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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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How we maximised the quality of Census 2021 population estimates during the processing and quality assurance of the final statistics.
The methods the Office for National Statistics (ONS) will use to assess the benefits of Census 2021 data for users, including central and local government, private and voluntary sectors.
Methodology for coverage estimation of Census 2021 in England and Wales.
The model selection process and chosen models for coverage estimation of Census 2021 in England and Wales.
The methods for resolving item non-response and item inconsistencies in Census 2021 data, including deterministic editing, nearest neighbour donor imputation, and manual imputation.
Methodology for the validation of Census 2021 population estimates for England and Wales, including the assurance of processes, assessment of estimates, and involvement of local authorities.
Methodology for the validation of the Census 2021 population estimates for each local authority, as part of the wider quality assurance of the census data.
The administrative data sources that were used in the statistical design for Census 2021, with information on their coverage, accuracy, and timeliness.
Developments in producing mid-2021 population estimates rolled forward from Census 2021, by local authority district, age, and sex. Includes method changes needed to roll forward the three months from Census Day to mid-year and discusses our ongoing challenges.
Interactive tool to help local authorities compare age-sex estimates and comparator data from Census 2021 to other areas within England and Wales.
