62343 is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 63% of adults in 62343 typically vote, near the U.S. average of about 62%. Among adults in 62343, ~11% vote Democratic, ~52% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How 62343 compares
Among zip codes within 15 miles, 62343 leans more Republican than 7 of 10 neighbors.
62343 runs about 75 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 62343 is one of the few Republican-leaning pockets.
Why 62343 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 62343, not a ranked or complete list of what matters most.
62343 votes against the grain of Illinois. Illinois leans Democratic overall, while 62343 runs about 75 points more Republican. Rural areas with a high white share vote Republican. Non-Hispanic white share in 62343 is about 96%, well above similar-sized zip codes (around 75%).
Population density and Republican lean
Places with low population density tend to lean Republican; 62343, IL sits in the bottom quarter nationally on this measure.
Why turnout in 62343 looks the way it does
Turnout in 62343 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.