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Highland Park, IL is currently using two area codes 224 and 847. Highland Park, 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 Highland Park, 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 Highland Park 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 Highland Park, 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, Hoffman Estates, Lake Forest, Lake in the Hills, Libertyville, Morton Grove, Mount
Prospect, Mundelein, Niles, North Chicago, Northbrook, 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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