New Hampshire Area Codes
1 active area code · Manchester · Population around 652,750
New Hampshire has 1 active area code, serving cities like Manchester, Nashua, and Concord. A single area code covers the whole state. Each code below links to its cities, carriers, timezone, and coverage map.
New Hampshire Area Code Map
What area codes does New Hampshire have?
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Frequently Asked Questions
How many area codes does New Hampshire have?
New Hampshire has 1 active area code: 603.
What is the main area code for New Hampshire?
The 603 area code is among the primary area codes for New Hampshire, serving Manchester and surrounding communities.
What are the largest cities in New Hampshire?
The largest cities in New Hampshire include Manchester, Nashua, Concord, Dover, Rochester.
What is the total population of New Hampshire?
New Hampshire has an estimated total population of 652,750 based on US Census PEP 2024 data.