Houlsyke is a village in North Yorkshire, England.
It is situated within the YO21 postcode district, which is within the Whitby post town.
The full list of postcode districts within the Whitby post town is as follows:
The Whitby post town is within the York postcode area.
Administrative Ward: Danby
Administrative District: Scarborough
Administrative County: North Yorkshire
Country: England
UK Parliament: Scarborough and Whitby
NHS Local Health Authority: Yorkshire and the Humber
NHS Region: North, Midlands and the East