Area code 603
The 603 area code belongs to the state of New Hampshire (NH) and some of the locations covered are Manchester, Nashua and more:
| State | Cities in area code 603 | Time Zone |
|---|---|---|
| NH New Hampshire |
Amherst, Atkinson, Barrington, Bedford, Berlin, Claremont, Concord, Derry, Dover, Durham, Goffstown, Hampton, Hanover, Hooksett, Keene, Laconia, Lebanon, Londonderry, Manchester, Merrimack, Milford, Nashua, Pelham, Portsmouth, Raymond, Rochester, Salem, Windham | EASTERN Current time is 02:33:43pm |