Across London, Black and Asian children outnumber White British children by about six to four in state schools. Altogether at the 2011 census, of London's 1,624,768 population aged 0 to 15, 46.4 per cent were White, 19.8 per cent were Asian, 19 per cent were Black, 10.8 per cent were Mixed and 4 per cent represented another ethnic group. In January 2005, a survey of London's ethnic and religious diversity claimed that there were more than 300 languages spoken in London and more than 50 non-indigenous communities with a population of more than 10,000. Figures from the Office for National Statistics show that, in 2010[update], London's foreign-born population was 2,650,000 (33 per cent), up from 1,630,000 in 1997.
A 2005 survey indicated that how many communities comprised of non-indigenous people existed in London?
more than 50