Census 2021 outputs: content design and release phase proposals

Closes 5 Oct 2021

5a: Alternative population bases

Alternative population bases allocate those counted in the census to different geographical locations where individuals could be counted.

The data on alternative population bases that we made available following the 2011 Census are accessible on the alternative population statistics pages of the ONS website.

Alternative population bases are those that:

  • move usual residents to different locations based on their characteristics
  • report on a population that is not usually resident

Alternative population bases for Census 2021

Workplace: The workplace is an estimate of the population working in an area. It includes usual residents aged 16 to 74 whose usual place of work is in the area. We include people who work mainly at or from home, or do not have a fixed place of work, in the area of their usual residence.

Workday: 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.

Out-of-term: This 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.

Short-term resident:  Outputs for short-term residents provide characteristics of people who were not born in the UK and who intend to stay in the UK for 3 to 12 months. Because of the restrictions on travel that the coronavirus pandemic caused, this population may be much smaller than in 2011.

Second address: Second address estimates provide information on the number of people who have a second address outside of the local authority where they are usually resident.

Due to a higher risk of disclosure for alternative population bases, we need to carefully assess what information can be published. Please provide as much detail as possible of the tables required, state the geographies, variables and classifications required.

The information you provide will be used when finalising proposals for publishing data on alternative populations.  Please provide as much detail as possible to justify your needs. For example, what policy or planning decisions would the data analysis affect? 

Which alternative population bases do you need for your analysis?

Select all that apply.  For each of the listed populations, a question on planned analysis follows.

What analysis do you plan on the workplace population?
What analysis do you plan on the workday population?
What analysis do you plan on the out-of-term population?
What analysis do you plan on the short-term resident population?
What analysis do you plan on the second residence population?
What other alternative population bases do you require and what analysis do you plan to undertake on that data?
Do the plans for Census 2021 analysis on alternative population bases meet your data user needs?

These plans are included in the Census 2021 analysis programme proposals (PDF, 504.8KB) document within the section for the related topic.  For example, analysis related to second addresses is included within the demography topic. If you have described your needs in another part of the consultation you do not need to repeat them here.