Approximated social grade (5 categories)

Description: This socio-economic classification is used by the market research and marketing industries to analyse spending habits and consumer attitudes. It is not possible to assign social grade precisely from Census 2021, although the Market Research Society's method provides a good approximation.

Quality information: As Census 2021 was during a unique period of rapid change, take care when using this data for planning purposes. Read more about this https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/earningsandworkinghours/methodologies/labourmarketqualityinformationforcensus2021[quality notice].

Comparability with 2011: Broadly comparable. In 2021, an improved methodological approach was used to create this variable. However, as social grade was modelled using different algorithms and variables in 2011 and 2021, it would be misleading to use census outputs to examine trends over this period.

Ethnic group (25 categories)

Description: The ethnic group that the person completing the census feels they belong to. This could be based on their culture, family background, identity or physical appearance. Respondents could choose one out of 19 tick-box response categories, including write-in response options.

Comparability with 2011: Broadly comparable. The question about the ethnic group people feel they belong to is self-identified and is subjectively meaningful to the person answering the question. This means that how a person chooses to identify can change over time. We have included a new Roma category next to the Gypsy or Irish Traveller tick-box within the White category. We have also added a write-in option for those selecting African within the Black, Caribbean or Black British category. This means that a more specific ethnic background could be recorded.