61075 leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 78% of adults in 61075 typically vote, above the U.S. average of about 62%. Among adults in 61075, ~28% vote Democratic, ~50% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 61075 compares
Among zip codes within 15 miles, 61075 leans more Republican than 2 of 10 neighbors.
61075 runs about 38 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61075 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 61075. The east side is the most split-leaning (R+35) and the south side is the least split-leaning (Even), a spread of about 34 points.
Why 61075 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 61075, not a ranked or complete list of what matters most.
61075 votes against the grain of Illinois. Illinois leans Democratic overall, while 61075 runs about 38 points more Republican.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 61075, IL sits below 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 61075 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 61075 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 67%, about 7 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 93% of households in 61075 own their home, about 18 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in 61075 have completed high school, above 86% 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.