New Castle, NH
ZIP Codes in New Castle, New Hampshire
January 21, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 03854 | 904 | 43.0621, -70.7171 |
New Castle has 1 ZIP code
ZIP Codes in New Castle, New Hampshire
January 21, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 03854 | 904 | 43.0621, -70.7171 |