Area Code 603-323 located in CHOCORUA, CARROLL, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 323 City : CHOCORUA County : CARROLL State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33003 LATA (Local Access Transport Area) : 122 Rate Center : TAMWORTH ZIP Code Count : 328 ZIP Code Frequency : 19 ZIP Code : 03817 Other Information NPANXX : 603323 County Population : 0 Switch CLLI (Common Language Location Identifier) : TMWONHWHRS1 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 : TAMWORTH Latitude : 43.8561 Longitude : -71.2616 ‹ previous : 603-322 next › : 603-323 Telephone Number List 603-323-0000 ~ 603-323-9999