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Citizenship shows how many people in an area are Australian citizens and how many are not. ABS publishes the citizen count. Place Forecast works out the not-citizen count by taking that away from the total.
The figures come from Census data. The Australian Bureau of Statistics collects them.
ABS does not publish a separate Not stated count for citizenship at small-area scale. People who left the question blank fall into the Not an Australian citizen figure here.
The two groups are:
Both inputs to the working-out are perturbed by ABS, so for very small areas the take-away can produce an odd figure. See perturbation.
The total counts people at their usual place of residence. It covers people in non-private homes such as hospitals, aged-care homes, hostels, and student housing. It does not count overseas visitors.
The total here is smaller than the area's ERP-based total. This is a raw Census count. The population pages use ABS Estimated Resident Population (ERP).
Place Forecast stores citizenship at the mesh block level. The ABS Census shows the citizen count at SA1. We split each SA1 across its mesh blocks by the share of ERP. Then we add the mesh blocks back up to the area you see. So the figures for very small areas are an estimate, not a direct ABS count.
The LGA figure for Australian citizen matches the ABS published cell. The not-an-Australian-citizen figure is the ABS published total minus the ABS published Australian citizen cell. See LGA anchoring for how this works.
Citizenship is a legal status. It is not a sign of how someone belongs or what they give. Many people who are not Australian citizens have lived here for years, work in key services, pay taxes, and raise their family in the area. Use this page to read the legal mix in your area. Do not use it as a proxy for community ties, English skill, time in the area, or who can get services that do not need citizenship.