62338 is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 95% of adults in 62338 typically vote, above the U.S. average of about 62%. Among adults in 62338, ~16% vote Democratic, ~79% Republican, and ~5% don't vote. The map below shows estimated turnout by block group.
How 62338 compares
Among zip codes within 15 miles, 62338 leans more Republican than 5 of 12 neighbors.
62338 runs about 77 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 62338 is one of the few Republican-leaning pockets.
Why 62338 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 62338, not a ranked or complete list of what matters most.
62338 votes against the grain of Illinois. Illinois leans Democratic overall, while 62338 runs about 77 points more Republican. Car-dependent areas vote Republican, and about 84% of residents in 62338 drive to work alone, above 83% of zip codes.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 62338, IL sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 62338 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 62338 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 95% of households in 62338 own their home, about 20 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and more than 99% of adults in 62338 have completed high school, in the top fraction 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.