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Phone Directory 312-803 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 803-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-803 Chicago, IL Mci Worldcom Communications Cook Landline 09/11/1994

Other Series For Prefixes

312-8030###
312-8031###
312-8032###
312-8033###
312-8034###
312-8035###
312-8036###
312-8037###
312-8038###
312-8039###