61931 ZIP Code Humboldt, Illinois – USA
The ZIP code 61931 is assigned to Humboldt city, located in the Coles county that is part of the state of Illinois, IL, United States.
61931 zip code map
Postcode location
Humboldt Illinois,IL
State of 61931
Check all the Illinois ZIP Code list.
US ZIP Codes
Please check all state’s postal code in the United States.