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Telephone area code 779
State: Illinois. In service since: Landlines: 65 . rows · Area Code phone numbers. Find any area code caller's name, address, email, and photos. 36 Results Reverse phone lookup for phone numbers in the area code. It includes the cities of Rockford, Joliet, and DeKalb. It is an overlay for area code . Area code serves northern Illinois except for the Chicago metro area. The Central time zone is also known as America/Chicago. As of the last time this page was loaded, the current time is am. History was first put in service March 17, It was created from area code Nearby Area Codes (Springfield, IL) (Hammond, IN) / (Elgin, IL). The area code is located in the Central timezone. As of the last time this page was loaded, the current time is am. The area code is located in the Central timezone. History was first put in service March 17, It was created from area code Nearby Area Codes (Springfield, IL) (Hammond, IN) / (Elgin, IL). The Central time zone is also known as America/Chicago. Area Code is one of the three-digit telephone area codes in the USA. It covers roughly 1,, unique phone numbers and . The Area Code is located in the state of Illinois. It touches 20 counties, including Will, Winnebago. Area code covers a lot of space, including its major city, Rockford, IL, and its , residents.