Annual Population Survey - Frequency of speaking Welsh by local authority and year

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Standard shorthand is used in this table: [a] = average, [t] = total, [u] = low reliability, [x] = not available.

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Data description ( of 2 selected2 selectable options)

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Frequency of speaking Welsh ( of 4 selected4 selectable options)

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Local Authority ( of 23 selected23 selectable options)

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Year ( of 85 selected85 selectable options)

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Data valuesData descriptionFrequency of speaking WelshLocal AuthorityYear
13.8 [a]PercentageDailyWalesYear ending 30 Sep 2009
54.0PercentageDailyIsle of AngleseyYear ending 31 Dec 2018
16.3 [a]PercentageDailyWalesYear ending 30 Sep 2017
13.8 [a]PercentageDailyWalesYear ending 31 Dec 2009
50.9PercentageDailyIsle of AngleseyYear ending 31 Dec 2022
54.3PercentageDailyIsle of AngleseyYear ending 31 Mar 2019
15.2 [a]PercentageDailyWalesYear ending 30 Sep 2021
16.1 [a]PercentageDailyWalesYear ending 31 Dec 2017
15.0 [a]PercentageDailyWalesYear ending 31 Dec 2013
13.8 [a]PercentageDailyWalesYear ending 31 Mar 2010
48.1PercentageDailyIsle of AngleseyYear ending 31 Dec 2024
52.5PercentageDailyIsle of AngleseyYear ending 31 Mar 2023
51.5PercentageDailyIsle of AngleseyYear ending 31 Mar 2021
53.3PercentageDailyIsle of AngleseyYear ending 30 Jun 2019
15.0 [a]PercentageDailyWalesYear ending 30 Sep 2023
14.9 [a]PercentageDailyWalesYear ending 31 Dec 2021
16.0 [a]PercentageDailyWalesYear ending 31 Dec 2019
15.9 [a]PercentageDailyWalesYear ending 31 Mar 2018
15.4 [a]PercentageDailyWalesYear ending 31 Dec 2015
15.3 [a]PercentageDailyWalesYear ending 31 Mar 2014
14.5 [a]PercentageDailyWalesYear ending 31 Mar 2012
14.2 [a]PercentageDailyWalesYear ending 30 Jun 2010
13.5 [a]PercentageDailyWalesYear ending 31 Dec 2007
47.5PercentageDailyIsle of AngleseyYear ending 31 Mar 2025
46.1PercentageDailyIsle of AngleseyYear ending 31 Mar 2024
52.3PercentageDailyIsle of AngleseyYear ending 30 Jun 2023
49.9PercentageDailyIsle of AngleseyYear ending 31 Mar 2022
51.2PercentageDailyIsle of AngleseyYear ending 30 Jun 2021
51.8PercentageDailyIsle of AngleseyYear ending 30 Jun 2020
53.4PercentageDailyIsle of AngleseyYear ending 30 Sep 2019
13.9 [a]PercentageDailyWalesYear ending 30 Sep 2024
14.9 [a]PercentageDailyWalesYear ending 31 Dec 2023
15.0 [a]PercentageDailyWalesYear ending 31 Dec 2022
14.9 [a]PercentageDailyWalesYear ending 31 Mar 2022
16.3 [a]PercentageDailyWalesYear ending 31 Dec 2020
16.1 [a]PercentageDailyWalesYear ending 31 Mar 2020
16.7 [a]PercentageDailyWalesYear ending 31 Mar 2019
16.1 [a]PercentageDailyWalesYear ending 30 Jun 2018
16.2 [a]PercentageDailyWalesYear ending 31 Dec 2016
15.4 [a]PercentageDailyWalesYear ending 31 Mar 2016
15.8 [a]PercentageDailyWalesYear ending 31 Mar 2015
15.5 [a]PercentageDailyWalesYear ending 30 Jun 2014
14.4 [a]PercentageDailyWalesYear ending 31 Mar 2013
