Australian Zip Codes: A Unique System

what do australian zip codes look like

Australia's postal code system was introduced in 1967 by the Postmaster-General's Department (PMG) to replace earlier postal sorting systems. Australian postcodes consist of four digits and are written after the name of the city, suburb, or town, and the state or territory. For example, the postcode for Sydney, the capital of New South Wales, is 2000. Postcodes are linked to a specific geographic region and can cover multiple suburbs. Some towns and suburbs have two postcodes, one for street deliveries and another for post office boxes.

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Australian postcodes are four digits long

Australian postcodes consist of four digits and are placed at the end of the address, after the city, suburb, or town, and the state or territory. For example, an address in Australia would be formatted as follows:

Recipient Name

100 Citizen Road

BLACKTOWN NSW 2148

Here, "BLACKTOWN" is the suburb, "NSW" indicates the state of New South Wales, and "2148" is the postcode. When writing an address by hand, envelopes often have four boxes printed in orange at the bottom right where the postcode can be written. This format assists with automated sorting for mail addressed by hand for Australian delivery.

Each postcode in Australia is linked to a specific geographic region, and they are often associated with multiple areas or suburbs. For instance, the postcode 2560 corresponds to several suburbs, including Ambarvale, St Helens Park, Gilead, and Englorie Park. Postcodes may also be assigned to individual buildings or institutions that receive a high volume of mail. For example, the Australian National University has the postcode 0200.

The first one or two numerals of a postcode typically indicate the state or territory. For instance, New South Wales has postcodes ranging from 1000 to 1999, 2000-2599, 2619-2898, and 2921-2999. Additionally, each state's capital city ends with three zeros, while territorial capital cities end with two zeros. For example, Sydney, the capital of New South Wales, has the postcode 2000.

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They are written after the city, suburb, or town

Australian postcodes consist of four digits and are written after the name of the city, suburb, or town, and the state or territory. For example, an address in Australia would be formatted like this:

Recipient Name

100 Citizen Road

BLACKTOWN NSW 2148

When writing an address by hand, if a row of four boxes is pre-printed on the lower right-hand corner of an envelope, the postcode may be written in these boxes instead. When posting to an organisation, business names can be written instead of a recipient name. If an article is intended for a specific identity within an organisation, their identity can be prepended on the line above the business name, with c/- prepended to the business name.

Postcodes were introduced in Australia in 1967 by the Postmaster-General's Department (PMG) to replace earlier postal sorting systems. The introduction of postcodes coincided with the introduction of a large-scale mechanical mail sorting system in Australia, starting with the Sydney GPO. The first digit of each postcode was copied directly from the previously existing numerical prefixes of Australian radio call signs, which were based on state/territory borders. Over time, the initial digits of postcodes have deviated from the radio system. For example, the 8000 series refers to special addresses in Victoria.

Some towns and suburbs have two postcodes—one for street deliveries and another for post office boxes. For example, a street address in the Sydney suburb of Parramatta would have a different postcode than a post office box in the same suburb. Additionally, large businesses, government departments, and other institutions receiving high volumes of mail may have their own postcode as a Large Volume Receiver (LVR). For instance, the Royal Brisbane and Women's Hospital has the postcode 4029.

It is worth noting that some places in Australia do not have postcodes, typically remote areas with little or no population.

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Postcodes are linked to a specific geographic region

Postcodes in Australia are four-digit numerical codes that are linked to a specific geographic region. They were introduced in 1967 by the Postmaster-General's Department to replace earlier postal sorting systems and are now managed by Australia Post. The first one or two numerals of a postcode usually indicate the state or territory, with each state's capital city ending in three zeros and territorial capital cities ending in two zeros. For example, Sydney, the capital of New South Wales, has the postcode 2000, while Melbourne's CAP ranges from 3000 to 3051.

However, postcodes can cover a large or small population, and some towns and suburbs share a postcode. For instance, postcode 2560 corresponds to multiple suburbs, including Ambarvale, St Helens Park, and Rosemeadow. Postcode 1560 covers an area of 60 x 20 km, encompassing a major town, three small towns, and several rural villages and localities.

Some large businesses, government departments, and institutions that receive a high volume of mail have their own postcode, known as a Large Volume Receiver (LVR). For example, the Royal Brisbane and Women's Hospital has the postcode 4029, and the Australian National University has the postcode 0200.

Australia Post has been progressively discontinuing the LVR program since 2006, and some remote areas with little to no population do not have postcodes. Additionally, Australia's external territories are included in the postcode system, with the three scientific bases in Antarctica sharing a postcode with Macquarie Island, part of Tasmania.

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Some towns have two postcodes

Australian postcodes consist of four digits and are placed at the end of an address, before the country name. They were introduced in 1967 to replace earlier postal sorting systems and coincide with the introduction of a large-scale mechanical mail sorting system.

Some towns and suburbs have two postcodes—one for street deliveries and another for post office boxes. For example, a street address in the Sydney suburb of Parramatta would have one postcode, whereas a post office box in Parramatta would have a different postcode.

Many large businesses, government departments, and other institutions receiving high volumes of mail had their own postcode as a Large Volume Receiver (LVR). For instance, the Royal Brisbane and Women's Hospital has the postcode 4029, while the Australian National University has 0200. However, Australia Post has been progressively discontinuing the LVR program since 2006.

Some towns may also share a postcode. For example, the Jervis Bay Territory shares a postcode with the towns of Vincentia and Huskisson. Additionally, inner-city postcodes can cover multiple suburbs. For example, the 2000 postcode includes Sydney CBD and its surrounding suburbs.

In rural areas, a single town name may cover a large area, including multiple towns and localities. For example, the 2324 postcode covers a 60 x 20 km area, encompassing a major town, three small towns, and several rural villages and localities.

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The first two digits indicate the state or territory

Australian postcodes were introduced in 1967 by the Postmaster-General's Department (PMG) to replace earlier postal sorting systems. Postcodes are written after the name of the city, suburb, or town, and the state or territory. For example, a street address in the Sydney suburb of Parramatta would be written like this:

Recipient Name

100 Citizen Road

BLACKTOWN NSW 2148

The first one or two numerals usually indicate the state or territory that the postcode belongs to. For instance, New South Wales has postcodes between 1000 and 1999, 2000-2599, 2619-2898, and 2921-2999. The Australian Capital Territory has postcodes between 0200 and 0299, 2600-2618, and 2900-2920. The postcodes for the capital cities of states end with three zeros, while the territorial capital cities end with two zeros. For example, the postcode for Sydney, the capital of New South Wales, is 2000.

Some towns and suburbs have two postcodes—one for street deliveries and another for post office boxes. Additionally, some places in Australia do not have postcodes, typically remote areas with little or no population.

Frequently asked questions

Australian zip codes, also known as postal codes, consist of four digits. They are written at the end of the address, after the city, suburb, or town, and the state or territory. For example, an address in Blacktown, New South Wales would be written as follows:

Recipient Name

100 Citizen Road

BLACKTOWN NSW 2148

The first two digits of the zip code indicate the state or region. For example, New South Wales has zip codes ranging from 1000 to 1999, 2000-2599, and 2619-2898. The last three digits further specify the location within the state or region.

Yes, there are a few special cases for zip codes in Australia. Each state's capital city ends with three zeros, while territorial capital cities end with two zeros. For example, Sydney, the capital of New South Wales, has the zip code 2000. Additionally, some towns and suburbs may have two zip codes, one for street deliveries and another for post office boxes.

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