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Child type (CTPP)

Census of Population and Housing: Census dictionary
Reference period
2021

Definition

This variable identifies different parent-child relationships within families.

Scope

All children

Categories

CodeCategory

1

Natural, or adopted child of both parents or lone parent

2

Step child of male parent

3

Step child of female parent

4

Foster child, so stated

5

Otherwise related child (under 15)

6

Unrelated child (under 15)

@

Not applicable

V

Overseas visitor

Number of categories: 8

Not applicable (@) category comprises:

  • Husband, wife, partners, lone parents, other related individuals, non-family members, or visitors (from within Australia) in family households
  • Persons in non-family/non-classifiable households
  • Persons in non-private dwellings
  • Persons in migratory, off-shore and shipping SA1s

Question(s) from the Census form

What is the person’s relationship to Person 1/Person 2?

    What is the person’s relationship to Person 1/Person 2?
    What is Person 2's relationship to Person 1?

    Examples of other relationships: Son-in-law, Grand-daughter, Uncle, Boarder.

    More information

    Husband or wife of Person 1

    De facto partner of Person 1

    Child of Person 1

    Stepchild of Person 1

    Brother or sister of Person 1

    Unrelated flatmate or co-tenant of Person 1

    Other relationship to Person 1 (please specify)

      More information

      Additional information relating to the question on: What is Person 2's relationship to Person 1?

      More information

      What is Person 2's relationship to Person 1?

      Examples of other relationships: Son-in-law, Grand-daughter, Uncle, Boarder.

      More information

      If more than one response applies, select only the option that shows the relationship that most closely applies.

      For each person away, complete the following questions:

      The Census asks a number of questions for usual residents who were temporarily absent on Census night, these are known as persons temporarily absent (PTA) questions. The PTA questions below are used to derive this variable.

        List the people who were away on the night of Tuesday 10 August 2021 but usually live in this dwelling.
        List the people who were away on the night of Tuesday 10 August 2021 but usually live in this dwelling.

        Remember that people listed here will need to complete a Census form for where they were in Australia on Census night.

        People away

        List Person Away 1 - Any person who usually lives in this dwelling, but was away.

        Add another person away

          Example

          Child type example - Person 4 Surname

          Example

          List the people who were away on the night of Tuesday 10 August 2021 but usually live in this dwelling.

          Remember that people listed here will need to complete a Census form for where they were in Australia on Census night.

          People away

          Person 4 Surname - Any person who usually lives in this dwelling, but was away.

          Add another person away
            What is Person 4's date of birth?
            What is Person 4's date of birth?

            If date of birth is not known, please give age.

            More information

            Date of birth

            Day Month Year

            OR

            Age

              More information

              Additional information relating to the question on: What is Person 4's date of birth?

              More information

              What is Person 4's date of birth?

              If date of birth is not known, please give age.

              More information

              It is important to note:
              • Date of birth is the date that the person was born.
              • Age is required only if the person's date of birth is not known. Please report age at Census night – Tuesday 10 August 2021.

              If the person is less than one year old and their date of birth is not known, enter '0' in the age box.
                What is Person 4's relationship to Person 1/Person 2?
                What is Person 4's relationship to Person 1/Person 2?

                Examples of other relationships: Son-in-law, Grand-daughter, Uncle, Boarder.

                More information

                Husband or wife of Person 1

                De facto partner of Person 1

                Child of both Person 1 and Person 2

                Child of Person 1 only

                Child of Person 2 only

                Unrelated flatmate or co-tenant of Person 1

                Other relationship to Person 1 (please specify)

                  More information

                  Additional information relating to the question on: What is Person 4's relationship to Person 1/Person 2?

                  More information

                  What is Person 4's relationship to Person 1/Person 2?

                  Examples of other relationships: Son-in-law, Grand-daughter, Uncle, Boarder.

                  More information

                  If more than one response applies, select the option that shows the relationship that most closely applies.

                  How this variable is created

                  This variable is derived from the Relationship in household question on the Census form.

                  Children are classified as:

                  • A ‘child’ if the person is aged under 15 years of age
                  • 'Otherwise related child' when they live with another adult relative (e.g. older sibling, aunt, uncle) and no natural, adoptive, step-, foster-, or grand- parent is identified
                  • 'Unrelated child' when no relative is identified within the same dwelling.

                  Persons aged over 15 years and over are classified as:

                  • ‘Children’ if they are living with a natural, adoptive, step, foster or grandparent
                  • 'Not applicable’ if they are a boarder and/or lodger aged 15 years and over

                  In some cases, children are listed on the Census form as Person 2. In this case, if both parents are usual residents, the response 'Child of both Person 1 and Person 2' is not available in the relationship question for Person 2. Coders attempt to establish whether the child was a step child or child of both parents using other information such as surname.

                  History and changes

                  A question on the relationships between members of a household has been asked in all Censuses since 1911. This variable has been output since 1991.

                  No changes have been made for 2021.

                  Data use considerations

                  This variable captures complex family structures such as blended families or multiple generations of families within a household. The quality of family data in the Census is partly dependent on people’s ability to describe these relationships within the constraints of the generalised questionnaire format required by a Census.

                  The categories 'step child' and 'foster child' are not necessarily pure counts as a parent may report such a child as being a child of Person 1 and Person 2. In this case the child would be classified as a 'natural child'.

                  Cross classification of Child type (CTPP) with Family composition (FMCF) allows analysis of different family types.

                  Related variables and glossary terms

                  Other ABS sources