Singapore Post 4-State Postal Code

Singapore Post Mail 4-State Postal Code (also known as Singapore 4-State Postal, SingPost 4-State, SingPost Barcode, and Singapore 4-State Code) is used by Singapore Post for postal code and automatic mail sorting. It is identical to the Royal Mail 4-State Customer Barcode (CBC) that was developed by Royal Mail in the United Kingdom.

CBC is defined in the Royal Mail Mailsort User Guide: Mailsort 700 document.

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