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Phone Directory 312-745 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 745-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-745 Chicago, IL Ameritech Illinois Cook Landline 01/25/1998

Other Series For Prefixes

312-7450###
312-7451###
312-7452###
312-7453###
312-7454###
312-7455###
312-7456###
312-7457###
312-7458###
312-7459###