603 Area Code Phone Numbers

Where is Area Code 603?

The 603 area code is assigned to New Hampshire. Area code 603 is one of 0 three-digit telephone area codes in the USA. There are about 0 unique phone numbers and 0 individuals near the cities of Manchester,Nashua,Concord.

State:New Hampshire
Major City:Manchester
Current Time: 5:57pm

Major Cities in 603 Area Code

  • Manchester
  • Nashua
  • Concord
  • Dover
  • Rochester
  • Keene
  • Derry
  • Portsmouth
Area Code 603 Map
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PrefixUsagePrimary CityCarrierIntroduced