National population projections: 2021-based interim

Released: 30 January 2024 9:30am
Next release: October to November 2024


National population projections (NPPs) provide an indication of the potential future population size of the UK. A headline only interim release using the latest available population data including Census 2021 (with a planned 2021 base-year) and new international migration assumptions using the latest estimates of international migration. Assumptions for cross border migration, fertility and mortality are reused from 2020-based interim NPPs. NPPs are widely used in planning, for example, fiscal projections, health, education, and pensions.



Contact details


James Robards



+44 1329 444661

About the data

Accredited Official Statistics

These are accredited official statistics. They have been independently reviewed by the Office for Statistics Regulation (OSR) and found to comply with the standards of trustworthiness, quality and value in the Code of Practice for Statistics. This broadly means that the statistics:

  • meet user needs
  • are presented clearly and accessibly
  • are produced using appropriate data and sound methods
  • are managed impartially and objectively in the public interest