Phone Numbers beginning with 603 Area Code

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603 Area code is in the state of New Hampshire. Manchester is the largest city in the area code (603).

Popular Cities in 603 Area Code

  • Manchester, NH
  • Nashua, NH
  • Concord, NH
  • Portsmouth, NH
  • Salem, NH
  • Dover, NH
  • Keene, NH
  • Bedford, NH
  • Londonderry, NH
  • Rochester, NH
  • Laconia, NH
  • Derry, NH
  • Merrimack, NH
  • Hudson, NH
  • Hampton, NH
  • Exeter, NH

Zip Codes in 603 Area Code

  • 3055
  • 3101
  • 3103
  • 3253
  • 3301
  • 3431
  • 3576
  • 3602
  • 3766
  • 3874
  • 30118
  • 35205
  • 46038
  • 49442
  • 59717
  • 61235
  • 80403