Area codes 847 and 224

Area codes 847 and 224 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Illinois. The numbering plan area (NPA) comprises the northeastern part of Illinois and many northern suburbs of Chicago. This includes most of Lake County, the northern part of Cook County, the northern part of Kane County, and a small part of McHenry County.

Area code 847 was created on January 20, 1996, in a three-way split of area code 708. Within only five years, 847 was already close to exhaustion from the rapid growth in telecommunication services in the Chicago suburbs and the proliferation of cell phones and pagers. On January 5, 2002, area code 224 was assigned to overlay area code 847. This required ten-digit dialing in all affected communities.

Service area

See also
Illinois area codes: 217, 224/847, 309, 312, 331/630, 618, 708, 773, 779/815, 872
North: 262
West: 815/779 area code 847 and 224 East: Lake Michigan
South: 630/331, 708, 773
Wisconsin area codes: 262, 414, 534/715, 608, 920

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