Area Code 603

The 603 Area Code (or Area Code 603) is located in the state of NH. Area Code 603 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.44 million unique phone numbers and 5.14 million individuals near the city of Newmarket

Area Code 603 History

Following cities also use area code 603:

Alstead, Alton, Andover, Antrim, Ashland, Barrington, Bartlett, Bedford, Belmont, Berlin, Bethlehem, Boscawen, Bow, Bristol, Campton, Canaan, Candia, Canterbury, Center Conway, Center Tuftonboro, Charlestown, Chatham, Chester, Chesterfield, Chichester, Claremont, Colebrook, Concord, Contoocook, Conway, Cornish, Ctr Barnstead, Ctr Ossipee, Deerfield, Derry, Dover, Durham, E Rochester, East Kingston, Enfield, Epping, Epsom, Errol, Exeter, Farmington, Fitzwilliam, Franconia, Franklin, Gilmanton, Gilmanton Iron Works, Goffstown, Gorham, Grafton, Greenfield, Greenville, Groveton, Hampstead, Hampton, Hancock, Hanover, Harrisville, Henniker, Hillsboro, Hinsdale, Hollis, Jackson, Jaffrey, Jefferson, Keene, Kingston, Laconia, Lancaster, Lebanon, Lisbon, Littleton, Lyme, Madison, Manchester, Marlborough, Marlow, Meredith, Meriden, Merrimack, Milan, Milford, Milton Mills, Monroe, N Woodstock, Nashua, New Boston, New Durham, New London, Newbury, Newmarket, Newport, North Conway, North Sandwich, North Stratford, North Walpole, Northwood, Orford, Pelham, Penacook, Peterborough, Piermont, Pittsburg, Pittsfield, Plainfield, Plaistow, Plymouth, Portsmouth, Raymond, Rindge, Rochester, Rumney, Rye, Salem, Salisbury, Sanbornville, Seabrook, Somersworth, South Tamworth, Sullivan, Sunapee, Suncook, Tamworth, Tilton, Troy, W Lebanon, Walpole, Warner, Warren, Washington, Weare, Wentworth, West Chesterfield, Westmoreland, Whitefield, Wilton, Winchester, Wolfeboro, Wonalancet, Woodsville.

ZIP codes in Area Code 603: