data.gov.au

Data.gov.au is the central source of Australian open government data published by federal, state and local government agencies.

This data is a national resource that holds considerable value for growing the economy, improving service delivery and transforming policy outcomes.
In addition to government data, you can also find publicly-funded research data and datasets from private institutions that are in the public interest.
The site has over 30,000 publically available datasets and continues to grow.
In addition to free, open datasets, data.gov.au now includes information about unpublished data and data available for purchase.