Area Code 603-798 located in CHICHESTER, MERRIMACK, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 798 City : CHICHESTER County : MERRIMACK State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33013 LATA (Local Access Transport Area) : 122 Rate Center : CHICHESTER ZIP Code Count : 774 ZIP Code Frequency : 62 ZIP Code : 03258 Other Information NPANXX : 603798 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHCHNHXADS1 MSA CBSA (Core Based Statistical Area) : Concord, NH MSA CBSA Code (Core Based Statistical Area) : 18180 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : KEARSARGE TELEPHONE CO. OCN (Operating Company Number) : 0045 Coverage Area Name : SALISBURY Latitude : 43.2427 Longitude : -71.4065 ‹ previous : 603-798 next › : 603-799 Telephone Number List 603-798-0000 ~ 603-798-9999