New Castle ZIP Codes — Rockingham County, NH
There is one unique ZIP code in New Castle, New Hampshire and it is 03854. Area code: 603.
1
ZIP codes
0.81
sq mi land
1.46
sq mi water
603
area code
New Castle, NH ZIP code map
ZIP codes for New Castle, NH (1)
| ZIP code | City | County | Map |
|---|---|---|---|
| 03854 | New Castle | Rockingham | View map |