Area type

Census 2021 statistics are published for a number of different geographies. These can be large, for example the whole of England, or small, for example an output area (OA), the lowest level of geography for which statistics are produced.

For higher levels of geography, more detailed statistics can be produced. When a lower level of geography is used, such as output areas (which have a minimum of 100 persons), the statistics produced have less detail. This is to protect the confidentiality of people and ensure that individuals or their characteristics cannot be identified.

2023 Lower tier local authorities

Lower tier local authorities provide a range of local services. In 2023 there were 296 lower tier local authorities in England made up of 164 non-metropolitan districts, 63 unitary authorities, 36 metropolitan districts and 33 London boroughs (including City of London). In Wales there were 22 local authorities made up of 22 unitary authorities.

Coverage

Census 2021 statistics are published for the whole of England and Wales. However, you can choose to filter areas by:

• country - for example, Wales
• region - for example, London
• local authority - for example, Cornwall
• health area – for example, Clinical Commissioning Group
• statistical area - for example, MSOA or LSOA

Country of birth (extended)

The country in which a person was born.

For people not born in one of the four countries of the UK or the Republic of Ireland, there was an option to select "elsewhere".

People who selected "elsewhere" were asked to write in the current name for their country of birth.

This classification provides additional detail on write-in responses.