14.4 [a]PercentageDailyWalesYear ending 30 Jun 2012
14.5 [a]PercentageDailyWalesYear ending 30 Jun 2011
14.4 [a]PercentageDailyWalesYear ending 30 Sep 2010
13.8 [a]PercentageDailyWalesYear ending 31 Dec 2008
13.6 [a]PercentageDailyWalesYear ending 31 Mar 2008
13.7 [a]PercentageDailyWalesYear ending 30 Jun 2007
14.3 [a]PercentageDailyWalesYear ending 31 Mar 2007
48.1PercentageDailyIsle of AngleseyYear ending 30 Sep 2024
48.2PercentageDailyIsle of AngleseyYear ending 30 Jun 2024
47.4PercentageDailyIsle of AngleseyYear ending 31 Dec 2023
48.3PercentageDailyIsle of AngleseyYear ending 30 Sep 2023
50.5PercentageDailyIsle of AngleseyYear ending 30 Sep 2022
48.9PercentageDailyIsle of AngleseyYear ending 30 Jun 2022
50.1PercentageDailyIsle of AngleseyYear ending 31 Dec 2021
52.8PercentageDailyIsle of AngleseyYear ending 30 Sep 2021
51.6PercentageDailyIsle of AngleseyYear ending 31 Dec 2020
49.6PercentageDailyIsle of AngleseyYear ending 30 Sep 2020
52.4PercentageDailyIsle of AngleseyYear ending 31 Mar 2020
53.6PercentageDailyIsle of AngleseyYear ending 31 Dec 2019
13.8 [a]PercentageDailyWalesYear ending 31 Mar 2025
13.9 [a]PercentageDailyWalesYear ending 31 Dec 2024
14.1 [a]PercentageDailyWalesYear ending 30 Jun 2024
14.4 [a]PercentageDailyWalesYear ending 31 Mar 2024
14.9 [a]PercentageDailyWalesYear ending 30 Jun 2023
15.0 [a]PercentageDailyWalesYear ending 31 Mar 2023
15.2 [a]PercentageDailyWalesYear ending 30 Sep 2022
14.8 [a]PercentageDailyWalesYear ending 30 Jun 2022
15.4 [a]PercentageDailyWalesYear ending 30 Jun 2021
15.8 [a]PercentageDailyWalesYear ending 31 Mar 2021
16.2 [a]PercentageDailyWalesYear ending 30 Sep 2020
16.2 [a]PercentageDailyWalesYear ending 30 Jun 2020
16.2 [a]PercentageDailyWalesYear ending 30 Sep 2019
16.5 [a]PercentageDailyWalesYear ending 30 Jun 2019
16.6 [a]PercentageDailyWalesYear ending 31 Dec 2018
16.4 [a]PercentageDailyWalesYear ending 30 Sep 2018
16.3 [a]PercentageDailyWalesYear ending 30 Jun 2017
16.4 [a]PercentageDailyWalesYear ending 31 Mar 2017
15.9 [a]PercentageDailyWalesYear ending 30 Sep 2016
15.6 [a]PercentageDailyWalesYear ending 30 Jun 2016
15.5 [a]PercentageDailyWalesYear ending 30 Sep 2015
15.7 [a]PercentageDailyWalesYear ending 30 Jun 2015
15.4 [a]PercentageDailyWalesYear ending 31 Dec 2014
15.6 [a]PercentageDailyWalesYear ending 30 Sep 2014
14.8 [a]PercentageDailyWalesYear ending 30 Sep 2013
14.6 [a]PercentageDailyWalesYear ending 30 Jun 2013
14.4 [a]PercentageDailyWalesYear ending 31 Dec 2012
14.3 [a]PercentageDailyWalesYear ending 30 Sep 2012
14.6 [a]PercentageDailyWalesYear ending 31 Dec 2011
14.3 [a]PercentageDailyWalesYear ending 30 Sep 2011
14.5 [a]PercentageDailyWalesYear ending 31 Mar 2011
14.5 [a]PercentageDailyWalesYear ending 31 Dec 2010
13.8 [a]PercentageDailyWalesYear ending 30 Jun 2009
13.8 [a]PercentageDailyWalesYear ending 31 Mar 2009
13.6 [a]PercentageDailyWalesYear ending 30 Sep 2008
13.5 [a]PercentageDailyWalesYear ending 30 Jun 2008
13.7 [a]PercentageDailyWalesYear ending 30 Sep 2007
51.8PercentageDailyIsle of AngleseyYear ending 30 Sep 2018
Showing 1 to 100 of 13,432 rows
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Main information

