Area Code 304-203 located in FAIRMONT, MARION, WV, more detail is as below. Place NPA (Numbering Plan Area) : 304 NXX (Local Number Prefix) : 203 City : FAIRMONT County : MARION State : WV (West Virginia) NXX Use Type : Wireless NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 54049 LATA (Local Access Transport Area) : 256 Rate Center : CLARKSBURG ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 26554 Other Information NPANXX : 304203 County Population : 0 Switch CLLI (Common Language Location Identifier) : CLBGWVMAX3X MSA CBSA (Core Based Statistical Area) : Fairmont, WV MSA CBSA Code (Core Based Statistical Area) : 21900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : CLARKSBURG Latitude : 39.2740 Longitude : -80.3434 ‹ previous : 304-202 next › : 304-204 Telephone Number List 304-203-0000 ~ 304-203-9999