page_title: Republic of Ireland
section_title: Demographics
hierarchical_section_title: Republic of Ireland / Demographics
caption_attribution_description: English: Ireland's population (1951-2011).
context_page_description: Ireland, also known as the Republic of Ireland, is a country in north-western Europe occupying 26 of 32 counties of the island of Ireland. The capital and largest city is Dublin, which is located on the eastern side of the island. Around 40% of the country's population of 4.9 million people resides in the Greater Dublin Area. The sovereign state shares its only land border with Northern Ireland which is part of the United Kingdom. It is otherwise surrounded by the Atlantic Ocean, with the Celtic Sea to the south, St George's Channel to the south-east, and the Irish Sea to the east. It is a unitary, parliamentary republic. The legislature, the Oireachtas, consists of a lower house, Dáil Éireann, an upper house, Seanad Éireann, and an elected President who serves as the largely ceremonial head of state, but with some important powers and duties. The head of government is the Taoiseach, who is elected by the Dáil and appointed by the President; the Taoiseach in turn appoints other government ministers.
  The state was created as the Irish Free State in 1922 as a result of the Anglo-Irish Treaty.
context_section_description: Genetic research suggests that the earliest settlers migrated from Iberia following the most recent ice age. After the Mesolithic, Neolithic and Bronze Age, migrants introduced a Celtic language and culture. Migrants from the two latter eras still represent the genetic heritage of most Irish people. Gaelic tradition expanded and became the dominant form over time. Irish people are a combination of Gaelic, Norse, Anglo-Norman, French, and British ancestry.
  The population of Ireland stood at 4,588,252 in 2011, an increase of 8.2% since 2006. As of 2011, Ireland had the highest birth rate in the European Union (16 births per 1,000 of population). In 2014, 36.3% of births were to unmarried women. Annual population growth rates exceeded 2% during the 2002–2006 intercensal period, which was attributed to high rates of natural increase and immigration. This rate declined somewhat during the subsequent 2006–2011 intercensal period, with an average annual percentage change of 1.6%. The total fertility rate (TFR) in 2017 was estimated at 1.80 children born per woman, below the replacement rate of 2.1, it remains considerably below the high of 4.2 children born per woman in 1850. In 2018 the median age of the Irish population was 37.1 years.
  At the time of the 2016 census, the number of non-Irish nationals was recorded at 535,475. This represents a 2% decrease from the 2011 census figure of 544,357. The five largest sources of non-Irish nationals were Poland (122,515), the UK (103,113), Lithuania (36,552), Romania (29,186) and Latvia (19,933) respectively. Compared with 2011, the number of UK, Polish, Lithuanian and Latvian nationals fell. There were four new additions to the top ten largest non-Irish nationalities in 2016: Brazilian (13,640), Spanish (12,112), Italian (11,732), and French (11,661).
caption: Population of Ireland since 1951
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