About ZIP code 03857
The ZIP code 03857 routes mail to Newmarket in the New Hampshire region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States ยท ZIP code
03857 - Newmarket
ZIP code 03857 is Newmarket in New Hampshire, United States.
| ZIP code | 03857 |
| Place | Newmarket |
| Region | New Hampshire |
| District | Rockingham |
| Country | United States (US) |
| Coordinates | 43.0726, -70.9553 (map) |