Malltraeth (origin: Mall (corrupt, blasted, desolate, + Traeth (beach))) is a small village in the southwest of Anglesey, in the community of Bodorgan. It is now at the end of a large bay, which used to extend much further inland, almost creating a second sea strait in the area (the Menai Strait broke through following the end of the ice age). The population as of the 2011 census was only 255.^[1]

Malltraeth
Malltraeth Location within Anglesey
Population	255 (2011)
OS grid reference	SH406688
• Cardiff	129 mi (208 km)
• London	214.2 mi (344.7 km)
Community	Bodorgan
Principal area	Anglesey
Preserved county	Gwynedd
Country	Wales
Sovereign state	United Kingdom
Post town	BODORGAN
Postcode district	LL62
Dialling code	01407
Police	North Wales
Fire	North Wales
Ambulance	Welsh
UK Parliament	Ynys Môn
Senedd Cymru – Welsh Parliament	Ynys Môn
List of places UK Wales Anglesey 53°11′35″N 4°23′12″W / 53.1931°N 4.3868°W / 53.1931; -4.3868

After several abortive attempts, a 1 kilometre (0.62 mi) long 'cob' or dyke was completed across it during the 19th century, allowing land reclamation behind it. Despite this, the land remains very wet and prone to flooding, much of it of great natural and scientific importance as a result. The former salt marsh creeks are still visible on aerial photography and evident as shallow depressions in the fields. Coal mining occurred for a time in the underlying Carboniferous rock strata and the subsidence of these workings resulted in the lakes "Llynnau Gwaith-glo".

The village takes its name from the expanse of sand which used to exist there, some of which survives downstream of the Cob. Malltraeth means "unwholesome strand" and is recorded from at least 1304. The extent of the previous strand or beach is reflected in the names Trefdraeth ("strand farm") and Glantraeth ("strand edge"), north of Malltraeth and now far from the shore.

The village had a Post Office and shop at 16 High Street, but this closed as a victim of Royal Mail making deep cuts in local post offices. A mainline railway runs just a few hundred metres north of the village, but there is no station. The nearest stations are Bodorgan, a request stop, which offers limited local journeys, along with Bangor and Holyhead, which offer more frequent access to longer distance travel to most parts of Wales, England and Scotland.

In 2010 a newly constructed picnic area 'Clwt Glas' overlooking the Cefni Estuary in Malltraeth was opened. 'Clwt Glas' (Green Patch) was an area of land at the lower end of Malltraeth and was essentially the reverse side of a mound built as part of the scheme to reclaim the Cefni Marsh (Cors Ddyga) during the latter years of the 18th Century. It was transformed as a community project with the help of several grants into a picnic area, garden and information point.

Older still is the ancient standing stone found on the northern edge of the village.