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Area code 231 is a telephone area code in the North American Numbering Plan (NANP) for the northwestern portion of the Lower Peninsula in the U.S. state of Michigan, History.
Area code 231 serves the state of Michigan. This area code was assigned on March 11th, 1999. On June 5th, 1999 it went into service. 231 is a General Purpose Code. Dialing pattern for local calls within the same NPA (area code) is 7D.
10 paź 2024 · 231 is an area code located in the state of Michigan, US. The largest city it serves is Muskegon. Location, time zone and map of the 231 area code
1 paź 2024 · Area Code 231 is located in Michigan. It covers 106 cities, including Muskegon, Allendale, Traverse City, Cadillac, and Big Rapids. It also covers 22 counties, including Muskegon County, Grand Traverse County, Emmet County, Mecosta County, and Antrim County.
Area code 231 is located in Michigan. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
The 231 Area Code is located in the state of Michigan. Area Code 231 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 5,719,884 unique phone numbers and 189,660 individuals near the cities of Muskegon, Traverse City, and Cadillac.
