Newmarket, NH zip code
Newmarket, New Hampshire uses one zip code: 03857. Most of it is in Rockingham County. Together these zip codes are home to about 9.5K people.
Zip codes
1
Population
9.5K
All zips combined
Largest zip
03857
9,463 residents
Zip codes in Newmarket
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 03857 | 9,463 | $100,845 |