62996 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 67% of adults in 62996 typically vote, near the U.S. average of about 62%. Among adults in 62996, ~20% vote Democratic, ~47% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 62996 compares
Among zip codes within 15 miles, 62996 leans more Republican than 9 of 19 neighbors.
62996 runs about 52 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 62996 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 62996. The southeast side is the most Republican-leaning (R+55) and the north side is the least Republican-leaning (R+22), a spread of about 33 points.
Why 62996 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 62996, not a ranked or complete list of what matters most.
62996 votes against the grain of Illinois. Illinois leans Democratic overall, while 62996 runs about 52 points more Republican. Car-dependent areas vote Republican, and about 84% of residents in 62996 drive to work alone, above 85% of zip codes. Low college attainment predicts Republican voting, and 62996 sits in the bottom quarter (about 12%, below 89% of zip codes).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 62996, 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 62996 looks the way it does
Turnout in 62996 sits close to the national pattern. 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.