The concept of a county town is ill-defined and unofficial. The attribution may have fallen to the town used as the seat for the election of county members of parliament or for some administrative or judicial functions, which has established it over time as the de facto main town of a county.
County towns in the United Kingdom
Where the county town is a city it is shown in bold.
County towns in the Republic of Ireland
The term county capital is also used. Where the county town is a city it is shown in bold.