60440 leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 61% of adults in 60440 typically vote, near the U.S. average of about 62%. Among adults in 60440, ~40% vote Democratic, ~21% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 60440 compares
Among zip codes within 15 miles, 60440 leans more Democratic than 58 of 64 neighbors.
60440 runs about 20 points more Democratic than Illinois as a whole.
Politics vary noticeably by block within 60440. The north side is the most Democratic-leaning (D+42) and the southeast side is the least Democratic-leaning (D+21), a spread of about 21 points.
Why 60440 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 60440, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 60440 live in densely developed areas, about 59 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 36% of adults in 60440 have never been married, above 81% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 60440, IL 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 60440 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 60440 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 4% of homes in 60440 have more than one occupant per room, above 81% 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.