Campton Hills - 630 dialing code
Dialing code +1 (630) cities
- Addison
- Winfield
- Geneva
- Millbrook
- Montgomery
- St. Charles
- Westmont
- Willowbrook
- Villa Park
- Aurora
- Darien
- Bloomingdale
- Bartlett
- Batavia
- Bensenville
- Big Rock
- Bolingbrook
- Boulder Hill
- Burr Ridge
- Campton Hills
- Carol Stream
- Clarendon Hills
- Downers Grove
- Elburn
- Elmhurst
- Glendale Heights
- Glen Ellyn
- Hanover Park
- Hinsdale
- Itasca
- Kaneville
- Lemont
- Lily Lake
- Lisle
- Lombard
- Naperville
- North Aurora
- Oak Brook
- Oakbrook Terrace
- Oswego
- Plano
- Prestbury
- Roselle
- Streamwood
- Sugar Grove
- Virgil
- Warrenville
- Wayne
- West Chicago
- Wheaton
- Wood Dale
- Woodridge
- Yorkville