Colby zip code
Zip code in Colby, WI
The location Colby belongs to Clark County, state of Wisconsin. Colby has been assigned with the zip code 54421.
Colby 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 |
|---|---|---|
| 54421 | STANDARD | 3,110 |
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