61284 leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 82% of adults in 61284 typically vote, above the U.S. average of about 62%. Among adults in 61284, ~28% vote Democratic, ~54% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How 61284 compares
Among zip codes within 15 miles, 61284 leans more Republican than 18 of 23 neighbors.
61284 runs about 42 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61284 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 61284. The south side is the most Republican-leaning (R+38) and the northeast side is the least Republican-leaning (R+26), a spread of about 12 points.
Why 61284 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 61284, not a ranked or complete list of what matters most.
61284 votes against the grain of Illinois. Illinois leans Democratic overall, while 61284 runs about 42 points more Republican.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as 61284, IL does.
Why turnout in 61284 looks the way it does
Homeowners vote more often than renters. About 89% of households in 61284 own their home, about 10 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 97% of adults in 61284 have completed high school, above 90% 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.