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