The census data has also been used to show changes in where people are working around London. The brighter the colour, the greater the change of employment density.
A new series of maps have been published showing the dramatic changes in London's population density. The maps have been compiled using census data from 2001 and 2011. The brighter the colour, the greater the change.
Taker a look at an interactive version of the map here.
There will be a million more Londoners by 2036 if the capital's population continues to grow at the current rate. Today members of the London Assembly will be hearing from experts on the measures that need to be in place to provide for the needs of the expanding population.