62663 is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 67% of adults in 62663 typically vote, near the U.S. average of about 62%. Among adults in 62663, ~11% vote Democratic, ~55% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 62663 compares
Among zip codes within 15 miles, 62663 leans more Republican than 11 of 12 neighbors.
62663 runs about 77 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 62663 is one of the few Republican-leaning pockets.
Why 62663 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 62663, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 62663 sits in the bottom quarter on density and more than 99% of residents are non-Hispanic white, about 18 points above the Illinois average of 81%. 62663 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; 62663, IL sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 62663 looks the way it does
Homeowners vote more often than renters. About 93% of households in 62663 own their home, about 13 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 97% of adults in 62663 have completed high school, above 88% 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.