The 231 area code belongs to the state of Michigan (MI) and some of the locations covered are Muskegon, Shelby, Traverse City and more:
| State | Larger cities in area code 231 | Time Zone |
|---|---|---|
| MI Michigan |
Big Rapids, Cadillac, Greenville, Ludington, Manistee, Muskegon, Petoskey, Shelby, Traverse City More cities |
EASTERN Current time is
04:59:55 PM |