Geographic Regions and Area Codes in Michigan

Michigan is divided into several distinct geographic regions, each with its own unique characteristics and area codes. The state is known for its two peninsulas: the Upper Peninsula and the Lower Peninsula. The Lower Peninsula is further divided into regions such as Northwestern Lower Michigan, Northern Metro Detroit, Southwestern Michigan, South Central Michigan, Northeastern Metro Detroit, Western Michigan, Western and Down River/Southeastern Michigan Metro Detroit, Southern Flint/Tri-Cities and The Thumb, and Northern, Flint/Tri-Cities and Northeastern Lower Michigan. Here are some of the key area codes in Michigan:

  • 231: Northwestern Lower Michigan (Traverse City, Ludington, Muskegon, Petoskey, Big Rapids, Cheboygan)
  • 248: Northern Metro Detroit (Oakland County, Northville, Northville Township)
  • 269: Southwestern Michigan (Battle Creek, Benton Harbor, Allegan, Hastings, Kalamazoo, St Joseph)
  • 313: Wayne County (Detroit, Dearborn, Redford Township, Grosse Pointes)
  • 517: South Central Michigan (Lansing, East Lansing, Jackson, Charlotte, Coldwater, Howell, Hillsdale, Adrian)
  • 586: Northeastern Metro Detroit (Macomb County)
  • 616: Western Michigan (Grand Rapids, Holland, Greenville, Grand Haven, Zeeland, Ionia)
  • 734: Western and Down River/Southeastern Michigan Metro Detroit (Ann Arbor, Monroe, Wayne, Ypsilanti)
  • 810: Southern Flint/Tri-Cities and The Thumb (Port Huron, Flint, Flushing, Otisville, Davison, Brighton, Sandusky, Lapeer)
  • 906: Upper Peninsula (Marquette, Sault Ste. Marie, St. Ignace, Escanaba, Iron Mountain, Munising, Mackinac Island)
  • 947: Northern Metro Detroit (Oakland County, Northville, Northville Township)
  • 989: Northern, Flint/Tri-Cities and Northeastern Lower Michigan (Alpena, Oscoda, Tawas City, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso, Gaylord, Bad Axe, Sebewaing, Unionville)