This is the Usual Resident Population data (KS101) from the 2011 Census. The data provides the number of people usually resident in an area by gender, population density and communal establishment populations.
A usual resident is defined as someone who spent most of their time at a specific address.
The 2011 census in England and Wales took place on 27th March 2011. It provides a snapshot of the population and its characteristics on that day.
Further information about the census estimates, including details about the methodology is available here: http://www.ons.gov.uk/ons/guide-method/census/2011/index.html
Area measurements are Standard Area Measurements (SAM) created using standard methodologies by ONS Geography for key geographies in the UK. These are land measurement figures defined by topographic boundaries (coastline and inland water) as at the end of 2011. Area measurements are in hectares - the metric unit of area defined as 10,000 square metres or approximately 2.47 acres - there are 100 hectares in 1 km2. Each area measurement used in census results is calculated by aggregating the SAM (measured to two decimal places) for each Output Area that has been best-fitted to each higher area.
A communal establishment is an establishment providing managed residential accommodation. ‘Managed’ in this context means full-time or part-time supervision of the accommodation.
A household is defined as one person living alone, or a group of people (not necessarily related) living at the same address who share cooking facilities and share a living room or sitting room or dining area. A household must contain at least one person whose place of usual residence is at the address. A group of short-term residents living together is not classified as a household, and neither is a group of people at an address where only visitors are staying."
Population density is the number of usual residents per hectare. A hectare is the metric unit of area defined as 10,000 square metres or approximately 2.47 acres.
Schoolchildren and students
Schoolchildren and students in full-time education studying away from their family home are treated as usually resident at their term-time address. Basic demographic information only (name, sex, age, marital status and relationship) is collected at their non term-time address (their ‘home’ or ‘vacation’ address). The information on families, household size and household composition for their non term-time address does not include them.
The main population base for outputs from the 2011 Census is the usual resident population as at census day 27 March 2011. Although the population base for enumeration included non-UK short-term residents, this population is analysed separately and is not included in the main outputs from the 2011 Census. All outputs, unless specified, are produced using only usual residents of the UK. For 2011 Census purposes, a usual resident of the UK is anyone who, on census day, was in the UK and had stayed or intended to stay in the UK for a period of 12 months or more, or had a permanent UK address and was outside the UK and intended to be outside the UK for less than 12 months.