# IsUSZipCode

| **Name**    | ***IsUSZipCode***                                                                                                                                                                               |
| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Syntax      | IsUSZipCode (String str)                                                                                                                                                                        |
| Purpose     | To return a Boolean value indicating whether the specified string is in a valid Zip Code format.                                                                                                |
| Description | Checks whether a given value represents a valid United States Zip Code format. This method tests format and digits to determine whether the given string represents a valid US Zip code format. |
| Return Type | Boolean                                                                                                                                                                                         |
| Parameter   | str \[System.String] – Value to be checked.                                                                                                                                                     |

![](/files/Qez3p1VL5nX2DDNOoQFt)

**Example**

In this example, we will pass the required parameter to the function transformation object using a *Variables* object.

Where,

*str* = 90001

![](/files/Zp9IpyMe9OmxOjnb0xOK)

In the output window, you can see that Astera has returned “True”, as the specified string matches a valid US Zip Code format.

![](/files/JBpSn6UEiKfExGGhBvHA)


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