It still has two inns, the Hand and the West Arms, which originally served drovers taking their flocks to market: the inns' names are a reference to the armorial bearings of two prominent landowning families, the Myddletons of Chirk Castle and the Wests of Ruthin Castle.

The churchyard contains a mound, the Tomen Garmon, which may be of Bronze Age origin, accompanied by ancient yew trees.

[4] From the mid-16th century until 1974, Llanarmon Dyffryn Ceiriog was governed by the then administrative county of Denbighshire, which was divided into various rural districts.

Clwyd and Glyndŵr District were dissolved in 1996, and Llanarmon Dyffryn Ceiriog became a part of the new unitary authority of Wrexham County Borough, in which it remains to the present day.

Since 2024, it has been represented at the UK Parliament by Steve Witherden, the Labour Party MP for Montgomeryshire and Glyndŵr.