The population of the United Kingdom was estimated at 67,596,281 in 2022. It is the 21st most populated country in the world and has a population density of 279 people per square kilometre, with England having significantly greater density than Wales, Scotland, and Northern Ireland. Almost a third of the population lives in south east England, which is predominantly urban and suburban, with 8,866,180 people in the capital city, London, whose population density was 5,640 inhabitants per square kilometre (14,600/sq mi) in 2022.
Irish Travellers, also known as Pavees or Mincéirs, are a traditionally peripatetic indigenous ethno-cultural group originating in Ireland.
Demographics of Wales include population, place of birth, age, ethnicity, religion, and number of marriages in Wales.
The demography of England has since 1801 been measured by the decennial national census, and is marked by centuries of population growth and urbanization. Due to the lack of authoritative contemporary sources, estimates of the population of England for dates prior to the first census in 1801 vary considerably. The population of England at the 2021 census was about 56,489,800.
A nationwide census, known as Census 2001, was conducted in the United Kingdom on Sunday, 29 April 2001. This was the 20th UK census and recorded a resident population of 58,789,194.
White British is an ethnicity classification used for the native White population identifying as English, Scottish, Welsh, Cornish, Northern Irish, or British in the United Kingdom Census. In the 2011 census, the White British population was 49,997,686, 81.5% of Great Britain's total population. For the United Kingdom entirely, due to different reporting measures within Northern Ireland which includes all those who identified as British with those who identified as Irish, an amalgamated total of 52,320,080 including those who identified as White Irish in Great Britain is given making up 82.8% of the population.
Mixed is an ethnic group category that was first introduced by the United Kingdom's Office for National Statistics for the 2001 Census. Colloquially, it refers to British citizens or residents whose parents are of two or more races or ethnic backgrounds. The Mixed or Multiple ethnic group numbered just under 1.8 million in the 2021 United Kingdom census or 2.7% of the total UK population.
The Romani people have several distinct populations, the largest being the Roma and the Calé, who reached Anatolia and the Balkans in the early 12th century, from a migration out of the Indian subcontinent beginning about 1st century – 2nd century AD. They settled in the areas of present-day Turkey, Greece, Serbia, Romania, Croatia, Moldova, Bulgaria, North Macedonia, Hungary, Albania, Kosovo, Bosnia and Herzegovina, Czech Republic, Slovenia and Slovakia, by order of volume, and Spain. From the Balkans, they migrated throughout Europe and, in the nineteenth and later centuries, to the Americas. The Roma population in the United States is estimated at more than one million.
A number of different systems of classification of ethnicity in the United Kingdom exist. These schemata have been the subject of debate, including about the nature of ethnicity, how or whether it can be categorised, and the relationship between ethnicity, race, and nationality.
The term Other White, or White Other, is a classification of ethnicity in the United Kingdom, used in documents such as the 2021 United Kingdom Census, to describe people who identify as white persons who are not of the English, Welsh, Scottish, Roma, Irish or Irish Traveller ethnic groupings. In Scotland, the term Other White is also used to refer collectively to those not of Scottish or Other British ethnicity, in which case it also includes those of a Gypsy, Roma, Irish or Irish Traveller background.
British Arabs are British citizens of Arab descent. They share a common Arab ethnicity, culture, language and identity from different Arab countries. Arabs also come from non-Arab countries as ethnic minorities.
Northern Ireland is the smallest of the four components of the United Kingdom in terms of both area and population, containing 2.9% of the total population and 5.7% of the total area of the United Kingdom. It is the smaller of the two political entities on the island of Ireland by area and population, the other being the Republic of Ireland. Northern Ireland contains 27.1% of the total population and 16.75% of the total area of the island of Ireland.
White Irish is an ethnicity classification used in the census in the United Kingdom for England, Scotland and Wales. In the 2021 census, the White Irish population was 564,342 or 0.9% of Great Britain's total population. This was a slight fall from the 2011 census which recorded 585,177 or 1% of the total population.
A census of the population of the United Kingdom is taken every ten years. The 2011 census was held in all counties of the UK on 27 March 2011. It was the first UK census which could be completed online via the Internet. The Office for National Statistics (ONS) is responsible for the census in England and Wales, the General Register Office for Scotland (GROS) is responsible for the census in Scotland, and the Northern Ireland Statistics and Research Agency (NISRA) is responsible for the census in Northern Ireland.
Cornwall is a unitary authority and ceremonial county of England in the United Kingdom. At the 2011 census it had a population of 532,000. Cornwall is the homeland of the Cornish people, and many within Cornwall identify with a Cornish ethnic or national identity, although, due to Cornwall's political status as part of England and the United Kingdom, as well as in-migration from other parts of the UK and EU, additional identities such as English, British, and European may also be adopted.
White Polish is an ethnicity classification used in Scotland at the 2011 United Kingdom Census. In the 2021 census, the White Polish ethnic group totalled 705,080 in Great Britain, 90,736 of which were in Scotland making up 1.67% of the total population of Scotland at the time.
White people in the United Kingdom are a multi-ethnic group consisting of indigenous and European UK residents who identify as and are perceived to be 'white people'. White people constitute the historical and current majority of the people living in the United Kingdom, with 83.0% of the population identifying as white in the 2021 United Kingdom census.
Romani people have been recorded in the United Kingdom since at least the early 16th century. There are estimated to be around 225,000 Romani residing in the UK. This includes the Romanichal, Kale, Scottish Lowland Roma and a sizeable population of Roma from Continental Europe, who immigrated into the UK in the late 1990s/early 2000s and after EU expansion in 2004. They are considered part of the Gypsy, Roma and Traveller (GRT) community.
Gypsy, Roma and Traveller is an umbrella term used in the United Kingdom to represent several diverse ethnic groups which have a shared history of nomadism. In the phrase GRT, The Gypsy grouping encompasses Romani subgroups that have resided in Britain since the 16th century, the Romanichal and Kale but also those from other Romani subgroups. The British government and British GRT rights groups understand the term Roma as encompassing more recent Romani migrants from mainland Europe and their descendants. Travellers include Irish Travellers (Mincéirí) residing in Britain and Northern Ireland and the traditional travelling people indigenous to Britain such as Scottish Travellers. Although these groups' lifestyles traditionally involved travel, most GRT people now live in houses or permanent caravan berths.
In the 2011 Scottish census conducted by the Scottish Government, Scotland's population was recorded to be 96% White, a 2% decrease from the previous census held in 2001. 91.8% of Scotland's population claimed to be White Scottish or White: Other British, whilst 4.2% were recorded as Polish, Irish, Gypsy/Traveller or ‘White: Other’. The recorded population of Asian, African, Caribbean or Black, Mixed or Other ethnic groups doubled to 4% in the 2011 census.
United Kingdom: 73,709 – 0.1% (2021/22 Census)
England: 64,205 – 0.1% (2021) [1] 
Scotland: 3,343 – 0.06% (2022) [2] 
Wales: 3,552 – 0.1% (2021) [1] 
Northern Ireland: 2,609 – 0.1% (2021) [note 1] [3] 
