Mappleton is a village in East Riding of Yorkshire, England.
It is situated within the HU18 postcode district, which is within the Hornsea post town.
HU18 is the only postcode district within the Hornsea post town.
The Hornsea post town is within the Hull postcode area.
Administrative Ward: North Holderness
Administrative District: East Riding of Yorkshire
Country: England
UK Parliament: Beverley and Holderness
NHS Local Health Authority: Yorkshire and the Humber
NHS Region: North, Midlands and the East