This dataset provides 2011 estimates that classify usual residents in United Kingdom by sex. The estimates are as at census day, 27 March 2011.

This key demographic topic provides information needed by all users of census data, and is essential for producing statistical breakdowns of the population, population estimates and projections.

In Northern Ireland this table is numbered QS105NI.

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.