University of Illinois Urbana‑Champaign

Geographic Region: Counties

Counties are the primary legal divisions in Illinois, which has 102 counties..

The county is the principal geographic region for presentation of data on IECAM. All site-based data (e.g., child care), most nonsite-based data (e.g., early intervention, home visiting), and almost all demographic data (e.g., population) are presented by county.

Source of definition: U.S. Census Bureau.

Interactive Map of Counties in Illinois