62223 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 76% of adults in 62223 typically vote, above the U.S. average of about 62%. Among adults in 62223, ~44% vote Democratic, ~32% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 62223 compares
Among zip codes within 15 miles, 62223 leans more Democratic than 18 of 48 neighbors.
62223 runs about 4 points more Democratic than Illinois as a whole.
Politics vary noticeably by block within 62223. The north side runs the most Democratic (D+40) and the southwest side runs the most Republican (R+25), a spread of about 64 points.
Why 62223 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 62223, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 62223 is about 64%, about 9 points below the U.S. average of 72%.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 62223, IL sits above 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 62223 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 62223 have completed high school, about 6 points above the U.S. average of 90%. 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.