Area Code 231-535 located in BOYNE CITY, CHARLEVOIX, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 535 City : BOYNE CITY 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 : WALLOON LK ZIP Code Count : 118 ZIP Code Frequency : 17 ZIP Code : 49712 Other Information NPANXX : 231535 County Population : 0 Switch CLLI (Common Language Location Identifier) : WNLKMIWLRS1 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERITECH MICHIGAN OCN (Operating Company Number) : 9323 Coverage Area Name : BOYNE CITY Latitude : 45.2698 Longitude : -84.9324 ‹ previous : 231-534 next › : 231-535 Telephone Number List 231-535-0000 ~ 231-535-9999