Alton zip code
Zip code in Alton, IL
The location Alton belongs to Madison County, state of Illinois. Alton has been assigned with the zip code 62002.
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 |
|---|---|---|
| 62002 | STANDARD | 25,130 |
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