Regular Expression that splits the last line in an address into it's funtional parts.

gistfile1.txt

//http://wiki.cdyne.com/index.php/City_State_Zip_Regex

^(?<city>[A-Za-z\s]*)(?:,\s?(?<state>[\sA-Za-z]+)|\s(?<state>[A-Za-z]{2}))
(?:
(?:\d{1,4})|
(?<zip>\d{5})(?:-\d{0,3})|
(?<zip>\s\d{5})-(?<zip4>\d{4})|
(?<zip>\s\d{5})|
(?<pc>\s[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]\d[A-Za-z]\s?\d[A-Za-z]\d)|
)$

///This regular expression will return the following elements of an address:

    //* City
   // * State/Province (called State in the return)
   // * Zip
   // * Zip4 - The Zip4 part of the zipcode.
   // * PC - This is the Postal Code for Canadian Addresses.