| Tremeirchion | |
|---|---|
 The Salusbury Arms public house, Tremeirchion | |
  Tremeirchion Location within Denbighshire | |
| Population | 703 (Parish) 1,649 (Ward)[1] (2011 Census) |
| OS grid reference | SJ081729 |
| • Cardiff | 121 mi (195 km) |
| • London | 178 mi (286 km) |
| Community |
|
| Principal area | |
| Preserved county | |
| Country | Wales |
| Sovereign state | United Kingdom |
| Post town | ST. ASAPH |
| Postcode district | LL17 |
| Dialling code | 01745 |
| Police | North Wales |
| Fire | North Wales |
| Ambulance | Welsh |
| UK Parliament | |
| Senedd Cymru – Welsh Parliament | |
Tremeirchion (previously known as Lleweni) is a small residential community in Denbighshire, Wales. It lies on the B5429 road, to the north east of Denbigh and to the east of St Asaph. The community includes the village of Rhuallt.
The town was part of the traditional lands of the Salusbury family and the Cotton baronets. It was dominated by these two families until the early part of the 20th century. It briefly became well known during the fin de siècle after a series of dinosaur bones were found in the area.