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Llanllwchaiarn Welsh: Llanllwchaearn
Llanllwchaiarn Location within Powys
Population	848 (2011)[1]
OS grid reference	SO107921
Community	Newtown and Llanllwchaiarn
Principal area	Powys
Preserved county	Powys
Country	Wales
Sovereign state	United Kingdom
Post town	NEWTOWN
Postcode district	SY16
Dialling code	01686
Police	Dyfed-Powys
Fire	Mid and West Wales
Ambulance	Welsh
UK Parliament	Montgomeryshire
List of places UK Wales Powys 52°31′11″N 3°19′02″W / 52.5198°N 3.3172°W / 52.5198; -3.3172

Llanllwchaiarn or Llanllwchaearn (Welsh: [ɬanɬuː′χaɨarn]) in Welsh) is a village on the outskirts of Newtown in Powys, Wales. It forms part of the community of Newtown and Llanllwchaiarn.

Aberbechan Hall was a Tudor mansion in the eastern part of the parish demolished in 1870.

The wards of Llanllwchaiarn North and Llanllwchaiarn West elect up to four councillors to Newtown and Llanllwchaiarn Town Council.^[2]

• Oliver H. N, (2000), Llanllwchaiarn: Church and Parish, Newtown.

• Thomas Blayney, harpist

• St Llwchaiarn's Church, Llanllwchaiarn

• Photos of Llanllwchaiarn and surrounding area on geograph