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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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Information on the data, methods and assumption setting process used to produce the 2022-based national population projections.
Methodology for national population estimates broken down into small geographical areas – Super Output Areas, health geographies, electoral wards, Parliamentary constituencies and National Parks.
Outline of our work plan to address the recommendations of the Office for Statistics Regulation.
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.
A comparison of the different types of population estimate that are published on the ONS website or are planned for future publication.
A technical article setting out the statistical design of developing population and migration statistics using administrative sources.
National and subnational mid-year population estimates for England and Wales, broken down by administrative area, age, sex and components of population change.
This report provides information about the quality strategy underpinning the future population and migration statistics system in England and Wales.
This methodology brings together important information about our mid-year admin-based population estimates (ABPEs) for England and Wales.
Quality and methodology information for population estimates by marital status and living arrangements, detailing the strengths and limitations of the data, methods used, and data uses and users.
