Irish people
The population of Ireland is about 6.3 million, but it is estimated that 50 to 80 million people around the world have Irish forebears, making the Irish diaspora one of the largest of any nation. Historically, emigration from Ireland has been the result of conflict, famine and economic issues. People of Irish descent are found mainly in English-speaking countries, especially Great Britain, the United States, Canada and Australia. There are also significant numbers in Argentina, Mexico and New Zealand. The United States has the most people of Irish descent, while in Australia those of Irish descent are a higher percentage of the population than in any other country outside Ireland. Many Icelanders have Irish and Scottish Gaelic forebears.
Republic of Ireland
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).