Child in a family nucleus
To be a ‘child in a family nucleus’ a person must usually reside with at least one parent and have no partner or child(ren) of their own living in the same household.
Note that ‘child in a family nucleus’ can apply to a person of any age. There are four subgroups: ‘dependent child under 18’, ‘dependent young person’ (aged 18–24 years), ‘non-dependent child’, and ‘child of unknown dependency status’.
See also ‘Dependent child under 18’, ‘Dependent young person’, ‘Non-dependent child’, and ‘Parent’ in this definitions group.