Alton zip code
Zip code in Alton, NH
The location Alton belongs to Belknap County, state of New Hampshire. Alton has been assigned with the zip code 03809.
Alton is the official name of the location so if you want to use the US Postal Service you must use that name.
| Zip code | Type | Population |
|---|---|---|
| 03809 | STANDARD | 3,650 |
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