<P> Area code 313 is an area code within 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 Dearborn, Dearborn Heights, Inkster, Melvindale, the Grosse Pointe communities, Lincoln Park, Redford, and Taylor north of Goddard Road, River Rouge, and Ecorse . </P> <P> The Numbering Plan Area 313 was created as one of the original 86 plan areas in 1947 . It included the entire southeastern quadrant of Michigan, including Metro Detroit, Flint, and the southern part of Michigan's "Thumb ." </P> <P> Because of the demand for new telephone service, area code 810 was created for the northern suburbs, Flint, and the "southern" Thumb on December 1, 1993 . On December 13, 1997, the 313 area was further divided, creating area code 734 out of Washtenaw County (Ann Arbor), Monroe County, plus western and downriver Wayne County . </P> <P> Area code 679 has been reserved as a future overlay to the 313 area . Relief planning is in progress and 2014 estimates do not expected 313 to be exhausted until 2019 . </P>

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