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Phone Directory 773-478 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (773) 478-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-478 Chicago, IL Ameritech Illinois Cook Landline 10/15/1996

Other Series For Prefixes

773-4780###
773-4781###
773-4782###
773-4783###
773-4784###
773-4785###
773-4786###
773-4787###
773-4788###
773-4789###