Among zip codes within 15 miles, 60604 leans more Democratic than 69 of 103 neighbors.
60604 runs about 53 points more Democratic than Illinois as a whole.
Why 60604 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 60604, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 91% of adults in 60604 hold a bachelor's degree, about 63 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 60604 is about 53%, about 20 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 71% of adults in 60604 have never been married, in the top fraction of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 60604, IL sits in the top tenth nationally on this measure.
Why turnout in 60604 looks the way it does
Renters vote less often than owners. About 49% of households in 60604 rent, about 24 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 60604 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 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.