Australian Postcodes History
Postal codes used, managed and allocated by Australia Post are called Australian postcodes.
Postmaster-General's Department introduced Australian postcodes in 1967. Australian
postcodes are used for sorting and directing mail to customers. Australian
postcodes are also used by insurance companies to calculate insurance premiums,
the Ministry of Transport to give special numbers to each bus stop. The number
of a bus stop is composed of six digits, where the first four digits are the
postcode and plus additional two digits.
Australian Postcode History
Early postal sorting system in Australia was alphanumeric. Australian alphanumeric
codes were composed of two characters - a letter and a digit. There are
examples of early Australian postcodes: A6, E4, N2 and etc.
In 1967 the first mechanized mail processing center
appeared in Sydney and alphanumerical two character postcode system was replaced by four
digit numeric postcode system. A four digit number was assigned to every mail
delivery area in Australia. Australian postcodes were used on 75 per cent of mail by 1968. There
are examples of current Australian postcodes: 2600, 1465, 5501 and etc.