However, it created the concept of preserved counties based on their areas, to be used for purposes such as Lieutenancy.

The preserved counties and principal areas affected are given below.

The constituency is one of eight covering the preserved county of Gwent.

They are entirely within the preserved county of Gwynedd.

It is entirely within the preserved county of West Glamorgan.

Wales is also divided into preserved counties, which are used for ceremonial purposes.

It is entirely within the preserved county of Gwynedd.

Until the 2010 election, the constituency used to include a small part of the preserved county of Powys.

Aberconwy constituency is entirely within the preserved county of Clwyd.

The pre-1996 boundaries were retained as a preserved county for a few purposes such as the Lieutenancy.