WhereCall is here to provide you with the most information on the area code 773, located in ILLINOIS.

NPA Information
Area Code (NPA) 773
NPA Status Active
In Jeopardy? No
Is Assigned? Yes
Assignment Date 29 Feb 1996
In Service? Yes
In Service Date 12 Oct 1996
Parent NPA 312
Overlay Yes
Overlay Complex
Predominant Timezone(s) UTC-06:00

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