Anglesey
Great Britain, post 19th-century reformsWith the creation of elected county councils in 1889, the administrative headquarters in some cases moved away from the traditional county town. Furthermore, in 1965 and 1974 there were major boundary changes in England and Wales and administrative counties were replaced with new metropolitan and non-metropolitan counties. The boundaries underwent further alterations between 1995 and 1998 to create unitary authorities, and some of the ancient counties and county towns were restored. Before 1974, many of the county halls were in towns and cities that had the status of a county borough i.e. a borough outside the county council's jurisdiction.
Wales- Due to its better transport links and more central location, some administrative functions were moved to Llangefni.
- Cardigan was often still referred to as 'the county town' due to the name link. However, assizes were held at Lampeter while Aberystwyth housed the administration of the county council. Aberystwyth was therefore the de facto county town.
- Due to its better transport links and more central location, some administrative functions were moved to Llandrindod Wells.
The follow lists the location of the administration of each of the 31 local authorities in the Republic of Ireland, with 26 of the traditional counties.
| County | Councils | County town | Notes | | County Carlow | Carlow County Council | Carlow | | | County Cavan | Cavan County Council | Cavan | | | County Clare | Clare County Council | Ennis | | | County Cork | Cork County Council | Cork city | | | County Cork | Cork City Council | Cork city | | | County Donegal | Donegal County Council | Lifford | | | County Dublin | Dublin City Council | Dublin city | | | County Dublin | | Dún Laoghaire | Until 1994, formed Dublin County Council, with its administrative offices in Dublin city | | County Dublin | Fingal County Council | Swords | Until 1994, formed Dublin County Council, with its administrative offices in Dublin city | | County Dublin | South Dublin County Council | Tallaght | Until 1994, formed Dublin County Council, with its administrative offices in Dublin city | | County Galway | Galway City Council | Galway city | | | County Galway | Galway County Council | Galway city | | | County Kerry | Kerry County Council | Tralee | | | County Kildare | Kildare County Council | Naas | | | County Kilkenny | Kilkenny County Council | Kilkenny | | | County Laois | Laois County Council | Portlaoise | Called Maryborough until 1929 | | County Leitrim | Leitrim County Council | | | | County Limerick | Limerick City and County Council | Limerick | | | County Longford | Longford County Council | Longford | | | County Louth | Louth County Council | Dundalk | | | County Mayo | Mayo County Council | Castlebar | | | County Meath | Meath County Council | Navan | previously Trim was the administrative town | | County Monaghan | Monaghan County Council | Monaghan | | | County Offaly | Offaly County Council | Tullamore | Prior to 1883, the county town was Daingean, then known as Philipstown | | Roscommon County Council | Roscommon | | | County Sligo | Sligo County Council | Sligo | | | Tipperary County Council | Clonmel/Nenagh | Until the Local Government Reform Act 2014, these were respectively the administrative towns of South Tipperary County Council and North Tipperary County Council | | County Waterford | Waterford City and County Council | Waterford | Prior to the merger of Waterford County Council with Waterford City Council in 2014, Dungarvan was the county town and administrative centre of County Waterford. | | County Westmeath | Westmeath County Council | Mullingar | | | County Wexford | Wexford County Council | Wexford | | | County Wicklow | Wicklow County Council | Wicklow | |
Northern IrelandNote – Despite the fact that Belfast is the capital of Northern Ireland, it is not the county town of any county. Greater Belfast straddles two counties – Antrim and Down.
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