Poweshiek County Iowa is covered by a total of 12 ZIP Codes. There are 8 ZIP Codes in Poweshiek County that extend into adjacent counties (Iowa County, Jasper County, Mahaska County, Marshall County, and Tama County). Of the ZIP codes within or partially within Poweshiek County there are 12 Standard 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 Poweshiek 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 | |||
|---|---|---|---|---|---|
| Gilman | Standard | |||
| Grinnell | Standard | |||
| Malcom | Standard | |||
| Montezuma | Standard | |||
| New Sharon | Standard | |||
| Searsboro | Standard | |||
| Brooklyn | Standard | |||
| Chelsea | Standard | |||
| Guernsey | Standard | |||
| Deep River | Standard | |||
| Hartwick | Standard | |||
| Victor | Standard |