Llanfair Caereinion
| Llanfair Caereinion | |
|---|---|
| River Banwy Bridge with St Mary's Church in the distance. | |
| Location within Powys | |
| Population | 1,810 (2011) | 
| OS grid reference | SJ105065 | 
| Principal area | |
| Preserved county | |
| Country | Wales | 
| Sovereign state | United Kingdom | 
| Post town | WELSHPOOL | 
| Postcode district | SY21 | 
| Dialling code | 01938 | 
| Police | Dyfed-Powys | 
| Fire | Mid and West Wales | 
| Ambulance | Welsh | 
| UK Parliament | |
| Senedd Cymru – Welsh Parliament | |
Llanfair Caereinion (ⓘ) is a market town and community in Montgomeryshire, Powys, Wales upon the River Banwy (also known as the River Einion), around 8 miles west of Welshpool. In 2011 the ward had a population of 1,810; the town itself had a population of 1,055 according to Nomis.