Area code 231
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
[edit | edit source]Area code 231 was created in June 1999 by an area code split of area code 616, which had served the entire western half of the Lower Peninsula, extending west from the north-south line aligned with the Mackinac Bridge. 231 was carved out of the northern part. It is centered around the western half of the territory generally defined as Northern Michigan. It also includes Muskegon, which is almost universally counted as part of West Michigan.
Service area
[edit | edit source]The numbering plan area includes the following communities:
Area code 231 also serves Bois Blanc Township, which is in the Upper Peninsula, and is the only municipality there using 231, while the rest uses 906.
External links
[edit | edit source]- Planning letter 167, which details 231's creation (PDF)
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- Map of Michigan area codes Archived 2008-06-30 at the Wayback Machine at North American Numbering Plan Administration's website
- List of exchanges from AreaCodeDownload.com, 231 Area Code
| North: 906 | ||
| West: Lake Michigan | 231 | East: 989 |
| South: 616 |
Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value).
 | This Michigan state location article is a stub. You can help Wikipedia by expanding it. |
 | This article related to a telephone area code is a stub. You can help Wikipedia by expanding it. |