Area code 810
telephone area code in east-central Michigan
Area code 810 is a telephone area code in the North American Numbering Plan for the east-central part in the U.S. state of Michigan. The numbering plan area (NPA) comprises the cities of Flint, Lapeer, Port Huron, and the southern portion of the Thumb.
History
Area code 810 was created on December 1, 1993, in a mid-eastern section of Michigan, when numbering plan area 313 in the southeaster part of the state was divided. A permissive dialing period ended on August 10, 1994 when both area codes could be dialed to reach destinations. The initial numbering plan area included the counties of Oakland, Macomb, Genesee, Lapeer, St. Clair, and Sanilac as well as small sections of Saginaw, Shiawassee, Livingston, Washtenaw, and Wayne counties north of Detroit. Most of Washtenaw County, all of Monroe County, and the southern and western portions of Wayne County (including the City of Detroit) remained in the 313 area code. The split created Michigan's first new area code since 1961, and permitted interchangeable central office codes.
Within only a year of the split, demand for telephone numbers increased such that there were plans for a new area code. Ameritech once again applied to the North American Numbering Plan Administrator for additional relief.
This brief starts where responsible research should: with the source description of “Area code 810” as telephone area code in east-central Michigan. Everything that follows is an evidence route, not borrowed authority.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Feb 27, 2026. The linked authority identifier is Q4788612. Authority coordinates are 43.000, -83.000. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1993, 1994 and 1961.
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This entry incorporates text from “Area code 810” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.