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The report presents the findings, discusses how they should be interpreted and explores why the results differ from the Census.

This report presents the Annual Population Survey (APS) results on people’s ability to speak, read, write and understand spoken Welsh. It also presents the results for how often people speak Welsh. 

The Census of Population is the key source used to measure the number of Welsh speakers in Wales. A far greater number of people are recorded as speaking Welsh in the APS than in the Census and this has grown in recent years. This bulletin explores some of the reasons why the APS and Census results may differ.

This bulletin expands on a recent blog published by the Chief Statistician, which gave a brief discussion on the interpretation of the Welsh language data in the APS.

As the APS provides quarterly results, it is useful to use the APS to look at trends in the Welsh language between censuses.

Details about how the survey is developed and carried out can be found on the Office for National Statistics website.


Welsh language results: Annual Population Survey, 2001 to 2018 , file type: PDF, file size: 1 MB

1 MB
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Datasets and interactive tools


Lisa Walters

Telephone: 0300 025 6682

Rydym yn croesawu galwadau a gohebiaeth yn Gymraeg / We welcome calls and correspondence in Welsh.


Telephone: 0300 025 8099

Rydym yn croesawu galwadau yn Gymraeg / We welcome calls in Welsh.