Alternative population bases are different geographical locations where individuals could have been counted for Census 2021, other than their usual residence. We have published data on five types of alternative populations.
The short-term resident population are those who were not born in the UK and who intend to stay in the UK for less than 12 months.
The workplace population is an estimate of the usually resident population aged 16 years and over, working in an area. It includes people who work mainly at or from home, or do not have a fixed place of work, in their area of usual residence.
The workday population is an estimate of the population during the working day. It includes everybody who works in an area, wherever they usually live, and all respondents who live in the area but do not work.
The out-of-term population is the usually resident population, redistributed to their out-of-term address if they have one. As a result, the difference relates to the location of some students and schoolchildren.
The second address population looks at the characteristics of the population with a second address, including the characteristics of the second address itself. When producing datasets on the characteristics of the population with a second address, we count them at the location of their second address rather than at the address where they are usually resident.
Small populations are groups that are defined by their cultural background, including characteristics such as:
country of birth
Because of the small size of the total population in the groups, confidentiality constraints limit the release of more detailed standard statistics.
Instead, we will create bespoke datasets for specific small populations, at all geographies where the number of that population exceeds a set threshold.
Small population 2021 datasets – part 1
We have produced small population datasets for a total of 36 ethnic group, religion, or country of birth populations by five-year age bands, by sex. We produce these data for England and Wales, regions, and Lower tier local authorities (LTLAs) where there are 200 or more usual residents in that population group. The small population part 1 data include six new populations by five-year age bands, by sex:
Eritrean – ethnic group – National, Region and LTLA
Romanian – ethnic group – National, Region and LTLA
Latin and Central South American – ethnic group – National, Region and LTLA
Alevi – religion group – National, Region and LTLA
Jewish – Religion and ethnic group – National
Valmiki – Religion and ethnic group – National and LTLA
Small population 2021 datasets – part 2
We have also produced datasets for separate small populations based on:
These cover the main characteristics such as:
economic activity status
provision of unpaid care
We produce data for England and Wales, Lower tier local authorities (LTLAs), or Middle layer Super Output areas (MSOAs) where there are 100 or more usual residents in the population group. Each small population group and their geographies available are:
British Sign Language (BSL) – Main language – National and LTLA
Caribbean – Ethnic group – National, LTLA and MSOA
Cornish – National identity – National and MSOA
Jain – Religion, ethnic group and both religion and ethnic group – National and MSOA
Kashmiri – Ethnic group – National and MSOA
Nepali (includes Gurkha) – Ethnic group – National and MSOA
Ravidassia – Religion, ethnic group and both religion and ethnic group – National and MSOA
Sikh – Religion, ethnic group and both religion and ethnic group – National and MSOA
Where and when to find the data
We released data on alternative population bases and small populations during phase three of the Census 2021 outputs release schedule.
Users can also find and download data on small populations on the Nomis website.
Following user feedback, we brought forward the release of data on the short-term population from phase three, into phase two. Get information on the datasets that we have produced for non-UK born short-term residents on the Nomis website.
If you need more information about our plans for Census 2021 alternative population bases or small populations, please contact us at email@example.com.