60945 is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 71% of adults in 60945 typically vote, above the U.S. average of about 62%. Among adults in 60945, ~17% vote Democratic, ~54% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 60945 compares
Among zip codes within 15 miles, 60945 leans more Republican than 6 of 13 neighbors.
60945 runs about 63 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 60945 is one of the few Republican-leaning pockets.
Why 60945 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 60945, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 88% of residents in 60945 drive to work alone, about 15 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 60945 sits in the bottom quarter (about 16%, below 79% of zip codes). 60945 runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as 60945, IL does.
Why turnout in 60945 looks the way it does
Turnout in 60945 sits close to the national pattern. 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.