Area Code 603-291 located in GREENVILLE, HILLSBOROUGH, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 291 City : GREENVILLE County : HILLSBOROUGH State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 10/26/2006 FIPS (Federal Information Processing Standards) : 33011 LATA (Local Access Transport Area) : 122 Rate Center : GREENVILLE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 03048 Other Information NPANXX : 603291 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNCHNHIE2MD 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 : COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH OCN (Operating Company Number) : 4112 Coverage Area Name : GREENVILLE Latitude : 42.7723 Longitude : -71.8117 ‹ previous : 603-290 next › : 603-292 Telephone Number List 603-291-0000 ~ 603-291-9999