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Groeslon Post Office - - 1062785.jpg
Groeslon Post Office
Groeslon is located in Gwynedd
Groeslon shown within Gwynedd
Population 1,256 (2011)
OS grid reference SH472558
Principal area
Country Wales
Sovereign state United Kingdom
Postcode district LL54
Dialling code 01286
Police North Wales
Fire North Wales
Ambulance Welsh
EU Parliament Wales
UK Parliament
Welsh Assembly
List of places
GwyneddCoordinates: 53°04′41″N 4°16′48″W / 53.078°N 4.280°W / 53.078; -4.280

Groeslon (Welsh: Y Groeslon, "the crossroads") is a small village in the community of Llandwrog in the Welsh traditional county of Caernarfonshire. Groeslon is administered by Gwynedd Council.

The Flag of Caernarfonshire flying at Inigo Jones Slate Works, Groeslon

The population was 1,256 at the 2011 census

Nearby villages are Penygroes, Carmel and Dinas. The village lies approximately five miles south of Caernarfon. It has one primary school in the centre of the village and no secondary schools. Most secondary school age pupils go to Ysgol Dyffryn Nantlle in Penygroes.

Groeslon was by-passed in 2002 by the A487 road, a trunk road which cost around £12 million to complete. A bat bridge was constructed in 2010 to guide lesser horseshoe bats across the road.

Formerly an agricultural and slate mining village, Groeslon is now expanding as a commuter village for the surrounding towns, especially Caernarfon and Bangor. Its initial growth came as a result of the construction of the LMS railway in 1867. Groeslon railway station closed in December 1964. The railway line is now part of the national cycle route.

In the village there is one pub called the Penionyn.

At the bottom of the village, bordering the A487, a huge wall becomes visible. This is the wall to the Glynllifon estate, formerly the seat of Lord Newborough, which is now a country park and college (Meirion Dwyfor) specialising in land based industries, e.g. agriculture, equine studies and arboriculture.

Groeslon is covered by a Neighbourhood Policing Team based in Penygroes.


An electoral ward in the same name exists. This ward extends beyond the confines of Grosion Community and the total population taken at the 2011 Census was 1,695.[1]

Notable residents[edit]


Hanes Y Groeslon (History of Groeslon) available from public libraries: [1]


  1. ^ "Ward population 2011". Retrieved 15 May 2015. 

External links[edit]