The ABS will be closed from 12.00pm, 24 December 2025 and will reopen at 9.00am, 2 January 2026. During this time there will be no statistical releases and our support functions will be unavailable. The ABS wishes you a safe and happy Christmas.

Australian Citizenship Standard

Latest release

Australian Citizenship is the variable which describes whether people are Australian citizens

Reference period
2025, Version 1.3
Released
21/08/2025
Next release Unknown
Release date and time
21/08/2025 11:30am AEST

Introduction

This product presents statistical standards for the Australian Citizenship variable. This includes the concept(s), definition(s), question modules, classification, coding structure and output categories to be used in ABS interviewer-based and self-enumerated collections. 

Australian Citizenship is the variable that describes whether people are Australian citizens.

A question on nationality, and later citizenship, has been included in every Census of Population and Housing since 1911. For more information on variations on the data collected, please refer to the table below.

Census YearData collected
1911Nationality based on whether the person is a British subject by birth, decent or naturalisation. 
1921Nationality based on which nation the person is a subject of by means of birthplace, parentage or naturalisation
1933Nationality according to which country the person belongs
1947 to 1961Nationality according to which country a person owed legal allegiance and, where applicable, indicate if they are naturalized British citizens.
1966Nationality or citizenship according to which country a person owed legal allegiance and, where applicable, indicate if they are naturalized Australian or British citizens.
1971Only people born overseas asked to specify nationality or citizenship
1976Only people born overseas asked to specify country of citizenship
1981All respondents asked to state their country of citizenship
1986 onwardsWhether the person is an Australian citizen

Australian citizenship data for Statistical Area 1's (SA1s) or Greater Capital City Statistical Areas (GCCSAs) are only available from the Census. Citizenship data at these lower geographic levels is regarded as essential by organisations such as the Australian Electoral Commission, various state electoral commissions and the Department of Home Affairs (Home Affairs). 

Data on Australian citizenship: 

  • enables the analysis of migration patterns of Australian citizens over time,
  • gives an indication of what proportion of the population is on the electoral roll and enables electoral boundary redistribution, and
  • helps to assess the number of people who are not Australian citizens but who may be residentially eligible to apply for citizenship.

Underlying concepts

Name of variable

The standard name of the variable is Australian Citizenship.

Definition of variable

Nominal definition

The Australian Citizenship Act 2007 determines who holds Australian citizenship. Australian citizenship is a person's status in relation to Australia and carries with it certain responsibilities and privileges. A person may acquire Australian citizenship in a number of ways, for example, by birth, adoption, descent, resumption or grant of Australian citizenship (naturalisation).

Australian Citizenship is an attribute of the counting unit 'person'. That is, it is an attribute of an individual as opposed to a family or household.

Operational definition

The operational definition for Australian Citizenship is the same as the nominal definition. The accuracy with which it is measured depends on the respondent's understanding of the question. Proof of Australian citizenship could only be confirmed by sighting appropriate documentation. Asking people to provide documentation, however, is neither practical nor appropriate in self-enumerated and interview-based surveys.

Conceptual issues

The most important conceptual issue associated with Australian Citizenship is whether a respondent understands that citizenship represents a person's legal status in relation to Australia. The legal requirements determining citizenship are complex and liable to change over time.

Definition of Australian Citizen

Classification and coding

Classification criteria

The classification criterion is whether a person meets the requirements for Australian citizenship, as set out in the Australian Citizenship Act 2007, and is eligible to call themselves an Australian citizen. The categories of the classification are constructed by dividing the population into two groups - those who are Australian Citizens and those who are not Australian Citizens.

The standard classification

The standard classification for Australian Citizenship is a flat or single-level classification consisting of two categories, as follows:

  • Australian Citizen
  • Not an Australian Citizen
     

​​​​​​​The code structure

The code structure for the classification is:

  1. Australian Citizen
  2. Not an Australian Citizen
     

Supplementary codes

The following supplementary code is used to code inadequately described responses and non-responses:

  1. Not stated/Inadequately described

Coding indexes

See standard input categories under Collection methods.

Scope of the variable

The variable Australian Citizenship applies to all persons.

Application of the variable to other classifications

The Australian Citizenship classification is not applicable to any other variable.

Coding procedures

Responses to the Australian Citizenship question are self coded to the classification.

Collection methods

​​​​​​​Question module

The standard question module for determining Australian Citizenship follows:

Q1. [Are you] [is the person] [is (name)] an Australian citizen?

Yes - Australian Citizen
No

 


The standard question is recommended for all household based surveys, whether self-enumerated or interview based, and other statistical and administrative collections.

Standard input categories

The standard input categories for Australian Citizenship are the same as the standard classification and also includes the supplementary category, 'Not stated/Inadequately described':

  • Australian Citizen
  • Not an Australian Citizen
  • Not stated/Inadequately described

Output

The standard output categories for Australian Citizenship data are the same as the standard classification and may include the supplementary category, if applicable:

  • Australian Citizen
  • Not an Australian Citizen
  • Not stated/Inadequately described
     

It is recognised, however, that the output category names may be too long for some uses. Therefore, it is permissible to abbreviate the output category labels, where no confusion would arise, as follows:

  • Australian
  • Not Australian
  • Not stated

Measurement issues and related classifications

Measurement issues

See Operational definition in Underlying concepts.

Related classifications

There are no related classifications.

History of changes

21/08/2025  

This publication updates the previous publication Version 1.2 (2014). The text and the publication format has been streamlined for readability and discoverability. The standard was reviewed, and updates made, including to the historical background, changes to department names, terminology, and references that have changed since the last publication.   

Back to top of the page