Alton, NH zip code
Alton, New Hampshire uses one zip code: 03809. Most of it is in Belknap County. Together these zip codes are home to about 3.7K people.
Zip codes
1
Population
3.7K
All zips combined
Largest zip
03809
3,680 residents
Zip codes in Alton
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 03809 | 3,680 | $106,397 |