Area Code 315-389 located in WINTHROP, SAINT LAWRENCE, NY, more detail is as below. Place NPA (Numbering Plan Area) : 315 NXX (Local Number Prefix) : 389 City : WINTHROP County : SAINT LAWRENCE State : NY (New York) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 36089 LATA (Local Access Transport Area) : 136 Rate Center : WINTHROP ZIP Code Count : 485 ZIP Code Frequency : 38 ZIP Code : 13697 Other Information NPANXX : 315389 County Population : 0 Switch CLLI (Common Language Location Identifier) : WNTHNYXADS0 MSA CBSA (Core Based Statistical Area) : Ogdensburg-Massena, NY MSA CBSA Code (Core Based Statistical Area) : 36300 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NICHOLVILLE TELEPHONE CO., INC. OCN (Operating Company Number) : 0108 Coverage Area Name : WINTHROP Latitude : 44.8046 Longitude : -74.7773 ‹ previous : 315-388 next › : 315-389 Telephone Number List 315-389-0000 ~ 315-389-9999