New Hampshire area codes: full list with cities and how to dial
New Hampshire has roughly 1.4 million residents, and its phone numbers are organized into 1 area code under the North American Numbering Plan. New Hampshire is covered by a single area code, 603, which serves the entire state including Manchester. Every New Hampshire number is dialed as +1, then the three-digit area code, then a seven-digit local number. With Phonecall you can call any New Hampshire landline or mobile straight from your browser. There is no app to install, no SIM, and no subscription. You see the per-minute rate before you dial, billing is by the second, and your first call is free.
Call New Hampshire from your browserAll New Hampshire area codes
1 active geographic area code in service across New Hampshire.
| Area code | Primary cities and region | Example number |
|---|---|---|
| 603 | Entire state of New Hampshire (Manchester, Nashua, Concord, Portsmouth) | +1 (603) 555-0100 |
Example numbers use the reserved 555-0100 range and are for illustration only.
How to call New Hampshire from abroad
Every New Hampshire phone number is part of the +1 North American calling zone. To reach one from outside the United States, dial three parts in order:
- 1. Your exit code, then +1 — the US country code.
- 2. The three-digit area code — for example 603 for the Manchester area.
- 3. The seven-digit local number.
Example, full international format:
+1 (603) 555-0100
With Phonecall you skip the exit codes entirely. Enter the number in international format and we connect the call from your browser, billed by the second from $0.03/min, with no SIM, no app, and no monthly fee.
Why New Hampshire has one area code
New Hampshire has a single statewide area code with no overlays.
When a region runs low on available numbers, the phone system adds capacity in one of two ways. A split divides the old region geographically and gives part of it a brand-new area code. An overlay keeps the existing code and layers a second one on top of the same area, which is why a single city can have several area codes and why ten-digit dialing becomes the norm. Either way, the number you dial always stays the same length: +1, the area code, then seven digits.
1
active area code
~1.4 million
residents (approx.)
Manchester
largest city
Calling New Hampshire with Phonecall
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The per-minute price for any New Hampshire number shows up front, so there are no surprises on your bill.
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You pay only for the time you actually talk, charged per second rather than rounded up to the minute.
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New Hampshire area codes: frequently asked questions
What is the main area code for Manchester?
Manchester, the largest city in New Hampshire, is primarily served by area code 603 (Entire state of New Hampshire (Manchester, Nashua, Concord, Portsmouth)). It is the only area code in New Hampshire.
How do I dial a New Hampshire number from another country?
Dial your international exit code, then +1 (the US country code), then the three-digit New Hampshire area code, then the seven-digit local number. With Phonecall you just enter the number in international format and we connect the call from your browser, from $0.03/min.
How many area codes does New Hampshire have?
New Hampshire currently has 1 active geographic area code in service. New Hampshire has a single statewide area code with no overlays.