Ireland has 4 provinces: Ulster, Munster, Connacht and Leinster.
Leinster is the biggest province with 14 counties: Longfrod, Westmeath, Meath, Louth, Dublin, Wicklow, Kildare, Wicklow, Kildare, Offaly, Laois, Kilkenny, Carlow and Wexford.
Ulster is the second largest province with 9 counties: Donegal, Tyrone, Derry, Down, Antrim, Armagh, Cavan, Fermanagh and Monaghan.
Then there is Munster with 6 counties: Waterford, Tipperary, Clare, Limerick, Cork and Kerry.
The smallest province is Connacht with only 5 counties: Galway, Mayo, Roscommon, Sligo and Leitrim.