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Regex for U.S. and Canadian Zip Codes

Below is the regex code for U.S. and Canadian zip codes. I’m don’t remember where I found these but hopefully someone finds them useful.

string _usZipRegEx = @"^\d{5}(?:[-\s]\d{4})?$";
string _caZipRegEx = @"^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])\ {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$";
Published inC#

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