Marshall County Iowa is covered by a total of 19 ZIP Codes. There are 13 ZIP Codes in Marshall County that extend into adjacent counties (Grundy County, Hardin County, Jasper County, Poweshiek County, Story County, and Tama County). Of the ZIP codes within or partially within Marshall County there are 16 Standard ZIP Codes and 2 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 Marshall 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 | |||
|---|---|---|---|---|---|
| Albion | Standard | |||
| Clemons | Standard | |||
| Ferguson | PO Box | |||
| Gilman | Standard | |||
| Haverhill | Standard | |||
| Laurel | Standard | |||
| Le Grand | PO Box | |||
| Liscomb | Standard | |||
| Marshalltown | Standard | |||
| Melbourne | Standard | |||
| New Providence | Standard | |||
| Rhodes | Standard | |||
| Saint Anthony | Standard | |||
| State Center | Standard | |||
| Union | Standard | |||
| Beaman | Standard | |||
| Conrad | Standard | |||
| Garwin | Standard | |||
| Gladbrook | Standard |