It was 8,175,124 at the census of 6/7 June 1841.
Later authors have suggested that this was a gross underestimate, with some estimates implying as many as 12.5 million. However, scholarly opinion tends today to accept the census figure as broadly accurate, despite the curiously small increase from the 1831 return of 7,767,401.
the population of Ireland at the start of the 17th century is estimated by church kept records of births and deaths to have been just under one million souls rising rapidly over the next 250 years to 8.1million mainly due to the introduction of the potatoe into Europe of the highly nutritious potatoe from south America in the late 16th century.
In 1800 the population of Ireland was about 5 million, with 200,000 in Dublin. However the Industrial revolution and especially the Irish Linen industry expanded explosively in the first half of the century, and this allowed the population to increase dramatically. By 1841, there were 8,175,000 people in Ireland. (This compares to the 1996 figure of 5,162,535.) Most Irish landlords were Protestants, simply because the law forbade Catholics from owning land. The Irish peasants themselves, who were both Protestant and Catholic, ate potatoes almost exclusively, since land was scarce and potatoes were an intensive crop. However, in 1845 a fungal disease called 'phytophthora infestans', or 'potato blight' struck and wiped out a third of the potato crop in Ireland. This was a disaster to the peasants who relied upon it. Those who lived near towns were better off, since towns had other sources of food, but things got very bad for those living in rural areas.
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Probably slightly over 5 million, though no complete census was taken until 1821. Linen didn't cause the doubling of population in the century to 1845, the potato did, hence the devastating impact of the subsequent blight.
New York was not yet inhabited by Europeans in 1600. Henry Hudson came in 1609 and the Dutch soon followed and began to settle. The population in 1600 consisted of the Native tribes of the area such as the Lenape. They did not keep written records so it is hard to say with certainty what the population was.
The population of Ireland in 1800 was estimated to be around 5.3 million.
Around 4.1 million in England, 0.3m in Wales and 0.8m in Scotland. Ireland's population is unknown but was probably in the region of 1.5-2m.
The population of Ireland in 1942 was approximately 2.9 million.
The population of the whole of Ireland is approximately 6.9 million people. This includes both the Republic of Ireland, with a population of around 4.9 million, and Northern Ireland, with a population of around 1.8 million.
The population of Ireland in 1916 was approximately 4.4 million people.
As of 2016, the population of Kilkenny, Ireland was estimated to be around 26,512.
As of the latest available data, the population of Kildare in Ireland is approximately 222,504.
The population in Ireland in 1750 was 3.2 m.
Ireland was a country in 1800.
Samuel Ireland died in 1800.
The only way to transport between Ireland and England in 1800 was by boats and ships.
the population in Melbourne in the 1800 is 123456789
5,308,483 was the population of the US in the year 1800.
Intel Ireland's population is 4,500.
The population of Tesco Ireland is 2,008.
The population of Church of Ireland is 365,000.
The population of Bank of Ireland is 15,868.
The population of Tesco Ireland is 13,500.
The Republic of Ireland has a population of about 4,470,700 residents.Northern Ireland has a population of about 1,775,000 residents._______________Update (2013/14): About 6.45 million in the whole island (4.6m in the Republic and 1.85m in Northern Ireland).The Republic of Ireland has a population of about 4,470,700 residents.Northern Ireland has a population of about 1,775,000 residents.