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Northbrook, IL is currently using two area codes 224 and 847. Northbrook, IL utilizes an area code overlay in which area
codes 224 and 847 serve the same geographic area. The area code overlay which is in use in Northbrook, IL today was established in 2002 at which time area code 224 was created as an overlay of area code 847.
Area code 847 was originally established in 1996. Ten digit dialing (area code + seven digit number) is necessary in Northbrook because two different homes in the same geographic area can have the same seven
digit phone number but each would have a different area code.
Today, in addition to Northbrook, IL, area codes 224 and 847 serve the larger communities of Algonquin, Arlington Heights, Buffalo Grove,
Carpentersville, Des Plaines, Elgin, Elk Grove Village, Evanston, Glenview, Gurnee, Highland Park, Hoffman Estates, Lake Forest, Lake in the Hills, Libertyville, Morton Grove, Mount Prospect, Mundelein,
Niles, North Chicago, Palatine, Park Ridge, Rolling Meadows, Round Lake Beach, Schaumburg, Skokie, Vernon Hills, Waukegan, Wheeling, Wilmette and Zion, in addition to many smaller communities in northeastern
Illinois. |
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