Willow Springs leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 78% of adults in Willow Springs typically vote, above the U.S. average of about 62%. Among adults in Willow Springs, ~34% vote Democratic, ~44% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Willow Springs compares
Among cities within 25 miles, Willow Springs leans more Republican than 153 of 169 neighbors.
Willow Springs runs about 23 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Willow Springs is one of the few Republican-leaning pockets.
Why Willow Springs leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Willow Springs, not a ranked or complete list of what matters most.
Willow Springs votes Republican even though it is densely developed (about 79%, far above the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Willow Springs runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Willow Springs, IL sits in the top tenth nationally on this measure.
Why turnout in Willow Springs looks the way it does
Turnout in Willow Springs 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 Cities
- Burr Ridge, IL R+3
- Indian Head Park, IL D+13
- Justice, IL D+4
- Hodgkins, IL R+18
- Hickory Hills, IL R+11
- Countryside, IL D+3
- Palos Hills, IL R+11
- Willowbrook, IL D+5
- Bridgeview, IL R+11
- Hinsdale, IL D+12
Cities with Similar Populations
- South Brooksville, FL R+28
- Richlands, VA R+57
- Northfield, IL D+26
- Pelham Manor, NY D+30
- Palermo, CA R+34
- Bernville, PA R+42
- Sandia Park, NM Even
- Hardy, VA R+51
- Baldwyn, MS R+40
- Potosi, MO R+58
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.