61489 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 76% of adults in 61489 typically vote, above the U.S. average of about 62%. Among adults in 61489, ~21% vote Democratic, ~55% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 61489 compares
Among zip codes within 15 miles, 61489 leans more Republican than 10 of 13 neighbors.
61489 runs about 54 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while 61489 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 61489. The south side is the most Republican-leaning (R+50) and the north side is the least Republican-leaning (R+38), a spread of about 12 points.
Why 61489 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 61489, not a ranked or complete list of what matters most.
61489 votes against the grain of Illinois. Illinois leans Democratic overall, while 61489 runs about 54 points more Republican. Rural areas vote Republican, and 61489 sits in the bottom quarter on density (about 6%, below 76% of zip codes).
High-school completion, developed land, and voter turnout
Places that combine high-school-completion-heavy adults and a rural land-use pattern tend to turn out at a higher rate, as 61489, IL does.
Why turnout in 61489 looks the way it does
Homeowners vote more often than renters. About 91% of households in 61489 own their home, about 12 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 97% of adults in 61489 have completed high school, above 92% 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.