information:extraction
Demographics

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 5,149,139 in 2022, an increase of 8% since 2016. 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 2022 census, the number of non-Irish nationals was recorded at 631,785. This represents an 8% increase from the 2016 census figure of 535,475. The five largest sources of non-Irish nationals were Poland (93,680), the UK (83,347), India (45,449), Romania (43,323), Lithuania (31,177), and Latvia (27,338) respectively. The non-Irish nationalities which saw the largest increase from 2016 were India (+33,984), Romania (+14,137), Brazil (+13,698), Ukraine (+10,006). The non-Irish nationalities which saw the largest decrease from 2016 were Poland (−28,835), UK (−19,766), Lithuania (−5,375), Latvia (−1,633), and Slovakia (−1,117).