62701 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 33% of adults in 62701 typically vote, below the U.S. average of about 62%. Among adults in 62701, ~23% vote Democratic, ~10% Republican, and ~67% don't vote. The map below shows estimated turnout by block group.
How 62701 compares
Among zip codes within 15 miles, 62701 is the most Democratic-leaning.
62701 runs about 31 points more Democratic than Illinois as a whole.
Why 62701 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 62701, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 62701 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 67% of adults in 62701 have never been married, in the top fraction of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 62701, IL sits in the top tenth nationally 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 62701 looks the way it does
Renters vote less often than owners. About 95% of households in 62701 rent, about 70 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 62701 sits in the bottom quarter on routine-care measures. High food insecurity lines up with lower turnout, and about 29% of adults in 62701 report food insecurity, above 93% 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.