New Hampshire
603 Area Code
The 603 Area Code in New Hampshire includes 321 cities. The cities in this area code are listed below.
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Visit AreaCodeLookup.co for reverse phone number lookups, and find area code locations by US phone numbers, city or state.603 Area Code City Listings
- Acworth
- Albany
- Alexandria
- Allenstown
- Alstead
- Alton
- Alton (CDP)
- Amherst
- Amherst (CDP)
- Andover
- Antrim
- Antrim (CDP)
- Ashland
- Ashland (CDP)
- Atkinson
- Auburn
- Barnstead
- Barrington
- Bartlett
- Bartlett (CDP)
- Bath
- Bedford
- Belmont
- Belmont (CDP)
- Bennington
- Bennington (CDP)
- Benton
- Berlin
- Bethlehem
- Bethlehem (CDP)
- Blodgett Landing
- Boscawen
- Bow
- Bradford
- Bradford (CDP)
- Brentwood
- Bridgewater
- Bristol
- Bristol (CDP)
- Brookfield
- Brookline
- Campton
- Canaan
- Canaan (CDP)
- Candia
- Canterbury
- Carroll
- Center Harbor
- Center Ossipee
- Center Sandwich
- Charlestown
- Charlestown (CDP)
- Chatham
- Chester
- Chesterfield
- Chichester
- Claremont
- Clarksville
- Colebrook
- Colebrook (CDP)
- Columbia
- Concord
- Contoocook
- Conway
- Conway (CDP)
- Cornish
- Croydon
- Dalton
- Danbury
- Danville
- Deerfield
- Deering
- Derry
- Derry (CDP)
- Dorchester
- Dover
- Dublin
- Dummer
- Dunbarton
- Durham
- Durham (CDP)
- East Kingston
- East Merrimack
- Easton
- Eaton
- Effingham
- Ellsworth
- Enfield
- Enfield (CDP)
- Epping
- Epping (CDP)
- Epsom
- Errol
- Exeter
- Exeter (CDP)
- Farmington
- Farmington (CDP)
- Fitzwilliam
- Francestown
- Francestown (CDP)
- Franconia
- Franklin
- Freedom
- Fremont
- Gilford
- Gilmanton
- Gilsum
- Goffstown
- Goffstown (CDP)
- Gorham
- Gorham (CDP)
- Goshen
- Grafton
- Grantham
- Greenfield
- Greenland
- Greenville
- Greenville (CDP)
- Groton
- Groveton
- Hampstead
- Hampton
- Hampton (CDP)
- Hampton Beach
- Hampton Falls
- Hancock
- Hancock (CDP)
- Hanover
- Hanover (CDP)
- Harrisville
- Hart's Location
- Haverhill
- Hebron
- Henniker
- Henniker (CDP)
- Hill
- Hillsborough
- Hillsborough (CDP)
- Hinsdale
- Hinsdale (CDP)
- Holderness
- Hollis
- Hooksett
- Hooksett (CDP)
- Hopkinton
- Hudson
- Hudson (CDP)
- Jackson
- Jaffrey
- Jaffrey (CDP)
- Jefferson
- Keene
- Kensington
- Kingston
- Klondike Corner
- Laconia
- Lancaster
- Lancaster (CDP)
- Landaff
- Langdon
- Lebanon
- Lee
- Lempster
- Lincoln
- Lincoln (CDP)
- Lisbon
- Lisbon (CDP)
- Litchfield
- Littleton
- Littleton (CDP)
- Londonderry
- Londonderry (CDP)
- Loudon
- Loudon (CDP)
- Lyman
- Lyme
- Lyndeborough
- Madbury
- Madison
- Manchester
- Marlborough
- Marlborough (CDP)
- Marlow
- Mason
- Melvin Village
- Meredith
- Meredith (CDP)
- Merrimack
- Middleton
- Milan
- Milford
- Milford (CDP)
- Milton
- Milton (CDP)
- Milton Mills
- Monroe
- Mont Vernon
- Moultonborough
- Mountain Lakes
- Nashua
- Nelson
- New Boston
- New Boston (CDP)
- New Castle
- New Durham
- New Hampton
- New Hampton (CDP)
- New Ipswich
- New London
- New London (CDP)
- Newbury
- Newfields
- Newfields (CDP)
- Newington
- Newmarket
- Newmarket (CDP)
- Newport
- Newport (CDP)
- Newton
- North Conway
- North Hampton
- North Haverhill
- North Walpole
- North Woodstock
- Northfield
- Northumberland
- Northwood
- Nottingham
- Orange
- Orford
- Ossipee
- Pelham
- Pembroke
- Peterborough
- Peterborough (CDP)
- Piermont
- Pinardville
- Pittsburg
- Pittsfield
- Pittsfield (CDP)
- Plainfield
- Plainfield (CDP)
- Plaistow
- Plymouth
- Plymouth (CDP)
- Portsmouth
- Randolph
- Raymond
- Raymond (CDP)
- Richmond
- Rindge
- Rochester
- Rollinsford
- Roxbury
- Rumney
- Rye
- Salem
- Salisbury
- Sanbornton
- Sanbornville
- Sandown
- Sandwich
- Seabrook
- Seabrook Beach
- Sharon
- Shelburne
- Somersworth
- South Hampton
- South Hooksett
- Springfield
- Stark
- Stewartstown
- Stoddard
- Strafford
- Stratford
- Stratham
- Sugar Hill
- Suissevale
- Sullivan
- Sunapee
- Suncook
- Surry
- Sutton
- Swanzey
- Tamworth
- Temple
- Thornton
- Tilton
- Tilton Northfield
- Troy
- Troy (CDP)
- Tuftonboro
- Union
- Unity
- Wakefield
- Walpole
- Walpole (CDP)
- Warner
- Warner (CDP)
- Warren
- Washington
- Waterville Valley
- Weare
- Webster
- Wentworth
- West Stewartstown
- West Swanzey
- Westmoreland
- Whitefield
- Whitefield (CDP)
- Wilmot
- Wilton
- Wilton (CDP)
- Winchester
- Winchester (CDP)
- Windham
- Windsor
- Wolfeboro
- Wolfeboro (CDP)
- Woodstock
- Woodsville
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