The page of 603 answers for the whole state; this list page stays out of search results (data rule).
U.S. state
New Hampshire area code
New Hampshire has one area code, 603, which covers the whole state. The newest is 603 (since 1947).
Local time in New Hampshire
Spam reports from Sep 23 – Oct 22, 2026
375 FTC complaints
Consumer reports, not verified by the FTC.
By area code- Codes1
- Code areas1
- Newest603 · 1947
- ComingNone listed
- Time zoneEastern Time
The code area
Codes in one card share the same territory (overlay). FTC reports from Sep 23 – Oct 22, 2026; runs out: NANPA forecast.
| Codes | Main place | FTC reports | Runs out | Codes |
|---|---|---|---|---|
| Manchester, NH | 375 | 2040 | 1 |
| Code | Main place | Since | Overlay with | Runs out | FTC reports |
|---|---|---|---|---|---|
| 603 | Manchester, NH | 1947 | — | 2040 | 375 |
Source: NANPA NRUF forecast, April 2026 edition.
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 23 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Spam call reports by area code
FTC complaints, Sep 23 – Oct 22, 2026
| Area code | Complaints | |
|---|---|---|
| 603 Manchester | 375 |
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 23 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Changes coming
NANPA lists no relief planning or new code for New Hampshire.
Source: NANPA, NPA database of Oct 24, 2026.