Area code 313

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Map of area code 313 in Michigan.

Area code 313 is an area code in southeast Michigan. It serves the city of Detroit, the city's innermost enclave cities (Hamtramck and Highland Park), and also includes Dearborn, Dearborn Heights, Inkster, Melvindale, the Grosse Pointe communities, Lincoln Park, Redford, and Taylor north of Goddard Road.

313 was created in 1947 as one of the original area codes. It served the entire southeastern quadrant of Michigan, including Metro Detroit, Flint, and the southern part of Michigan's "Thumb." Due to the rotary dialing technology in use at the time, AT&T assigned the shortest codes to the most frequently called cities. Detroit, then a major thriving city, was given an area code with seven clicks, the fourth-shortest behind 1-212 New York (five pulses), 1-213 Los Angeles and 1-312 Chicago (six pulses).

Due to demand for new phone numbers, 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 the 734 area out of Washtenaw, Monroe, and western and Downriver Wayne counties.

A proposal exists to create an overlay area code for the 313 area.[1]

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Michigan area codes: 231, 248, 269, 313, 517, 586, 616, 734, 810, 906, 947, 989
North: 248/947, 586
West: 734 Area code 313 East: 519/226
South: 519/226, 734
Ontario area codes: 226, 249, 289, 343, 365, 416, 519, 613, 647, 705, 807, 905