Cicero leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 35% of adults in Cicero typically vote, below the U.S. average of about 62%. Among adults in Cicero, ~23% vote Democratic, ~12% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How Cicero compares
Among cities within 25 miles, Cicero leans more Democratic than 118 of 161 neighbors.
Cicero runs about 23 points more Democratic than Illinois as a whole.
Politics vary noticeably by neighborhood within Cicero. The west side is the most Democratic-leaning (D+38) and the southwest side is the least Democratic-leaning (D+25), a spread of about 13 points.
Why Cicero 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 Cicero, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Cicero live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in Cicero have never been married, above 97% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Cicero, IL sits in the top tenth nationally 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 Cicero looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Cicero is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 13 points below the Illinois average of 63%. Renters vote less often than owners, and about 45% of households in Cicero rent, about 20 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 35% of adults in Cicero report food insecurity, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Berwyn, IL D+37
- Stickney, IL D+16
- Riverside, IL D+39
- Oak Park, IL D+78
- Forest View, IL R+14
- Forest Park, IL D+67
- North Riverside, IL D+18
- Lyons, IL D+14
- Hines, IL D+73
- Chicago, IL D+27
Cities with Similar Populations
- Terre Haute, IN R+6
- Waldorf, MD D+60
- Mission Viejo, CA R+3
- Lawton, OK R+9
- Slidell, LA R+17
- Bloomington, IL D+11
- Mountain View, CA D+46
- Harlingen, TX R+3
- Westland, MI D+15
- Littleton, CO D+17
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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.