Cefn is a local government community

Community (Wales)

A community is a division of land in Wales that forms the lowest-tier of local government in Wales. Welsh communities are analogous to civil parishes in England....

, the lowest tier of local government, part of Wrexham County Borough in Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

.

The community of Cefn comprises the villages of Cefn Mawr

Cefn Mawr

Cefn Mawr is a large village in the community of Cefn within the County Borough of Wrexham, Wales. Its name translates as "great ridge".The community of Cefn comprises the villages of Cefn Mawr, Cefn-bychan , Acrefair, Penybryn, Newbridge, Plasmadoc and Rhosymedre and is situated on the northern...

, Cefn-bychan, Acrefair

Acrefair

Acrefair is a village in the county borough of Wrexham, Wales. It was formerly part of the ancient parish of Ruabon, and is located between the towns of Wrexham and Llangollen. It is close to the villages of Trefor, Cefn Mawr, Ruabon and Plas Madoc...

, Penybryn, Newbridge, Plasmadoc and Rhosymedre

Rhosymedre

Rhosymedre is a village near Ruabon in north east Wales. The village is within the community of Cefn and the county borough of Wrexham.The Anglican church, which was consecrated in 1837, is dedicated to St John the Evangelist, and is part of the Diocese of St Asaph...

 and is situated on the northern slopes of the Dee

River Dee, Wales

The River Dee is a long river in the United Kingdom. It travels through Wales and England and also forms part of the border between the two countries....

 Valley. As well as the former industrial villages around Acrefair, it also includes some rural areas to the north on the slopes of Ruabon Mountain. At the time of the 2001 census, it had a total population of 6,669 in 2,763 households.

The area was formerly the township

Township (England)

In England, a township is a local division or district of a large parish containing a village or small town usually having its own church...

s of Coed Cristionydd and Cristionydd Cynrig (Cristionydd Kenrick), which became part of the parish of Ruabon

Ruabon

Ruabon is a village and community in the county borough of Wrexham in Wales.More than 80% of the population of 2,400 were born in Wales with 13.6% speaking Welsh....

. Parts of the townships were formed into the new parish of Rhosymedre in 1844. The corresponding civil parish

Civil parish

In England, a civil parish is a territorial designation and, where they are found, the lowest tier of local government below districts and counties...

, Cefn Mawr, was formed into the community of Cefn in 1974 under the terms of the 1972 Local Government Act.