60949 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 70% of adults in 60949 typically vote, above the U.S. average of about 62%. Among adults in 60949, ~18% vote Democratic, ~52% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How 60949 compares
Among zip codes within 15 miles, 60949 leans more Republican than 5 of 14 neighbors.
60949 runs about 58 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 60949 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 60949. The north side is the most Republican-leaning (R+61) and the south side is the least Republican-leaning (R+46), a spread of about 15 points.
Why 60949 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 60949, not a ranked or complete list of what matters most.
60949 votes against the grain of Illinois. Illinois leans Democratic overall, while 60949 runs about 58 points more Republican. Low college attainment predicts Republican voting, and 60949 sits in the bottom quarter (about 15%, below 80% of zip codes). A high family-household share predicts Republican voting, and about 75% of households in 60949 are family households, above 80% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 60949, IL sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 60949 looks the way it does
Turnout in 60949 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.