Retningsnumre i Derry
| Retningsnummer▲ | By↕ | Administrativ Region↕ | Bybefolkning↕ | Land/region | Tidssone |
|---|---|---|---|---|---|
| 603 | — | New Hampshire | 1,316,216 | USA | America/New_York |
Nærliggende byer
| By | Region | Land | Befolkning | Retningsnumre | Postnumre |
|---|---|---|---|---|---|
| Chester | New Hampshire | USA | 5,236 | 603 | — |
| East Derry | New Hampshire | USA | — | 603 | 03041 |
| Londonderry | New Hampshire | USA | 11,037 | 603 | — |
| North Salem | New Hampshire | USA | — | 603 | 03073 |
| Windham | New Hampshire | USA | 13,091 | 603 | 03087 |