60423 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 94% of adults in 60423 typically vote, above the U.S. average of about 62%. Among adults in 60423, ~43% vote Democratic, ~51% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.
How 60423 compares
Among zip codes within 15 miles, 60423 leans more Republican than 36 of 47 neighbors.
60423 runs about 20 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 60423 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 60423. The east side runs the most Democratic (D+3) and the south side runs the most Republican (R+16), a spread of about 20 points.
Why 60423 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 60423, not a ranked or complete list of what matters most.
60423 votes Republican even though it is densely developed (about 76%, far above the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 83% of households in 60423 are family households, above 96% of zip codes. 60423 runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 60423, IL sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 60423 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 60423 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in 60423 own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in 60423 have completed high school, above 91% 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.