Area Code 603-591 located in MANCHESTER, HILLSBOROUGH, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 591 City : MANCHESTER County : HILLSBOROUGH State : NH (New Hampshire) NXX Use Type : Wireless NXX Intro Version : 2000-10-31 FIPS (Federal Information Processing Standards) : 33011 LATA (Local Access Transport Area) : 122 Rate Center : MANCHESTER ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03102 Other Information NPANXX : 603591 County Population : 0 Switch CLLI (Common Language Location Identifier) : LDRYNHEMCM0 MSA CBSA (Core Based Statistical Area) : Manchester-Nashua, NH MSA CBSA Code (Core Based Statistical Area) : 31700 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : MANCHESTER Latitude : 42.9935 Longitude : -71.4608 ‹ previous : 603-590 next › : 603-591 Telephone Number List 603-591-0000 ~ 603-591-9999