Colby zipcode
| City | Colby |
| ZIP Code | 54421 |
| Type | Standard |
| State Code | WI |
| State | Wisconsin |
ZIP code of Colby is 54421. This place is located in Wisconsin state in US. To send any postal service to Colby, you must use 54421 zipcode.
| City | Colby |
| ZIP Code | 54421 |
| Type | Standard |
| State Code | WI |
| State | Wisconsin |
ZIP code of Colby is 54421. This place is located in Wisconsin state in US. To send any postal service to Colby, you must use 54421 zipcode.
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