Dublin.
County Leitrim has the smallest population in Ireland.
Smallest county population wise in Ireland is Leitrim 27-28 thousand.
The most westerly point in Ireland is in county Kerry, in the southwest of Ireland.
At the most recent census, in 2011, the population of Limerick city and county was 191,809 people.
Dublin.
Most of the population live in Dublin, the capital city.
Dundalk is the county town of County Louth in the Republic of Ireland. It is the largest town in Ireland by population and area.
County Leitrim is the least populated at around 28,500 people.
The most northerly point in Ireland is Malin Head which is in county Donegal.
In the 2006 census of Ireland, the population of county Kildare was 186,335.
there were rich people in every county - Dublin had more than most because it was the capital city and had a bigger population
That would depend on what criteria you judge "main county" by. Dublin would be the popular answer. It contains the largest city and the capital of Ireland and it has the largest population, but it is the third smallest county in Ireland. Cork is the largest county.