Anglesey postcode 'most desirable' in Wales
25 August 2014 Last updated at 12:28 BST
The Royal Mail has published a list of the most sought after postcode areas based on things like job prospects, crime rates and health.
The list has been complied to mark the 40th anniversary of the allocation of postcodes to every address in Britain.
LL78 - which centres on Brynteg on Anglesey - is believed to be the most desirable postcode in Wales. Local estate agents say the location is rural but also close to the beach and to the busier centre of Llangefni.
Chris Dearden asked locals whether they were surprised.