As Australia prepares for the national Census of Population and Housing on Tuesday, 11 August 2026, many residents are asking a fundamental question: what actually happens to the personal information they hand over to the Australian Bureau of Statistics? The short answer, according to the ABS itself, is that your data is protected by law — and sharing it with police, immigration authorities or any other government agency is strictly prohibited.
What Information the Census Collects — and Why
On Census night, every person in Australia will be asked to provide personal details including their name and address, alongside a broader range of demographic information. The ABS says collecting names and addresses has been standard practice since the first national Census in 1911, and that doing so improves the accuracy and efficiency of data linkage as well as the overall quality of national statistics.
Addresses are also used for logistical purposes connected to the running of the Census itself. However, the agency is clear that these identifiers serve a functional role in processing — not a surveillance one.
For a closer look at what Census field officers are actually empowered to ask of you, see our earlier report on what Census field officers can legally require from residents.
How Your 2026 Census Data Is Protected
Jenny Telford, general manager of the Census and Population division at the ABS, described keeping people's data safe as "absolutely critical". She explained that names and addresses are separated from the rest of a person's answers early in the processing stage, and that the ABS is committed to destroying those identifiers once statistics have been compiled.
"The ABS has lots of protections, including legal protections, that mean we can never release information in any way that can identify an individual or a household," Telford said.
All ABS staff — including casual and temporary workers, both current and former — are legally bound never to disclose information gathered during the Census. Breaching that obligation carries serious consequences: fines of up to $26,400 and up to two years' imprisonment. The legal foundation for these protections is the Census and Statistics Act 1905.
Crucially, once the processing period is complete, no one working with Census data is able to view personal identifiers at the same time as survey results — meaning names and answers are never linked after that point.
How Long Does the ABS Keep Your Name and Address?
The ABS retains names for up to 18 months after Census night — until the end of February 2028. Addresses are kept for a maximum of 36 months, through to the end of August 2029. After those periods, the information is destroyed.
There is one exception: the Census Time Capsule. Australians can voluntarily choose to have their personal Census information preserved for 99 years, with the data securely transferred to the National Archives of Australia. Under this arrangement, no one can access the information for any reason until 2125. The ABS warns that opting into the Time Capsule is an irreversible decision — once submitted, it cannot be undone.
What the ABS Cannot Do With Your Data
Despite being a government agency itself, the ABS cannot share Census data with any other arm of government. That means your information cannot be passed to:
- Police or law enforcement agencies
- Registered migration agents
- Any other government department or body
This applies to names and addresses under all circumstances — there are no exceptions built into the law.
With Australia's population spread across fast-growing communities — including some of the fastest-growing suburbs in Perth — an accurate and trusted Census is increasingly important for planning infrastructure, services and housing. The ABS says the legal and structural safeguards around Census data are designed precisely to encourage full and honest participation from all Australians.
