61545 leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 74% of adults in 61545 typically vote, above the U.S. average of about 62%. Among adults in 61545, ~19% vote Democratic, ~56% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 61545 compares
Among zip codes within 15 miles, 61545 leans more Republican than 14 of 16 neighbors.
61545 runs about 61 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61545 is one of the few Republican-leaning pockets.
Why 61545 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 61545, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 61545 sits in the bottom quarter on density and about 98% of residents are non-Hispanic white, about 16 points above the Illinois average of 81%. 61545 runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; 61545, IL sits in the bottom quarter nationally on this measure.
Why turnout in 61545 looks the way it does
Homeowners vote more often than renters. About 95% of households in 61545 own their home, about 16 points above the Illinois average of 80%. 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.