The population was 880 at the 2011 census[1] Nearby villages are Penygroes, Carmel and Dinas.

Most secondary school age pupils go to Ysgol Dyffryn Nantlle in Penygroes.

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.

This ward extends beyond the confines of Groeslon village, and the total population taken at the 2011 Census was 1,695.