Llanfair Dyffryn Clwyd is situated on the A525, approximately 2 miles south of Ruthin. Amenities in the village include a village hall, a bilingual primary school with around 100 pupils, a Grade II listed public house known as the White Horse, and a church dedicated to St Cynfarch and St Mary.

The first edition of the 25inch Ordnance Survey maps, published in 1875, shows that Llanfair Dyffryn Clwyd was a small village centred around the crossroads where the Wrexham Road (now the A525) and two other minor roads met. Amenities in the village included two alms-houses, a post office and a smithy, in addition to the White Horse, the church and a school. Little had changed by the time the second and third editions of the maps were published, in 1900 and 1912 respectively. Housing expanded in the twentieth and twenty-first centuries.

Sources: modern and historic Ordnance Survey maps; Coflein database; Cadw listed buildings database; Estyn report on Ysgol Llanfair Dyffryn Clwyd, published in December 2015

M. Ryder, RCAHMW, 9 June 2021