Potosi zip code
Zip code in Potosi, MO
The location Potosi belongs to Washington County, state of Missouri. Potosi has been assigned with the zip code 63664.
Potosi 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 |
|---|---|---|
| 63664 | STANDARD | 6,710 |
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