Search results
Area code 603 is the sole area code for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original 86 numbering plan areas in October 1947.
PrefixLocationCountyIntroduced200August 16, 2011203May 14, 2003204October 13, 1999205July 22, 19992 days ago · 603 is an area code located in the state of New Hampshire, US. The largest city it serves is Manchester. Location, time zone and map of the 603 area code
- UTC/GMT -4:00 hours
- EDT
- UTC/GMT -5:00 hours
Jun 1, 2024 · Area Code 603 is located in New Hampshire. It covers 163 cities, including Manchester, Nashua, Concord, Dover, and Rochester. It also covers 10 counties, including Hillsborough County, Rockingham County, Grafton County, Merrimack County, and Strafford County.
603 Area code map. Where is the area code 603 located in New Hampshire, United States? Area Code 603 coverage is shown in green. Find out 603 area code coverage, npa code 603 location.
Area code 603 is located in New Hampshire and includes Manchester. View the 603 area code map, major cities, location, timezone and more on TeraCodes.com.
Get information and map of 603 area code, New Hampshire which shows the counties covered in it. Also get the county list which belongs to area code 603.
Area code 603 serves the larger cities and communities of Amherst, Concord, Derry, Dover, Keene, Manchester, Nashua, Portsmouth and Rochester in addition to many smaller communities within the service area.
