Midwest region · Eastern Time
Michigan Area Codes
All 13 area codes serving Michigan, the cities each one covers, and which are overlays. Michigan is served by 13 area codes in the Eastern Time zone.
Last updated October 1, 2026
Full list
Every Michigan area code
Michigan is served by 13 area codes in the Eastern Time zone. 2 of these are overlay codes layered over busy metros; the rest are geographic codes. Eastern statewide except four Upper Peninsula counties near Wisconsin (Central).
| Code | Area served | Type | In service |
|---|---|---|---|
| 231 | Western and northern Lower Michigan, including Muskegon and Traverse City | Geographic | Since 1999 |
| 248 | Oakland County suburbs north and northwest of Detroit | Geographic | Since 1997 |
| 269 | Southwest Michigan including Kalamazoo, Battle Creek and Benton Harbor | Geographic | Since 2002 |
| 313 | City of Detroit and nearby Wayne County communities | Geographic | Since 1947 |
| 517 | South-central Michigan including Lansing, Jackson and Adrian | Geographic | Since 1947 |
| 586 | Macomb County suburbs northeast of Detroit | Geographic | Since 2001 |
| 616 | Grand Rapids metro and western Michigan lakeshore around Holland and Grand Haven | Geographic | Since 1947 |
| 679 | City of Detroit and nearby Wayne County communities | Overlay | Since 2025 |
| 734 | Western Wayne, Washtenaw and Monroe counties in southeast Michigan | Geographic | Since 1997 |
| 810 | Eastern Michigan including Flint, Port Huron and the Thumb area | Geographic | Since 1993 |
| 906 | The entire Upper Peninsula of Michigan | Geographic | Since 1961 |
| 947 | Oakland County suburbs north and northwest of Detroit | Overlay | Since 2002 |
| 989 | Central and northeastern Lower Michigan including Saginaw, Bay City and Midland | Geographic | Since 2001 |
Area codes and dialing in Michigan
Michigan's 13 area codes mix older geographic codes with newer overlays. The busiest metros — around Ann Arbor, Detroit, Flint — carry the most numbers and rely on overlays, which is why 10-digit dialing is required there. Quieter parts of the state may still use a single code. The original code in the Michigan list is 231 (Muskegon).
Whenever a Michigan region runs low on numbers, a new overlay is added on top rather than splitting the map, so existing customers keep their numbers. See 10-digit dialing for what that means in practice, or the newest area codes for upcoming changes.
Cities with multiple area codes
These Michigan metros are served by an overlay of two or more codes, so 10-digit dialing applies: Detroit · Troy.
Browse Michigan another way
Explore by Midwest region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
Michigan area code FAQ
How many area codes does Michigan have?
Michigan currently has 13 area codes: 231, 248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989.
What is the main area code for Michigan?
The busiest metro in Michigan is served by the 231 code. Major cities include Ann Arbor, Detroit, Flint, Grand Rapids, Kalamazoo.
Does Michigan require 10-digit dialing?
Yes, in its overlay metros you must dial all 10 digits. Ten-digit dialing is the national standard.