According to the 2011 UK Census the combined total population of Holyhead Town, London Road, Morawelon, Porthafelin and Parc a'r mynydd was 7,620.[3]
Caergybi was created following the Isle of Anglesey electoral boundary changes in 2012.[2] Prior to this, Holyhead Town, London Road, Morawelon, Porthafelin and Parc a'r mynydd were each county wards and elected their own county councillor.[citation needed]