Postcode guides for Australia
How postcodes are structured, what the parts mean, and how to find the right one. Or skip the reading and detect your postcode now.
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Australian Postcodes Explained: What the Four Digits Mean
An Australian postcode is four digits and nothing else, and the first digit is not random: it came from radio call signs in 1967. Here is what each part narrows down, which codes are not places at all, and where the state rule quietly fails.
GetMyPostalCode Editorial ·
Why 0800 Becomes 800: Leading Zeros in Australian Postcodes
Northern Territory postcodes begin with zero, and that zero disappears the moment a postcode is treated as a number. Here is where it happens, what the damage looks like, and the one rule that prevents all of it.
GetMyPostalCode Editorial ·
Suburb, State and Postcode: Why an Australian Address Needs All Three
Australian addresses end with three things on one line, in capitals: SYDNEY NSW 2000. None of the three identifies a place on its own, which is why forms that guess one from another get it wrong often enough to matter.
GetMyPostalCode Editorial ·
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