New Castle zipcode
| City | New Castle |
| ZIP Code | 03854 |
| Type | PO Box |
| State Code | NH |
| State | New Hampshire |
ZIP code of New Castle is 03854. This place is located in New Hampshire state in US. To send any postal service to New Castle, you must use 03854 zipcode.
You should avoid following 1 city name of New Hampshire to be used with the ZIP code 03854.
- Newcastle, NH