Area Codes
| 517 | Michigan (Lansing, Jackson, Charlotte, Coldwater, Howell, Deerfield, Addison and south central Michigan) | More information at: Area Code 517 Phone Number Blocks
| 517 | Michigan (Lansing, Jackson, Charlotte, Coldwater, Howell, Deerfield, Addison and south central Michigan) | More information at: Area Code 517 Phone Number Blocks