The Detroit metropolitan area, often referred to as Metro Detroit, is a major metropolitan area in the U.S. State of Michigan, consisting of the city of Detroit and its surrounding area. There are varied definitions of the area, including the official statistical areas designated by the Office of Management and Budget, a federal agency of the United States. Metro Detroit is known for its automotive heritage, arts, entertainment, popular music, and sports. The area includes a variety of natural landscapes, parks, and beaches, with a recreational coastline linking the Great Lakes. Metro Detroit also has one of the largest metropolitan economies in America with seventeen Fortune 500 companies.
Area codes 705 and 249 are telephone area codes in the North American Numbering Plan (NANP) for most of northeastern and central Ontario in Canada. Area code 705 was created in a 1957 split from portions of the 613 and 519 numbering plan areas. After a reduction in geographic coverage in 1962, the region covered by this area code was assigned a second area code, 249, in an overlay plan in 2011. A third area code, 683, was then added, effective June 2022.
Area codes 905, 289, 365, and 742 are telephone area codes in the North American Numbering Plan (NANP) for the Golden Horseshoe region that surrounds Lake Ontario in Southern Ontario, Canada. The numbering plan area (NPA) comprises (clockwise) the Niagara Peninsula, the city of Hamilton, the regional municipalities of Halton, Peel, York, Durham, and parts of Northumberland County, but excludes the City of Toronto.
Area codes 416, 647, and 437 are telephone area codes in the North American Numbering Plan (NANP) for the single rate centre of Toronto, Ontario, Canada. Area code 416 is one of the original North American area codes created by the American Telephone and Telegraph Company (AT&T) in 1947. Area codes 647 and 437 are additional area codes for the same numbering plan area (NPA), forming an overlay numbering plan.
Area codes 519, 226 and 548 are the telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario.
M-21 is an east–west state trunkline highway in the US state of Michigan connecting the cities of Grand Rapids and Flint. The highway passes through rural farming country and several small towns along its course through the Lower Peninsula. Following the course of a handful of rivers, M-21 also connects some of the state's freeways like Interstate 96 (I-96), US Highway 127 (US 127) and I-75. The highway is used by between 1,700 and 36,000 vehicles daily.
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 east of Holland Road.
Area codes 208 and 986 are the area codes in the North American Numbering Plan for all of Idaho. Area code 208 is one of the 86 original area codes created by AT&T in 1947. It was Idaho's sole area code until 2017, when 986 was added as an overlay plan for the entire state.
Area code 250 is a telephone area code in the North American Numbering Plan (NANP) for the Canadian province of British Columbia outside the Lower Mainland, including Vancouver Island–home to the provincial capital, Victoria–and the province's Interior region. In addition, the numbering plan area extends into the United States community of Hyder, Alaska, located along the Canada–United States border near the town of Stewart. The incumbent local exchange carriers that service the area code are Telus, Northwestel, and CityWest in the city of Prince Rupert.
Area code 604 is a telephone area code that serves southwestern British Columbia, Canada: the Lower Mainland, Sunshine Coast, Howe Sound / Sea to Sky Corridor, Fraser Valley and the lower Fraser Canyon regions. It primarily serves the city of Vancouver and surrounding regions.
Area codes 617 and 857 are the North American area codes serving Boston and several surrounding communities in Massachusetts—such as Brookline, Cambridge, Newton and Quincy.
Area code 616 is the North American Numbering Plan (NANP) area code for Greater Grand Rapids, Michigan. It also includes Holland, Greenville, and Grand Haven. It includes all of Kent and Ottawa counties, and parts of neighboring counties, including the western and central parts of Ionia County.
Area codes 610 and 484 are telephone area codes in the North American Numbering Plan (NANP) for the eastern and southeastern regions of the U.S. state of Pennsylvania. The numbering plan area (NPA) includes regions to the west of Philadelphia, along with the cities Allentown, Bethlehem, and Reading. It includes much of the Delaware Valley, including almost all of Delaware County, most of the Philadelphia Main Line, and all of the Lehigh Valley.
Area code 517 is the area code which serves the south central portion of the Lower Peninsula of Michigan, centered on the state capital, Lansing. Other notable cities within 517 include Charlotte, Mason, Eaton Rapids, East Lansing, Holt, Jackson, Albion, Howell, Coldwater, Adrian, Blissfield, and Hillsdale.
Area codes 248 and 947 are area codes in the North American Numbering Plan (NANP) for Oakland County in the U.S. state of Michigan. The area codes also serve portions of Livonia and Northville, both located in Wayne County. The rest of Wayne County, including Detroit, located to the southeast, is serviced by area codes 313 and 734.
Area code 586 is the telephone area code serving much of Macomb County, Michigan, introduced in 2001 as a split from area code 810. Its territory was originally part of area code 313.
Area code 810 is one of the area codes in Michigan area code in the North American Numbering Plan (NANP) for East Central Michigan. The numbering plan area (NPA) comprises the cities of Flint, Lapeer, Port Huron, and the southern portion of the Thumb.
The following outline provides an overview of and topical guide to the U.S. state of Michigan:
