Constituency data: Population, by age

This dashboard has the latest statistics on the total population for constituencies in the UK, with a breakdown by age.

You can view figures for specific age groups or find data for a custom age range. The latest population estimates are for mid-2024 for England and Wales, mid-2023 for Northern Ireland, and mid-2022 for Scotland. They are based on data from the 2021 census, combined with estimates of births, deaths, and migration. They should be treated as approximations rather than precise figures.

Explore constituency data

• Find which constituency you live in

Use the dropdown menu below to select the constituency you’re interested in and view key statistics.

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If you would like to access this information in an alternative format please email papers@parliament.uk and we will review your request.

Notes and sources

This data shows the estimated population at mid-year (30 June) in 2022, 2023 or 2024. These figures are estimates, based on 2021 or 2022 census results combined with assumptions about births, deaths and migration.

Data is published for single years of age up to age 90. The category “90” in this data represents everyone aged 90 and over.

England and Wales

Office for National Statistics, data accessed via Nomis, Nomis - Query Tool - Population estimates - small area (2021 based) by single year of age - England and Wales

Northern Ireland

Northern Ireland Statistics and Research Agency (NISRA), 2024 Mid-year population estimates for small geographical areas within Northern Ireland, All areas - population by sex and single year of age

Scotland

National Records of Scotland, Small area population estimates, Other geographies: Mid-2022 to mid-2024 population estimates (2011 Data Zones based)

Constituency figures are approximated from small areas called Data Zones which were defined at the 2011 census. In future, estimates based on 2022 Data Zones will be published.

Data updates

This dashboard will be updated as soon as possible in line with updates from the Office for National Statistics, NISRA, and National Records of Scotland.

MPs and their staff can contact the Commons Library with queries about updates.