603 Area Code Information
State: NH
Largest City in Area: MANCHESTER
Where is Area Code 603? Area code (603) is in the state of NH. The PeopleSearchNow database has 3,169,452 records on file with a phone number in the area code of (603). 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
- 03038
- 03051
- 03053
- 03054
- 03060
- 03062
- 03063
- 03064
- 03079
- 03102
- 03103
- 03104
- 03110
- 03246
- 03301
- 03431
- 03801
- 03820
- 03833
- 03867