62842 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 69% of adults in 62842 typically vote, above the U.S. average of about 62%. Among adults in 62842, ~9% vote Democratic, ~60% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How 62842 compares
Among zip codes within 15 miles, 62842 leans more Republican than 5 of 10 neighbors.
62842 runs about 84 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 62842 is one of the few Republican-leaning pockets.
Why 62842 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 62842, not a ranked or complete list of what matters most.
62842 votes against the grain of Illinois. Illinois leans Democratic overall, while 62842 runs about 84 points more Republican. A high white share with below-average college attainment predicts Republican voting, and 62842 fits that profile on both counts.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 62842, 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 62842 looks the way it does
Homeowners vote more often than renters. About 90% of households in 62842 own their home, about 10 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.