Demography

2011 United Kingdom Census
Country of birth	Population
United Kingdom	5,175,677
India	262,247
Poland	158,300
Ireland	129,807
Nigeria	114,718
Pakistan	112,457
Bangladesh	109,948
Jamaica	87,467
Sri Lanka	84,542
France	66,654

The 2011 census recorded that 2,998,264 people or 36.7% of London's population are foreign-born making London the city with the second largest immigrant population, behind New York City, in terms of absolute numbers. About 69% of children born in London in 2015 had at least one parent who was born abroad. The table to the right shows the most common countries of birth of London residents. Note that some of the German-born population, in 18th position, are British citizens from birth born to parents serving in the British Armed Forces in Germany.

With increasing industrialisation, London's population grew rapidly throughout the 19th and early 20th centuries, and it was for some time in the late 19th and early 20th centuries the most populous city in the world. Its population peaked at 8,615,245 in 1939 immediately before the outbreak of the Second World War, but had declined to 7,192,091 at the 2001 Census. However, the population then grew by just over a million between the 2001 and 2011 Censuses, to reach 8,173,941 in the latter enumeration.

However, London's continuous urban area extends beyond the borders of Greater London and was home to 9,787,426 people in 2011, while its wider metropolitan area has a population of between 12 and 14 million depending on the definition used. According to Eurostat, London is the most populous city and metropolitan area of the European Union and the second most populous in Europe. During the period 1991–2001 a net 726,000 immigrants arrived in London.

The region covers an area of 1,579 square kilometres (610 sq mi). The population density is 5,177 inhabitants per square kilometre (13,410/sq mi), more than ten times that of any other British region. In terms of population, London is the 19th largest city and the 18th largest metropolitan region.

Age structure and median age

Children (aged younger than 14 years) constitute 21 percent of the population in Outer London, and 28 percent in Inner London; the age group aged between 15 and 24 years is 12 percent in both Outer and Inner London; those aged between 25 and 44 years are 31 percent in Outer London and 40 percent in Inner London; those aged between 45 and 64 years form 26 percent and 21 percent in Outer and Inner London respectively; while in Outer London those aged 65 and older are 13 percent, though in Inner London just 9 percent.

The median age of London in 2017 is 36.5 years old.

Ethnic groups

According to the Office for National Statistics, based on the 2011 Census estimates, 59.8 per cent of the 8,173,941 inhabitants of London were White, with 44.9 per cent White British, 2.2 per cent White Irish, 0.1 per cent gypsy/Irish traveller and 12.1 per cent classified as Other White.

20.9 per cent of Londoners are of Asian and mixed-Asian descent. 19.7 per cent are of full Asian descent, with those of mixed-Asian heritage comprising 1.2 of the population. Indians account for 6.6 per cent of the population, followed by Pakistanis and Bangladeshis at 2.7 per cent each. Chinese peoples account for 1.5 per cent of the population, with Arabs comprising 1.3 per cent. A further 4.9 per cent are classified as "Other Asian".

15.6 per cent of London's population are of Black and mixed-Black descent. 13.3 per cent are of full Black descent, with those of mixed-Black heritage comprising 2.3 per cent. Black Africans account for 7.0 per cent of London's population, with 4.2 per cent as Black Caribbean and 2.1 per cent as "Other Black". 5.0 per cent are of mixed race.

As of 2007, Black and Asian children outnumbered White British children by about six to four in state schools across London. 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 2010update, London's foreign-born population was 2,650,000 (33 per cent), up from 1,630,000 in 1997.

The 2011 census showed that 36.7 per cent of Greater London's population were born outside the UK. A portion of the German-born population are likely to be British nationals born to parents serving in the British Armed Forces in Germany. Estimates produced by the Office for National Statistics indicate that the five largest foreign-born groups living in London in the period July 2009 to June 2010 were those born in India, Poland, the Republic of Ireland, Bangladesh and Nigeria.

Religion

According to the 2011 Census, the largest religious groupings are Christians (48.4 per cent), followed by those of no religion (20.7 per cent), Muslims (12.4 per cent), no response (8.5 per cent), Hindus (5.0 per cent), Jews (1.8 per cent), Sikhs (1.5 per cent), Buddhists (1.0 per cent) and other (0.6 per cent).

London has traditionally been Christian, and has a large number of churches, particularly in the City of London. The well-known St Paul's Cathedral in the City and Southwark Cathedral south of the river are Anglican administrative centres, while the Archbishop of Canterbury, principal bishop of the Church of England and worldwide Anglican Communion, has his main residence at Lambeth Palace in the London Borough of Lambeth.

Important national and royal ceremonies are shared between St Paul's and Westminster Abbey. The Abbey is not to be confused with nearby Westminster Cathedral, which is the largest Roman Catholic cathedral in England and Wales. Despite the prevalence of Anglican churches, observance is very low within the Anglican denomination. Church attendance continues on a long, slow, steady decline, according to Church of England statistics.

London is also home to sizeable Muslim, Hindu, Sikh, and Jewish communities.

Notable mosques include the East London Mosque in Tower Hamlets, which is allowed to give the Islamic call to prayer through loudspeakers, the London Central Mosque on the edge of Regent's Park and the Baitul Futuh of the Ahmadiyya Muslim Community. Following the oil boom, increasing numbers of wealthy Middle-Eastern Arab Muslims have based themselves around Mayfair, Kensington, and Knightsbridge in West London. There are large Bengali Muslim communities in the eastern boroughs of Tower Hamlets and Newham.

Large Hindu communities are in the north-western boroughs of Harrow and Brent, the latter of which hosts what was, until 2006, Europe's largest Hindu temple, Neasden Temple. London is also home to 44 Hindu temples, including the BAPS Shri Swaminarayan Mandir London. There are Sikh communities in East and West London, particularly in Southall, home to one of the largest Sikh populations and the largest Sikh temple outside India.

The majority of British Jews live in London, with significant Jewish communities in Stamford Hill, Stanmore, Golders Green, Finchley, Hampstead, Hendon and Edgware in North London. Bevis Marks Synagogue in the City of London is affiliated to London's historic Sephardic Jewish community. It is the only synagogue in Europe which has held regular services continuously for over 300 years. Stanmore and Canons Park Synagogue has the largest membership of any single Orthodox synagogue in the whole of Europe, overtaking Ilford synagogue (also in London) in 1998. The community set up the London Jewish Forum in 2006 in response to the growing significance of devolved London Government.

Accents

The accent of a 21st-century Londoner varies widely; what is becoming more and more common amongst the under-30s however is some fusion of Cockney with a whole array of ethnic accents, in particular Caribbean, which help to form an accent labelled Multicultural London English (MLE). The other widely heard and spoken accent is RP (Received Pronunciation) in various forms, which can often be heard in the media and many of other traditional professions and beyond, although this accent is not limited to London and South East England, and can also be heard selectively throughout the whole UK amongst certain social groupings. Since the turn of the century the Cockney dialect is less common in the East End and has 'migrated' east to Havering and the county of Essex.