Counties of Ireland List of counties List of counties

| County | Irish_name | County_town | Most_populous_city_town | Province | Region |
|---|---|---|---|---|---|
| Roscommon | Ros Comáin (Contae Ros Comáin) | Roscommon | Roscommon | Connacht | West – IE013 |
| Sligo | Sligeach (Contae Shligigh) | Sligo | Sligo | Connacht | Border – IE011 |
| Tipperary | Tiobraid Árann (Contae Thiobraid Árann) | Clonmel & (formerly) Cashel | Clonmel | Munster | n/a (see footnote) |
| Tyrone | Tír Eoghain (Contae Thír Eoghain) | Omagh | Omagh | Ulster | Northern Ireland – UKN0 |
| Waterford | Port Láirge (Contae Phort Láirge) | Dungarvan (previously Waterford ) | Waterford | Munster | South-East – IE024 |
| Westmeath | An Iarmhí (Contae na hIarmhí) | Mullingar | Athlone | Leinster | South-East – IE024 |
| Wexford | Loch Garman (Contae Loch Garman) | Wexford | Wexford | Leinster | South-East – IE024 |
| Wicklow | Cill Mhantáin (Contae Chill Mhantáin) | Wicklow | Bray | Leinster | Mid-East – IE022 |