Most recent update
25 September 2025
Next update expected
9 October 2025
Designation
Official statistics
Data provider
Office for National Statistics (ONS)
Data source
Annual Population Survey (APS)

Data notes

Revisions
  • 25 September 2025
  • 25 September 2025
Rounding applied

Figures are rounded to the nearest 100 and so there may be some apparent slight discrepancies between the sum of constituent items and the totals as shown.

Overview

Summary of dataset and variables

This dataset shows how often people aged 3 or older say they speak Welsh, by local authority and year ending date.

The information is broken down by:

  • Local authority – the area where people live.
  • Year ending – the period the estimate relates to (for example, year ending 31 March 2023).
  • Frequency category – how often people say they speak Welsh (e.g. daily, weekly, less often, never).
  • Measure – the estimated number or percentage of people in each frequency category.

You can use this dataset to compare how often Welsh is spoken in different parts of Wales and how this changes over time.

Data collection or calculation

The data come from the Annual Population Survey (APS), which is an annual dataset derived from the Labour Force Survey (LFS) carried out by the Office for National Statistics (ONS). Local authority level data have been available since 2001, when an enhanced sample (around 350% larger than the standard survey) was introduced.

Since 2004, the APS has been produced on a rolling annual basis, with each rolling annual average covering a 12-month period and updated every three months. This provides more timely data while overlapping periods by nine months. The rolling dataset is boosted with additional sampled respondents to improve the robustness of estimates, particularly for local-level geographies.

For the years 2001–2003, Welsh-specific weights are applied to better reflect population figures for local authorities.

In mid-March 2020, APS interviews switched from face-to-face to telephone because of the COVID-19 pandemic. The ONS monitored the impact and re-weighted the data accordingly. Face-to-face interviews were reintroduced in autumn 2023. Comparing pre-2020 face-to-face interviews with telephone interviews suggested a slight increase in respondents reporting Welsh-speaking ability, so caution is advised when interpreting trends across this period.

The survey collects information on the population’s ability to speak Welsh. Respondents aged 3 or older are asked whether they can speak Welsh, and estimates are presented as counts or percentages of Welsh speakers.

Standard analysis and weighting methods are applied to ensure the estimates are representative of the population.

Statistical quality

These estimates were previously classified as accredited official statistics. Due to a fall in sample sizes in the Annual Population Survey (APS) in recent years, and because the survey has not been reweighted to the latest population estimates, this accreditation has been temporarily suspended. The estimates are now designated as official statistics.

The statistics remain suitable for use, but users should note that there is increased uncertainty, particularly for smaller geographic areas or population sub-groups, where estimates are less reliable. Trends should be considered alongside other sources of information on Welsh speakers, such as the National Survey for Wales. The Welsh Government considers the census of population to be the key source of information to measure the number of Welsh speakers in Wales.

All APS data are sample-based, meaning results are estimates rather than exact counts. The true value of any measure lies within a range around the estimate, with variability increasing as data become more detailed. For example, local authority-level estimates are subject to greater uncertainty than national-level estimates.

APS responses are weighted to official population projections. Initially, 2020 data were based on 2018 population projections, which did not account for changes from the COVID-19 pandemic. In September 2021, APS data were reweighted using updated population estimates derived from HM Revenue and Customs Real Time Information (RTI), improving accuracy for overall rates and levels.

These changes reduce potential bias in higher-level aggregates, but some smaller breakdowns may still be affected due to reduced sample sizes during the pandemic, leading to more extreme variation in estimates.

Related reports

Published by

Organisation
Welsh Government
Contact email
welshlanguagedata@gov.wales

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Metadata

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