Retningsnumre i Grantham
| 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 |
|---|---|---|---|---|---|
| Enfield Center | New Hampshire | USA | — | 603 | 03749 |
| Georges Mills | New Hampshire | USA | — | 603 | 03751 |
| Guild | New Hampshire | USA | — | 603 | 03754 |
| Springfield | New Hampshire | USA | 1,007 | 603 | — |
| Sunapee | New Hampshire | USA | 3,254 | 603 | — |