This is a list of telephone area codes in the state of Michigan:
231 - Northwestern Lower Michigan: Traverse City, Ludington, Muskegon, Petoskey and Cheboygan
248 - Northern Metro Detroit: All of Oakland County, Northville, and most of Northville Township; overlays with area code 947
269 - Southwestern Michigan: Battle Creek, Benton Harbor, Allegan, Hastings, Kalamazoo, and St Joseph
313 - Wayne County: Detroit, Dearborn, Redford Township, and the Grosse Pointes
517 - South Central Michigan: Lansing, East Lansing, Jackson, Charlotte, Coldwater, Howell, Deerfield, and Addison
586 - Northeastern Metro Detroit: All of Macomb County
616 - Western Michigan: Grand Rapids, Holland, Greenville, Grand Haven, Zeeland, and Ionia
734 - Western and Down River/ Southeastern Michigan Metro Detroit: Ann Arbor, Monroe, Wayne, and Ypsilanti
810 - Southern Flint and The Thumb: Port Huron, Flint, Flushing, Otisville, Davison, Brighton, Sandusky, and Lapeer
906 - Upper Peninsula: Marquette, Sault Ste. Marie, St. Ignace, Escanaba, Iron Mountain, Munising, and Mackinac Island
947 - Northern Metro Detroit: All of Oakland County, Northville, and most of Northville Township; overlays with area code 248
989 - Central, Tri-Cities and Northeastern Lower Michigan]]: Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso, Gaylord, and Bad Axe
An additional planned area code is not yet in service:
679 - A future overlay with Area code 313
