The population of an area changes as people move in and out of an area to work. For the workday population the usually resident population is re-distributed to their places of work, while those not in work are recorded at their usual residence. This map shows the percentage change, for 16-74 year olds, experienced in each area, as recorded by the 2011 Census. Hover over the map to explore the change in your area.
One drawback of using traditional choropleth maps to display data is that urban areas with high populations are displayed very small on maps. In fact earlier Census analysis showed that 95 per cent of the population lived in built-up areas, but that the total land mass of these areas was less than 10 per cent. Traditional maps therefore tend to highlight patterns in the least important areas, i.e. where few people live.
In contrast cartograms represent areas in relation to their population size. In this case the cartogram is scaled according to the population you choose, usually resident or workday. Watch areas such as inner London expand as you move from the usually resident population to the workday.