61375 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 67% of adults in 61375 typically vote, near the U.S. average of about 62%. Among adults in 61375, ~19% vote Democratic, ~48% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 61375 compares
Among zip codes within 15 miles, 61375 leans more Republican than 12 of 18 neighbors.
61375 runs about 54 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61375 is one of the few Republican-leaning pockets.
Why 61375 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 61375, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 6% of residents in 61375 live in densely developed areas, about 27 points below the Illinois average of 33%. Low college attainment predicts Republican voting, and 61375 sits in the bottom quarter (about 16%, below 76% of zip codes). 61375 runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 61375, IL sits below the national average 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 61375 looks the way it does
Turnout in 61375 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.