Place
- Calumet Park, Illinois18
- Campton Hills, Illinois1
- Carbon Hill, Illinois1
- Carol Stream, Illinois2
- Carpentersville, Illinois1
- Cary, Illinois1
- Channahon, Illinois1
- Channel Lake, Illinois1
- Chicago Heights, Illinois2
- Chicago Ridge, Illinois18
- Chicago, Illinois2
- Cicero, Illinois18
- Clarendon Hills, Illinois2
- Coal City, Illinois1
- Cook County, Illinois18
- Coral, Illinois1
- Country Club Hills, Illinois2
- Countryside, Illinois13
- Crest Hill, Illinois2
- Crestwood, Illinois2