St John zip code
Zip code in St John, IN
The location St John belongs to Lake County, state of Indiana. St John has been assigned with the zip code 46373.
The location name St John is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Saint John, the official name of the location.
| Zip code | Type | Population |
|---|---|---|
| 46373 | STANDARD | 17,140 |
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