Family size (for economic family)

Status: This standard was approved as a departmental standard on May 26, 2021.


Family size refers to the number of persons in the family.

Economic family refers to a group of two or more persons who live in the same dwelling and are related to each other by blood, marriage, common-law union, adoption or a foster relationship.

By definition, all persons who are members of a census family are also members of an economic family. Examples of the broader concept of economic family include the following: two co-resident census families who are related to one another are considered one economic family; co-resident siblings who are not members of a census family are considered as one economic family; and, nieces or nephews living with aunts or uncles are considered one economic family.

Conformity to relevant internationally recognized standards

There are no relevant internationally recognized standards.


  • 'Number of persons (two or more)' is expressed as a number ranging from two to the maximum number on the file. October 22, 2007 to current


Relation to previous version

  • Family size (for economic family) May 26, 2021 to current

    The definition of the statistical unit has been modified.

  • Family size of economic family November 16, 2015 to May 25, 2021

    This is an update to 'Size of economic family'. The concept has been renamed "Family size" and its definition has been simplified.

  • Size of economic family October 22, 2007 to November 15, 2015

    This standard was replaced by the 'Family size of economic family' as of November 16, 2015.

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