NEW HAMPSHIRE · AREA CODE GUIDE
603 area code location: Manchester and Nashua, New Hampshire
- Local date and time
- Eastern Time
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Download the 603 area code map
A printable area code 603 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
603 area code at a glance
- State
- New Hampshire
- Primary cities
- Manchester, Nashua, and Concord
- Established
- Population
- Largest community: Manchester, 116,818 (2025)Not an area-code population.
- Prefixes in service
- 752 as of 13 October 2026
An area code does not show where a caller is now.
History
Country and calling code: United States (+1).
New code planned: No, as of 22 September 2026.
Time zone
- Eastern Time
- Standard time UTC−05:00
- Daylight saving time UTC−04:00
Counties and cities covered
603 numbers are issued across 148 communities. These are telephone exchange areas, which follow the phone network rather than city limits, so a place can sit just outside the boundary of the town it is named for.
Counties of the communities we could place (the code may reach further): Merrimack County, Rockingham County, Cheshire County, Grafton County, Hillsborough County, Coos County, Strafford County, Belknap County, Carroll County, and Sullivan County.
- Manchester
- Nashua
- Concord
- Dover
- Rochester
- Salem
- Merrimack
- Bedford
- Keene
- Portsmouth
- Laconia
- Lebanon
- Pelham
- Claremont
- Somersworth
- Barrington
- Berlin
- Weare
- Hampstead
- Franklin
- Hollis
- Seabrook
- Plaistow
- Rindge
- Kingston
123 more communities
- Chester
- Epsom
- Barnstead
- Deerfield
- Northwood
- Boscawen
- Candia
- Tilton
- Sunapee
- Campton
- Dunbarton
- Tamworth
- New Durham
- Chichester
- Madison
- Fitzwilliam
- Canterbury
- Andover
- Sutton
- Alstead
- Westmoreland
- Greenfield
- Lyme
- Dublin
- Salisbury
- Rumney
- Milan
- Danbury
- Orford
- Washington
- Franconia
- Jackson
- Jefferson
- Center Harbor
- Harrisville
- South Hampton
- Monroe
- Pittsburg
- Warren
- Marlow
- Piermont
- Sullivan
- Chatham
- Errol
- Alton
- Antrim
- Ashland
- Bartlett
- Belmont
- Bethlehem
- Bradford
- Bretton Woods
- Bristol
- Canaan
- Center Barnstead
- Center Ossipee
- Center Sandwich
- Charlestown
- Colebrook
- Contoocook
- Conway
- Derry
- Durham
- East Conway
- Enfield
- Epping
- Exeter
- Farmington
- Gilmanton Iron Works
- Goffstown
- Gorham
- Greenville
- Groveton
- Hampton
- Hancock
- Hanover
- Henniker
- Hillsboro
- Hillsborough Upper Village
- Hinsdale
- Jaffrey
- Lancaster
- Lisbon
- Littleton
- Marlborough
- Melvin Village
- Meredith
- Meriden
- Milford
- Milton
- Milton Mills
- New Boston
- New London
- Newmarket
- Newport
- Nhisp
- North Conway
- North Stratford
- North Walpole
- North Woodstock
- Penacook
- Peterborough
- Pike
- Pittsfield
- Plainfield
- Plymouth
- Raymond
- Rye Beach
- Sanbornville
- Spofford
- Suncook
- Troy
- Twin Mountain
- Walpole
- Warner
- West Chesterfield
- West Lebanon
- West Stewartstown
- Whitefield
- Wilton
- Winchester
- Wolfeboro
- Woodsville
Notable places in 603
| Place | Where | What it is |
|---|---|---|
| Dartmouth College | 1.5 km from Hanover | University, 7,434 12-month enrollment (2023–24) |
| University of New Hampshire | 0.9 km from Durham | University, 14,676 12-month enrollment (2023–24) |
| Manchester–Boston Regional Airport | 5.9 km from Manchester | Airport |
| Berlin Regional Airport | 4.1 km from Milan | Airport |
| SNHU Arena | 1.5 km from Manchester | Arena |
| Dillant–Hopkins Airport | 4.9 km from Marlborough | Airport |
| Southern New Hampshire University | 6.1 km from Manchester | University, 255,134 12-month enrollment (2023–24) |
| Canobie Lake Park | 2.0 km from Salem | Amusement park |
| Saint-Gaudens National Historical Park | 3.9 km from Plainfield | National Historical Park |
| Currier Museum of Art | 1.7 km from Manchester | Museum |
Questions about 603
Where is the 603 area code?
603 is in New Hampshire. Its numbers are issued in Manchester, Nashua, Concord, and 145 other communities.
What time zone is area code 603 in?
603 is in Eastern Time. Daylight saving time is observed.
What cities are in the 603 area code?
Manchester, Nashua, Concord, Dover, and Rochester, and 143 other communities.
What state is area code 603 in?
Area code 603 is in New Hampshire.
What counties are covered by area code 603?
Area code 603 covers communities in Merrimack County, Rockingham County, Cheshire County, Grafton County, Hillsborough County, Coos County, Strafford County, Belknap County, Carroll County, and Sullivan County.
Is 603 a toll-free area code?
No. 603 is a geographic area code. The toll-free codes are 800, 833, 844, 855, 866, 877, and 888.
Sources: NANPA area code listing, NANPA places by area code, NANPA central office code assignments, U.S. Census Bureau population estimates, OMB metropolitan area delineations. Checked .
Business phone numbers in area code 603, answered by an AI agent
A local number for Manchester, Nashua, and Concord, New Hampshire, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.