Area Code 603-909 located in CHARLESTOWN, SULLIVAN, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 909 City : CHARLESTOWN County : SULLIVAN State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 33019 Rate Center : CHARLESTN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03603 Other Information NPANXX : 603909 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHN1FF2 MSA CBSA (Core Based Statistical Area) : Claremont, NH MSA CBSA Code (Core Based Statistical Area) : 17200 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 603-908 next › : 603-910 Telephone Number List 603-909-0000 ~ 603-909-9999