As outlined in our blog post Revolutionising administrative data: a look into the future of population and migration statistics, we have published a range of estimates and analysis on the size and structure of the usual resident population of England and Wales in 2021; these estimates include our official population estimates and those produced as part of our research towards transforming our population and migration statistics system.  

You can also find updates on how we are transforming international migration statistics. 

Releases  

25 May 2023 – Population and migration estimates - exploring alternative definitions 

3 March 2023 – Administrative sources used to develop the Statistical Population Dataset for England and Wales: 2016 to 2021 

1 March 2023 – Understanding quality of linked administrative data sources in England and Wales, using the 2021 Census – Demographic Index linkage

28 February 2023 – Transforming population statistics, comparing 2021 population estimates in England and Wales 

28 February 2023 – Admin-based population estimates: provisional estimates for local authorities in England and Wales, 2011 to 2022  

28 February 2023 – Dynamic population model for local authority case studies in England and Wales: 2011 to 2022 

28 February 2023 – Reconciliation of mid-year population estimates with Census 2021, England and Wales 

28 February 2023 – Developing Statistical Population Dataset , England and Wales, 2021 

28 February 2023 – Understanding quality of the Statistical Population Dataset in England and Wales using the 2021 Census – Demographic Index linkage 

23 November 2022 – Dynamic population model for local authority case studies in England and Wales: 2011 to 2022 

14 July 2022 - International migration statistical design progress report: July 2022

14 July 2022 – Dynamic population model for England and Wales: July 2022 

26 November 2021 – Admin-based population and migration estimates: research update 

26 November 2021 – Developing admin-based population estimates, England and Wales: 2016 to 2020 

26 November 2021 – Understanding students across administrative data in England and Wales 

26 November 2021 — International migration statistical design: progress report 

16 April 2021 – International migration: developing our approach for producing admin-based migration estimates 

27 July 2020 – Developing our approach for producing admin-based population estimates, subnational analysis for England and Wales: 2011 

27 July 2020 – Measuring and adjusting for coverage patterns in the admin-based population estimates 

27 July 2020 – Admin-based population estimates and statistical uncertainty: July 2020 

21 June 2019 – Developing our approach for producing admin-based population estimates, England and Wales: 2011 and 2016  

8 March 2018 – Research Outputs: Estimating internal migration in England and Wales, year ending June 2016 

20 November 2017 – Research Outputs: Estimating the size of the population in England and Wales, 2017 release  

17 November 2016 – Research Outputs: Estimating the size of the population in England and Wales: 2016 release  

22 October 2015 – Research Outputs: estimating the size of the population in England and Wales: 2015 release 

You can also read our progress updates and get involved.