New Hampshire Area Codes — 1 Codes
New Hampshire has 1 North American Numbering Plan area code, covering about 1,394,951 people. The table lists each code with its largest towns, population and overlaps.
All area codes in New Hampshire
| Area code | Largest towns | Population | ZIP codes | Overlaps |
|---|---|---|---|---|
| 603 | Manchester, Nashua, Concord | 1,394,951 | 281 | — |
Largest cities in New Hampshire
Manchester 603Nashua 603Concord 603Derry 603Dover 603Rochester 603Salem 603Merrimack 603Londonderry 603Hudson 603Keene 603Bedford 603Portsmouth 603Exeter 603Laconia 603Milford 603Hampton 603Windham 603Durham 603Hooksett 603Pelham 603Goffstown 603Claremont 603Suncook 603Somersworth 603Amherst 603Lebanon 603Raymond 603Hanover 603Barrington 603Newmarket 603Berlin 603Weare 603Tilton 603Franklin 603Hollis 603
Frequently asked questions
How many area codes does New Hampshire have?
New Hampshire uses 1 area codes.
What is the main area code in New Hampshire?
603 covers the largest population in New Hampshire.
How do I find the area code for a town?
Open the town in the city list above; each town page lists every area code assigned to it.