Area Code 304-236 located in WILLIAMSON, MINGO, WV, more detail is as below. Place NPA (Numbering Plan Area) : 304 NXX (Local Number Prefix) : 236 City : WILLIAMSON County : MINGO State : WV (West Virginia) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 54059 LATA (Local Access Transport Area) : 254 Rate Center : WILLIAMSON ZIP Code Count : 8 ZIP Code Frequency : 67 ZIP Code : 25661 Other Information NPANXX : 304236 County Population : 0 Switch CLLI (Common Language Location Identifier) : WMSNWVLGRS1 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER WEST VIRGINIA INC. OCN (Operating Company Number) : 9214 Coverage Area Name : WILLIAMSON Latitude : 37.6744 Longitude : -82.2750 ‹ previous : 304-236 next › : 304-237 Telephone Number List 304-236-0000 ~ 304-236-9999