Area codes 313 and 679

Area codes 313 and 679 are telephone area codes in the North American Numbering Plan (NANP) 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 Grosse Pointe communities, Harper Woods, Inkster, Melvindale, Lincoln Park, Redford, River Rouge, and Taylor north of Goddard Road and east of Holland Road.

Area code 313 was assigned to all of Michigan in 1947, but has been reduced in geographical extent by area code splits. Area code 679 was added to the 313 numbering plan area in 2025, forming an overlay complex.

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