Area Code 231-313 located in PETOSKEY, EMMET, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 313 City : PETOSKEY County : EMMET State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 26047 LATA (Local Access Transport Area) : 348 Rate Center : TRAVERSECY ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 49770 Other Information NPANXX : 231313 County Population : 0 Switch CLLI (Common Language Location Identifier) : TRCYMICICM0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : TRAVERSE CITY Latitude : 44.7682 Longitude : -85.6085 ‹ previous : 231-312 next › : 231-313 Telephone Number List 231-313-0000 ~ 231-313-9999