Humboldt zipcode
| City | Humboldt |
| ZIP Code | 56731 |
| Type | PO Box |
| State Code | MN |
| State | Minnesota |
ZIP code of Humboldt is 56731. This place is located in Minnesota state in US. To send any postal service to Humboldt, you must use 56731 zipcode.
| City | Humboldt |
| ZIP Code | 56731 |
| Type | PO Box |
| State Code | MN |
| State | Minnesota |
ZIP code of Humboldt is 56731. This place is located in Minnesota state in US. To send any postal service to Humboldt, you must use 56731 zipcode.
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