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We moved them to The National Archives website, to keep this website as responsive as possible.
Please note: all historical data is still on this website.
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The data sources and methodology used to produce mortality assumptions in the 2024-based national population projections.
The data sources and methodology used to produce migration assumptions in the 2024-based national population projections.
A research evaluation comparing the accuracy of the admin-based population estimates (ABPEs) and mid-year population estimates (MYEs) for England and Wales.
Quality and methodology information for the Annual Population Survey. Includes strengths and limitations, methods, and data uses and users.
Quality and methodology information for national population estimates broken down into small geographical areas (Super Output Areas, health geographies, electoral wards, Parliamentary constituencies and National Parks) in England and Wales. Details the strengths and limitations of the data, methods used, and data uses and users.
Quality and methodology information for mid-year population estimates in the UK, detailing the strengths and limitations of the data, methods used, and data uses and users.
National and subnational mid-year population estimates for England and Wales, broken down by administrative area, age, sex and components of population change.
How we produced the statistics, their strengths and limitations and further quality information.
This methodology brings together important information about our mid-year admin-based population estimates for England and Wales.
Quality and methodology information for subnational population projections, detailing the strengths and limitations of the data, methods used and data uses and users.
