A '''postal code''' (known in various countries as a '''post code''', '''postcode''', or [[ZIP code]]) is a series of letters and/or numerical digits appended to a postal address for the purpose of sorting mail. | A '''postal code''' (known in various countries as a '''post code''', '''postcode''', or [[ZIP code]]) is a series of letters and/or numerical digits appended to a postal address for the purpose of sorting mail. |