Usual resident population in Wales by detailed country of passports held and area
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WalesMetadata
- Statistical quality information
- High level information
- Weblinks
- Keywords
- Summary information
- Open Data
Statistical quality
Further information on the statistical disclosure controls (including perturbation) that have been applied to the data can be found here:https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/methodologies/qualityandmethodologyinformationqmiforcensus2021#methods-used-to-produce-the-data
Title
Usual resident population in Wales by country of passports held and areaLast update
November 2023Publishing organisation
Welsh GovernmentSource 1
2021 Census, Office for National statisticsContact email
stats.popcensus@gov.walesDesignation
National StatisticsGeographical coverage
Local authoritiesLanguages covered
English and WelshData licensing
You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see http://www.nationalarchives.gov.uk/doc/open-government-licenceWeblinks
https://www.gov.wales/demography-and-migration-wales-census-2021https://www.ons.gov.uk/releases/demographyandmigrationcensus2021inenglandandwales
https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/methodologies/qualityandmethodologyinformationqmiforcensus2021#methods-used-to-produce-the-data
Keywords
2021 Census; Passports held; Country; PopulationGeneral description
On 2 November 2022, the Office for National Statistics (ONS) published 'Demography and migration: Census 2021 in England and Wales', which helped form the Welsh Government's publication 'Demography and migration in Wales (Census 2021)'. This was an update to initial population and household estimates, and included an overview of the non-UK born population as well as characteristics of households and residents in Wales.This table is based on Census table TS013, 'Passports held (detailed)', which provides Census 2021 estimates that classify usual residents in Wales and England by passports held.
For Census 2021, the ONS made changes to the data (called statistical disclosure control) so that it is not possible to identify individuals. These changes included:
• Swapped records (targeted record swapping), for example, if a household was likely to be identified in datasets because it has unusual characteristics, they swapped the record with a similar one from a nearby small area. Very unusual households could be swapped with one in a nearby local authority.
• Added small changes to some counts (cell key perturbation), for example, change a count of four to a three or a five. This might make small differences between tables depending on how the data are broken down when perturbation is applied.
This causes small changes to cells but does not fundamentally impact the meaning of the data. Where tables are made in different ways, the changes applied will be different, leading to differences between totals and tables not ‘adding-up’ to their totals. To minimise this, the ONS recommends where possible using totals from tables with fewer cells, at higher geographies. For example, if you wanted population by age you should use data from TS007 and if you wanted population by sex you should use data from TS008.
More information about the processes used in statistical disclosure control will be provided in future publications.
A usual resident of Wales is anyone who was living or staying in Wales for 12 months or longer on Census Day, 21 March 2021, or who had a permanent address in Wales and was staying outside Wales for less than 12 months.
