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.
English people
From the earliest times English people have left England to settle in other parts of Great Britain and Northern Ireland, but it is not possible to identify their numbers, as British censuses have historically not invited respondents to identify themselves as English. However, the census does record place of birth, revealing that 8.08% of Scotland's population, 3.66% of the population of Northern Ireland and 20% of the Welsh population were born in England. Similarly, the census of the Republic of Ireland does not collect information on ethnicity, but it does record that there are over 200,000 people living in Ireland who were born in England and Wales.