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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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Quality and Methodology Information for mid-year admin-based population estimates (ABPEs) for England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and Methodology Information report for annual mid-year population estimates for the very old, including centenarians, detailing the strengths and limitations of the data, methods used, 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.
Our planned publication schedule, approach to revisions and the availability of data in our admin-based population and migration statistical system.
Methodology on the comparison of national population projections from 1971 to 2022 with population estimates, births, long-term international migration, and deaths, including measures of error.
Quality and methodology information for national population projections, detailing the strengths and limitations of the data, methods used and data uses and users.
The data sources and methodology used to produce migration assumptions in the 2022-based national population projections.
The data sources and methodology used to produce mortality assumptions in the UK 2022-based national population projections.
The data sources and methodology used to produce fertility assumptions in the 2022-based national population projections.
The variant projections, a range of scenarios with alternative demographic assumptions, used in the 2022-based national population projections.
