New Hampshire Area Codes: Complete List With Cities Served
New Hampshire is served by 1 area code. Because the whole state shares 603, it is one of the simplest numbering setups in the country.
New Hampshire area code list
| Area code | Main places served |
|---|---|
| 603 | Manchester, Nashua, Concord and Portsmouth |
Place names come from ZIP code records linked to each area code, so they show where a code is most common rather than exact boundaries.
Area codes by major city
| City | Area codes |
|---|---|
| Manchester | 603 |
| Nashua | 603 |
| Rochester | 603 |
| Concord | 603 |
| Lebanon | 603 |
| Acworth | 603 |
| Alstead | 603 |
| Alton | 603 |
| Alton Bay | 603 |
| Amherst | 603 |
| Andover | 603 |
| Antrim | 603 |
| Ashland | 603 |
| Ashuelot | 603 |
| Atkinson | 603 |
How to format a New Hampshire phone number
US numbers have ten digits: the area code, a three-digit exchange and a four-digit line number. A New Hampshire number is written as (603) 555-0123 for display, or +16035550123 in E.164 format for storage.
Safe numbers for testing
The range 555-0100 to 555-0199 is reserved for fictional use in every area code. Our generator combines these with real local area codes, so test data looks right without reaching a real person.
Create realistic New Hampshire addresses for testing, with real cities, counties and ZIP codes.
Generate New Hampshire addresses