Hancock County Illinois is covered by a total of 21 ZIP Codes. There are 10 ZIP Codes in Hancock County that extend into adjacent counties (Adams County, Henderson County, Mcdonough County, and Schuyler County). Of the ZIP codes within or partially within Hancock County there are 16 Standard ZIP Codes and 4 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Hancock County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Blandinsville | Standard | |||
| La Harpe | Standard | |||
| Augusta | Standard | |||
| Basco | Standard | |||
| Bowen | Standard | |||
| Carthage | Standard | |||
| Colchester | Standard | |||
| Colusa | PO Box | |||
| Dallas City | Standard | |||
| Elvaston | PO Box | |||
| Ferris | PO Box | |||
| Hamilton | Standard | |||
| Lima | PO Box | |||
| Mendon | Standard | |||
| Nauvoo | Standard | |||
| Niota | Standard | |||
| Plymouth | Standard | |||
| Sutter | Standard | |||
| Tennessee | Standard | |||
| Warsaw | Standard | |||
| West Point | Standard |