New Hampshire Phone Number Lookup

New Hampshire Area Codes and Their Locations

New Hampshire is a small state with just one area code that was one of the original 86 codes introduced in 1947. The state has not required another area code because the small population has not exhausted the current area code. Identifying New Hampshire’s area code will save residents from scam callers who are outside the state but claim to be calling from New Hampshire. New Hampshire residents can identify unknown callers, whether they are out of state or fellow residents, by running their numbers through reverse phone lookup searches.

The area code serving the state of New Hampshire is:

603 - Location

Who Controls New Hampshire Area Codes?

While the FCC, through NANPA, assigns area codes to states, some overseeing functions over the implementation of a new area code have been assigned to individual states. In New Hampshire, the New Hampshire Public Utilities Commission (NHPUC) controls how a new area code will be introduced.

Where is Area Code 603?

Area code 603 was one of the original area codes introduced in 1947. It currently serves the whole of New Hampshire. Hillsborough County, Rockingham County, Merrimack County, Strafford County, Cheshire County, Grafton County, Belknap County, Carroll County, and Sullivan County are all under this area code. This area code also serves major cities like Manchester, Nashua, Concord, Dover, Rochester, Keene, Perry, Portsmouth, Laconia, Claremont, Lebanon, Somersworth, Londonderry, Durham, Berlin, and Hampton.