See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Australian Bureau of Statistics. (Year). Title. https://xxxxxx
Australian Bureau of Statistics. (2007). Basic community profile: Brisbane (Statistical Division). http://www.ausstats.abs.gov.au/ausstats/2006Census5.nsf/LookupAttach/3052006+Census+Basic+Community+Profile+and+Snapshot29.02.081/$File/20010-BCP-Brisbane-Qld%20(Statistical%20Division).zip
Year is the publication year or the most recent revision.
If a catalogue number is given, include it after the title, in parentheses, e.g. (1304.2).
ABS uses long URLs on its website. You may use a shortened URL as long as you verify that it takes you to the correct location.