Counties of Ireland List of counties List of counties

| County | Irish_name | County_town | Most_populous_city_town | Province | Region |
|---|---|---|---|---|---|
| Leitrim | Liatroim (Contae Liatroma) | Carrick-on-Shannon | Carrick-on-Shannon | Connacht | Border – IE011 |
| Limerick | Luimneach (Contae Luimnigh) | Limerick | Limerick | Munster | Mid-West – IE023 |
| Londonderry | Doire (Contae Dhoire) | Coleraine | Derry | Ulster | Northern Ireland – UKN0 |
| Longford | An Longfort (Contae an Longfoirt) | Longford | Longford | Leinster | Midlands – IE012 |
| Louth | Lú (Contae Lú) | Dundalk | Drogheda | Leinster | Border – IE011 |
| Mayo | Maigh Eo (Contae Mhaigh Eo) | Castlebar | Castlebar | Connacht | West – IE013 |
| Meath | An Mhí (Contae na Mí) | Navan (previously Trim ) | Navan | Leinster | Mid-East – IE022 |
| Monaghan | Muineachán (Contae Mhuineacháin) | Monaghan | Monaghan | Ulster | Border – IE011 |
| Offaly | Uíbh Fhailí (Contae Uíbh Fhailí) | Tullamore (formerly Philipstown | Tullamore | Leinster | Midlands – IE012 |