Area Code 276-378 located in MARION, SMYTH, VA, more detail is as below. Place NPA (Numbering Plan Area) : 276 NXX (Local Number Prefix) : 378 City : MARION County : SMYTH State : VA (Virginia) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 51173 LATA (Local Access Transport Area) : 956 Rate Center : MARION ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 24354 Other Information NPANXX : 276378 County Population : 0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : COMCAST PHONE OF VIRGINIA, INC. - VA OCN (Operating Company Number) : 7773 Coverage Area Name : MARION Latitude : 36.8324 Longitude : -81.5207 ‹ previous : 276-376 next › : 276-383 Telephone Number List 276-378-0000 ~ 276-378-9999