Area Code 231-347 located in CHARLEVOIX, CHARLEVOIX, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 347 City : CHARLEVOIX County : CHARLEVOIX State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 26029 LATA (Local Access Transport Area) : 348 Rate Center : PETOSKEY ZIP Code Count : 197 ZIP Code Frequency : 3 ZIP Code : 49720 Other Information NPANXX : 231347 County Population : 0 Switch CLLI (Common Language Location Identifier) : PTSKMIMNDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERITECH MICHIGAN OCN (Operating Company Number) : 9323 Coverage Area Name : PETOSKEY Latitude : 45.3738 Longitude : -84.9518 ‹ previous : 231-347 next › : 231-347 Telephone Number List 231-347-0000 ~ 231-347-9999