Area Codes
| 989 | Michigan (Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso and central Michigan) | More information at: Area Code 989 Phone Number Blocks
| 989 | Michigan (Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso and central Michigan) | More information at: Area Code 989 Phone Number Blocks