Area code 586 is thetelephonearea code serving much ofMacomb County, Michigan, introduced in 2001 as a split fromarea code 810. Its territory was originally part ofarea code 313.
Macomb County was originally served by Detroit'sarea code 313, one of theoriginal 86 area codes in theNorth American Numbering Plan. In 1993,area code 810 wassplit from 313; the service area of 810 initially included all of the former 313 outside ofMonroe,Wayne, andWashtenaw counties.
In 1997,Oakland County, bordering Macomb County to the west, was split from area code 810 asarea code 248. Area code 586 was first proposed as anoverlay for the 810 territory, to be implemented in 2000.[1] However, overlays were still a new concept at this time, and met with some resistance due to the need forten-digit dialing. In the face of intense opposition to the overlay proposal, 586 was instead implemented as a split, with most of Macomb County getting the new area code. The area code was introduced on September 22, 2001.Permissive dialing of 810 continued until March 23, 2002.[2]
Area code 586 servesMacomb County, Michigan, including the following communities:
| North:810 | ||
| West:248/947 | 586 | East:810,519/226/548/382 |
| South:313 | ||
| Ontario area codes:416/437/647/942,519/226/548/382,613/343/753,705/249/683,807,905/289/365/742 | ||
42°36′N83°00′W / 42.6°N 83.0°W /42.6; -83.0
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