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Postal codes in Cygnia, colloquially known as postcodes, are five to seven-character strings that form part of a postal address. Cygnian postcodes are alphanumeric, and are in the format A(A)1(1) 111, where A is a letter and 1 is a digit, with a space separating the last three digits from the other characters. There are over 800,000 postcodes currently in service across Cygnia using postal districts ranging from SW1 in Northam, TS to E11 in New Caledonia.

When writing out the postal address for a location within Cygnia, the postcode follows the abbreviation of the state or territory.

Components of a postcode

Postal districts

A postal district is a geographic area in which all postcodes start with the same three or four characters. The first letter(s) of a postal district code denotes a particular "postal region". Most states are divided into several regions (some smaller states are served by a unified "at-large" postal region). The regions were originally created by the Imperial Postal Service to serve a roughly equal number of people, although population growth and demographic change means this is in some areas no longer the case. After the letters, the final number denotes the district itself, which is a division of a postal region.

List under construction

State code Postal region Abbr. Areas served
AO Aotearoa A Aotearoa at-large
AU Esperance E Auralia at-large excluding Kalgoorlie-Boulder region
Kalgoorlie-Boulder K Kalgoorlie-Boulder region
AV North Charlotte-Greater Avon A Avon at-large including Charlotte LGAs of Campbelltown, Gawler, Norwood Payneham & St Peters, Playford, Port Adelaide-Enfield, Salisbury and Tea Tree Gully
South Charlotte C Charlotte excluding LGAs of Campbelltown, Gawler, Norwood Payneham & St Peters, Playford, Port Adelaide-Enfield, Salisbury and Tea Tree Gully
CA Corrigin-Narrogin C LGAs of Brookton, Bruce Rock, Corrigin, Cuballing, Cunderdin, Kellerberrin, Narrogin, Pingelly, Quairading, Tammin, Wandering and Williams
Northam-York-Beverley N LGAs of Northam, (not to be confused with Northam, TS) York and Beverley
Perth P Greater Perth and Territory of Swan[1]

Notes

  1. As the Territory of Swan does not have a large enough population for its own independent postal region, its entire area is served by the Perth postal region.
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