Johnston zip code
Zip code in Johnston, IA
The location Johnston belongs to Polk County, state of Iowa. Johnston has been assigned with the zip code 50131.
Johnston is the official name of the location so if you want to use the US Postal Service you must use that name. You can also use any of the following names: Urbandale.
| Zip code | Type | Population |
|---|---|---|
| 50131 | STANDARD | 22,700 |
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