4.5 million live in the Republic and 1.5 live in Northern Ireland. The east has by far the most people and the weast has by far the least with the middle somewhere in between.
Ireland
That depends on what is meant by "Tons of people". Ireland is not a densely populated country. There are over 4.5 million people in Ireland. Parts of Ireland are not highly populated, particularly the rural areas of the west of Ireland.
The Celts.
County Leitrim is the least populated at around 28,500 people.
ireland and the UK
It is for all the size it is.
Most people in Ireland are Christian, with the majority being Catholic.
Dublin and Cork.
Ireland is relatively low populated, having about 6 million people living on the island of Ireland.
England, although some may come from Ireland. because the English migrated to Ireland and populated it.
The second most populated City in Ireland is Belfast, with a population of approximately 268,000! The second most populated City in the Republic of Ireland is Cork with a population of approximately 190,000. Making it the third largest city in Ireland behind Belfast and Dublin respectively!
Ireland is not relatively densely populated. One estimate is 65 persons per square kilometer, compared with an average of 256 per km2 for the UK. It is less than in any country in Western Europe excluding Russia.