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About this dataset

This dataset provides Census 2021 estimates that classify usually resident dependent children aged 3 years and over in families in Wales by family type, by the parents' ability to speak Welsh, by age, and by the ability to speak Welsh. The estimates are as at Census Day, 21 March 2021.

Protecting personal data

Sometimes we need to make changes to data if it is possible to identify individuals. This is known as statistical disclosure control. In Census 2021, we:

  • Swapped records (targeted record swapping), for example, if a household was likely to be identified in datasets because it has unusual characteristics, we swapped the record with a similar one from a nearby small area. Very unusual households could be swapped with one in a nearby local authority.
  • Added small changes to some counts (cell key perturbation), for example, we might change a count of four to a three or a five. This might make small differences between tables depending on how the data are broken down when we applied perturbation.

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About the variables

Dependent child age (4 categories)

Description: Counts dependent children and gives an age classification.

Comparability with 2011: Highly comparable


Family type and Welsh-speaking adults (12 categories)

Description: Classifies the type of family (married or civil partnership, cohabiting or lone parent) and categorises them by whether any adults in that family can speak Welsh. This classification only includes families in Wales.

Comparability with 2011: Highly comparable


Welsh speaking ability (3 categories)

Description: This classifies a person as being able to "Speak Welsh". They may have also ticked one or more of the following: * understand spoken Welsh * read Welsh * write Welsh

In results that classify people by Welsh language skills, a person may appear in more than one category depending on which combination of skills they have.

Comparability with 2011: Highly comparable


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