Newmarket, NH
ZIP Codes in Newmarket, New Hampshire
January 21, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 03857 | 9,400 | 43.0709, -70.9469 |
Newmarket has 1 ZIP code
ZIP Codes in Newmarket, New Hampshire
January 21, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 03857 | 9,400 | 43.0709, -70.9469 |