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  1. Area code 313. Coordinates: 42.3°N 83.1°W. Map of Michigan area codes. Area code 313 is a telephone area code of the North American Numbering Plan serving Detroit and most of its closest suburbs in Wayne County, Michigan. It includes the enclave cities Hamtramck and Highland Park, as well as Allen Park, Dearborn, Dearborn Heights, Ecorse, the ...

  2. The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.

  3. Area code 313 is a telephone area code of the North American Numbering Plan serving Detroit and most of its closest suburbs in Wayne County, Michigan. It includes the enclave cities Hamtramck and Highland Park, as well as Allen Park, Dearborn, Dearborn Heights, Ecorse, Inkster, Melvindale, the Grosse Pointe communities, Lincoln Park, Redford, River Rouge, and Taylor north of Goddard Road and ...

  4. 313 Area Code. Area code 313 is in Michigan (MI), USA and some of the main locations it covers are Detroit, Dearborn, Taylor, etc. In service date for area code 313: January 01, 1947. The current time for places served by area code 313 is 06:19:18 PM (Eastern Time Zone).

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