Area Code 603-774 located in BOW, MERRIMACK, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 774 City : BOW 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 : DUNBARTON ZIP Code Count : 298 ZIP Code Frequency : 22 ZIP Code : 03304 Other Information NPANXX : 603774 County Population : 0 Switch CLLI (Common Language Location Identifier) : DNTNNHXADS0 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 : DUNBARTON TELEPHONE COMPANY OCN (Operating Company Number) : 0043 Coverage Area Name : BOW Latitude : 43.1010 Longitude : -71.6145 ‹ previous : 603-773 next › : 603-774 Telephone Number List 603-774-0000 ~ 603-774-9999