Handy Regular Expressions(RegEx) - Zip/Postal code validation for US and Canada

Zip code validation for US and Canada is most common validation required for any web site where you have address input. Here is the handy regular expressions, which can be used for Zip/Postal code validation on your web page.

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1. Separate address forms for US/Canada


If you have separate address entry forms for US and Canada then you can use following regular expressions to validate the zip/postal code in your forms.

For US Zip code validation Use below regular Expression



 ^([0-9]{5})$




For Canada Postal code validation Use below regular Expression to validate the zip/postal code in your form.



 ^[ABCEGHJKLMNPRSTVXYabceghjklmnprstvxy]{1}\d{1}[A-Za-z]{1} *\d{1}[A-Za-z]{1}\d{1}$




2. Single Address entry form for US and Canada


If you have a common form for US and Canada Address entry then use below Regular expression, which is going to allow US Zip code and Canada Postal Code in same field.


For US zip code & Canada Postal code validation both in same field use below regular Expression



(^([0-9]{5})$)|(^[ABCEGHJKLMNPRSTVXYabceghjklmnprstvxy]{1}\d{1}[A-Za-z]{1} *\d{1}[A-Za-z]{1}\d{1}$)



In case you have not observed this, the regular expression for validating both Zip code and Postal code is a OR condition expression combining the two separate regular expressions for US Zip code and Canada Postal code with a pipe (|) separator.


3. The nine digit zip code for US

There are times when you may want to use the 9 digit zip code validation for US.
The 9 digit zip code is usually in format like this #####-####.

For a 9 digit US zip code validation use below regular Expression

^([0-9]{5}-[0-9]{4})$

1. Separate address forms for US/Canada
   


2. Single Address entry form for US and Canada


3. The nine digit zip code for US

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