Area Code 603-755 located in MILTON, STRAFFORD, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 755 City : MILTON County : STRAFFORD State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33017 LATA (Local Access Transport Area) : 122 Rate Center : FARMINGTON ZIP Code Count : 156 ZIP Code Frequency : 7 ZIP Code : 03851 Other Information NPANXX : 603755 County Population : 0 Switch CLLI (Common Language Location Identifier) : FRTNNHMGRS1 MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH OCN (Operating Company Number) : 5113 Coverage Area Name : FARMINGTON Latitude : 43.3872 Longitude : -71.0633 ‹ previous : 603-755 next › : 603-755 Telephone Number List 603-755-0000 ~ 603-755-9999