Area Code 315-204 located in WEST WINFIELD, HERKIMER, NY, more detail is as below. Place NPA (Numbering Plan Area) : 315 NXX (Local Number Prefix) : 204 City : WEST WINFIELD County : HERKIMER State : NY (New York) NXX Use Type : Landline NXX Intro Version : 1/24/2007 FIPS (Federal Information Processing Standards) : 36043 LATA (Local Access Transport Area) : 136 Rate Center : W WINFIELD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 13491 Other Information NPANXX : 315204 County Population : 0 Switch CLLI (Common Language Location Identifier) : SYRCNYSUXFY MSA CBSA (Core Based Statistical Area) : Utica-Rome, NY MSA CBSA Code (Core Based Statistical Area) : 46540 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : TIME WARNER CABLE INFO SVCE (NEW YORK) LLC-NY OCN (Operating Company Number) : 532D Coverage Area Name : WINFIELD Latitude : 42.8834 Longitude : -75.1936 ‹ previous : 315-203 next › : 315-205 Telephone Number List 315-204-0000 ~ 315-204-9999