61547 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 92% of adults in 61547 typically vote, above the U.S. average of about 62%. Among adults in 61547, ~30% vote Democratic, ~62% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How 61547 compares
Among zip codes within 15 miles, 61547 leans more Republican than 17 of 24 neighbors.
61547 runs about 46 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61547 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 61547. The southwest side is the most Republican-leaning (R+44) and the northeast side is the least Republican-leaning (R+33), a spread of about 11 points.
Why 61547 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 61547, not a ranked or complete list of what matters most.
61547 votes against the grain of Illinois. Illinois leans Democratic overall, while 61547 runs about 46 points more Republican. Car-dependent areas vote Republican, and about 83% of residents in 61547 drive to work alone, above 82% of zip codes. A high family-household share predicts Republican voting, and about 84% of households in 61547 are family households, above 97% of zip codes.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as 61547, IL does.
Why turnout in 61547 looks the way it does
Homeowners vote more often than renters. About 95% of households in 61547 own their home, about 16 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 99% of adults in 61547 have completed high school, above 97% 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.