 In the Republic of Ireland , counties form the basis of the system of local government . Counties Dublin , Cork , Limerick , Galway , Waterford and Tipperary have been broken up into smaller administrative areas . However , they are still treated as counties for cultural and some official purposes , for example postal addresses and by the Ordnance Survey Ireland . Counties in Northern Ireland are no longer used for local governmental purposes , but , as in the Republic , their traditional boundaries are still used for informal purposes such as sports leagues and in cultural or tourism contexts . 
 In the Republic of Ireland , counties form the basis of the system of local government . Counties Dublin , Cork , Limerick , Galway , Waterford and Tipperary <a href='been_done' title='1'><mark>have</mark></a> been broken up into smaller administrative areas . However , they are still treated as counties for cultural and some official purposes , for example postal addresses and by the Ordnance Survey Ireland . Counties in Northern Ireland are no longer used for local governmental purposes , but , as in the Republic , their traditional boundaries are still used for informal purposes such as sports leagues and in cultural or tourism contexts . 
In the Republic of Ireland , counties form the basis of da system of local government . Counties Dublin , Cork , Limerick , Galway , Waterford and Tipperary done been broken up into smaller administrative areas . However , they r still treated as counties for cultural and sum official purposes , for example postal addresses and by the Ordnance Survey Ireland . Counties in Northern Ireland ain't no longer used fir local governmental purposes , but , as in the Republic , their traditional boundaries arrtill used for informal purposes such as sports leagues and in cultural or tourism contexts .