Area Code 304-358 located in FRANKLIN, PENDLETON, WV, more detail is as below. Place NPA (Numbering Plan Area) : 304 NXX (Local Number Prefix) : 358 City : FRANKLIN County : PENDLETON State : WV (West Virginia) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 54071 LATA (Local Access Transport Area) : 256 Rate Center : FRANKLIN ZIP Code Count : 1744 ZIP Code Frequency : 79 ZIP Code : 26807 Other Information NPANXX : 304358 County Population : 0 Switch CLLI (Common Language Location Identifier) : FKLNWVFHRS1 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER WEST VIRGINIA INC. OCN (Operating Company Number) : 9214 Coverage Area Name : FRANKLIN Latitude : 38.6439 Longitude : -79.3304 ‹ previous : 304-358 next › : 304-359 Telephone Number List 304-358-0000 ~ 304-358-9999