libphonenumber API

603 Area Code

Manchester, NH and 97 other locations · United States

Country code +1 · ISO US

Area Code

603

Country

United States

Calling Code

+1

Timezone

America/New_York

Example 603 Number

A sample number from this area code, formatted three ways.

National International E.164
(603) 555-0123 +1 603-555-0123 +16035550123

Try it now

Pre-filled with a 603 sample number. Edit it and click "Try It" to see the parsed result.

Cities and Regions

Locations served by the 603 area code, according to Google's libphonenumber.

  • · Manchester, NH
  • · Nashua, NH
  • · Portsmouth, NH
  • · Dover, NH
  • · Salem, NH
  • · Keene, NH
  • · Exeter, NH
  • · Laconia, NH
  • · Merrimack, NH
  • · Lebanon, NH
  • · Hampton, NH
  • · Rochester, NH
  • · Concord, NH
  • · Claremont, NH
  • · Bedford, NH
  • · Durham, NH
  • · Derry, NH
  • · Plaistow, NH
  • · Hanover, NH
  • · Moultonborough, NH
  • · Marlborough, NH
  • · Sunapee, NH
  • · Walpole, NH
  • · Farmington, NH
  • · Berlin, NH
  • · Woodsville, NH
  • · Lincoln, NH
  • · Bristol, NH
  • · Epsom, NH
  • · Campton, NH
  • · Somersworth, NH
  • · Northwood, NH
  • · Epping, NH
  • · Milford, NH
  • · North Hampton, NH
  • · Barrington, NH
  • · Newmarket, NH
  • · Wilton, NH
  • · Ashland, NH
  • · Alton, NH
  • · New Ipswich, NH
  • · Chester, NH
  • · Newport, NH
  • · Raymond, NH
  • · Rindge, NH
  • · Lisbon, NH
  • · Whitefield, NH
  • · Alstead, NH
  • · Peterborough, NH
  • · Charlestown, NH
  • · Franklin, NH
  • · Franconia, NH
  • · Chichester, NH
  • · Lancaster, NH
  • · North Haverhill, NH
  • · Bradford, NH
  • · Rumney, NH
  • · Dunbarton, NH
  • · Hillsboro, NH
  • · Deerfield, NH
  • · Warner, NH
  • · Conway, NH
  • · Littleton, NH
  • · Pittsfield, NH
  • · Henniker, NH
  • · Jackson, NH
  • · Atkinson, NH
  • · North Conway, NH
  • · Hampstead, NH
  • · Tamworth, NH
  • · West Lebanon, NH
  • · Gilford, NH
  • · Tilton, NH
  • · Meredith, NH
  • · Belmont, NH
  • · Winchester, NH
  • · Colebrook, NH
  • · New Hampshire
  • · Kingston, NH
  • · Groveton, NH
  • · Pelham, NH
  • · Enfield, NH
  • · Antrim, NH
  • · Fitzwilliam, NH
  • · Wolfeboro, NH
  • · Greenfield, NH
  • · Plymouth, NH
  • · Jaffrey, NH
  • · Weare, NH
  • · New London, NH
  • · Canaan, NH
  • · Sanbornville, NH
  • · Goffstown, NH
  • · New Boston, NH
  • · Candia, NH
  • · Seabrook, NH
  • · Gorham, NH
  • · Hollis, NH

How to Dial United States Numbers

From abroad

Dial +1 followed by the national number, dropping any leading 1.

Within United States

Dial 1 before the local number to make a domestic call.

Dialing out of United States

Dial 011 followed by the destination country code and number.

Nearby United States Area Codes

View all United States area codes →

Frequently Asked Questions

Where is the 603 area code?

└ The 603 area code covers Manchester, NH in United States.

What timezone is the 603 area code in?

└ Numbers in the 603 area code are in the America/New_York timezone.

How do I dial a 603 number?

└ From abroad, dial +1 603 followed by the local number. Within United States, dial 1603 before the local number.