61358 leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 74% of adults in 61358 typically vote, above the U.S. average of about 62%. Among adults in 61358, ~20% vote Democratic, ~54% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How 61358 compares
Among zip codes within 15 miles, 61358 leans more Republican than 9 of 15 neighbors.
61358 runs about 56 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61358 is one of the few Republican-leaning pockets.
Why 61358 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 61358, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 9% of adults in 61358 hold a bachelor's degree, about 18 points below the Illinois average of 27%. Rural areas vote Republican, and 61358 sits in the bottom quarter on density (about 6%, below 77% of zip codes). 61358 runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 61358, IL sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 61358 looks the way it does
Turnout in 61358 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.