The address provided on the front of the Census form helps Census staff ensure that no dwellings are omitted from the Census count.
The question asking the usual address of each person on Census Night (Question 8) is used to establish the Collection District (CD) of people who usually reside in a different area to where they were enumerated on Census Night.
Each person's usual address of one year and five years before the Census date is coded to SLA, from which information for most other ASGC codes can be derived (including state). These data provide information on the movement of people within Australia, i.e. internal migration.
Some addresses are also used to verify the results of the Post Enumeration Survey (PES).
For the 2006 Census, people again have the opportunity to agree to their name-identified information (which includes address) being retained. If a person chooses not to have their name-identified Census information retained, their name and address will be destroyed once the statistical processing has been completed. This will also happen if the question is left blank. Name and address information is only retained if a person explicitly agrees to it. All actual Census forms are destroyed once statistical processing has been completed.
See also Confidentiality, Internal migration, Place of Work (POWP), Postal Area (POA), Post Enumeration Survey (PES), Retention of name-identified information.