603 Area Code Phone Directory

Information for Area Code 603

State: NH
Largest City in Area: MANCHESTER

Where is Area Code 603?

Area code (603) is in the state of NH. Below, are the major cities in the area code (603).

Major Cities in 603

MANCHESTER, NH (541,034)
NASHUA, NH (371,318)
CONCORD, NH (221,118)
DERRY, NH (187,388)
DOVER, NH (178,575)
ROCHESTER, NH (153,545)
PORTSMOUTH, NH (134,737)
MERRIMACK, NH (133,043)
SALEM, NH (120,465)
HUDSON, NH (118,790)

Zip Codes in 603

03031
03032
03033
03034
03036
03037
03038
03040
03041
03042
03043
03044
03045
03046
03047
03048
03049
03051
03052
03053