Area Code 304-370 located in SALEM, HARRISON, WV, more detail is as below. Place NPA (Numbering Plan Area) : 304 NXX (Local Number Prefix) : 370 City : SALEM County : HARRISON State : WV (West Virginia) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 54033 LATA (Local Access Transport Area) : 256 Rate Center : SALEM ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 26426 Other Information NPANXX : 304370 County Population : 0 Switch CLLI (Common Language Location Identifier) : WLNGWVBGDS0 MSA CBSA (Core Based Statistical Area) : Clarksburg, WV MSA CBSA Code (Core Based Statistical Area) : 17220 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : GATEWAY TELECOM LLC DBA STRATUS WAVE COMM LLC WV OCN (Operating Company Number) : 2704 Coverage Area Name : SALEM Latitude : 39.2934 Longitude : -80.5589 ‹ previous : 304-369 next › : 304-371 Telephone Number List 304-370-0000 ~ 304-370-9999