This dataset provides 2011 Census estimates that classify the workplace population in England and Wales by length of residence in the United Kingdom (UK). The estimates are as at census day, 27 March 2011.

This is the first time this information has been available from the census. It helps to provide accurate migration trends to the UK and allows increased understanding of the proportion of migrants that remain in the UK. It also helps to determine the number of short-term migrants, which allows national and local government to better understand the size of the population so they can plan, fund and provide appropriate services.

In order to protect against disclosure of personal information from the 2011 Census, there has been swapping of records in the Census database between different geographic areas, and so some counts will be affected. In the main, the greatest effects will be at the lowest geographies, since the record swapping is targeted towards those households with unusual characteristics in small areas.

More details on the ONS Census disclosure control strategy may be found on the Statistical Disclosure Control page on the ONS web site.