Clayton County Iowa is covered by a total of 23 ZIP Codes. There are 14 ZIP Codes in Clayton County that extend into adjacent counties (Allamakee County, Crawford County, Delaware County, Dubuque County, Fayette County, and Winneshiek County). Of the ZIP codes within or partially within Clayton County there are 22 Standard ZIP Codes and 1 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 Clayton 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 | |||
|---|---|---|---|---|---|
| Arlington | Standard | |||
| Colesburg | Standard | |||
| Edgewood | Standard | |||
| Elkader | Standard | |||
| Elkport | Standard | |||
| Farmersburg | Standard | |||
| Garber | Standard | |||
| Garnavillo | Standard | |||
| Greeley | Standard | |||
| Guttenberg | Standard | |||
| Holy Cross | Standard | |||
| North Buena Vista | Standard | |||
| Saint Olaf | Standard | |||
| Sherrill | Standard | |||
| Strawberry Point | Standard | |||
| Volga | Standard | |||
| Elgin | Standard | |||
| Luana | Standard | |||
| McGregor | Standard | |||
| Marquette | PO Box | |||
| Monona | Standard | |||
| Postville | Standard | |||
| Wadena | Standard |