Humboldt zipcode
| City | Humboldt |
| ZIP Code | 61931 |
| Type | Standard |
| State Code | IL |
| State | Illinois |
ZIP code of Humboldt is 61931. This place is located in Illinois state in US. To send any postal service to Humboldt, you must use 61931 zipcode.
| City | Humboldt |
| ZIP Code | 61931 |
| Type | Standard |
| State Code | IL |
| State | Illinois |
ZIP code of Humboldt is 61931. This place is located in Illinois state in US. To send any postal service to Humboldt, you must use 61931 zipcode.
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