Area Code 603-477 located in MILTON MILLS, STRAFFORD, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 477 City : MILTON MILLS County : STRAFFORD State : NH (New Hampshire) NXX Use Type : Wireless NXX Intro Version : 1999-02-27 FIPS (Federal Information Processing Standards) : 33017 LATA (Local Access Transport Area) : 122 Rate Center : CLAREMONT ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 03852 Other Information NPANXX : 603477 County Population : 0 Switch CLLI (Common Language Location Identifier) : MRMCNHGICM0 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 : UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE OCN (Operating Company Number) : 6290 Coverage Area Name : CLAREMONT Latitude : 43.3721 Longitude : -72.3359 ‹ previous : 603-476 next › : 603-478 Telephone Number List 603-477-0000 ~ 603-477-9999