62090 is a Democratic stronghold. About 94% of voters here vote Democratic and 6% Republican.
About 47% of adults in 62090 typically vote, below the U.S. average of about 62%. Among adults in 62090, ~44% vote Democratic, ~3% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 62090 compares
Among zip codes within 15 miles, 62090 is the most Democratic-leaning.
62090 runs about 76 points more Democratic than Illinois as a whole.
Politics vary noticeably by block within 62090. The north side is the most Democratic-leaning (D+92) and the southwest side is the least Democratic-leaning (D+77), a spread of about 15 points.
Why 62090 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 62090, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 89% of residents in 62090 live in densely developed areas, about 53 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 58% of adults in 62090 have never been married, above 98% of zip codes.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 62090, IL sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 62090 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 62090 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 42%, about 21 points below the Illinois average of 63%. Renters vote less often than owners, and about 68% of households in 62090 rent, about 43 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 50% of adults in 62090 report food insecurity, 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.