Middleton-on-Leven is a village in North Yorkshire, England.
It is situated within the TS15 postcode district, which is within the Yarm post town.
TS15 is the only postcode district within the Yarm post town.
The Yarm post town is within the Cleveland postcode area.
Administrative Ward: Rudby
Administrative District: Hambleton
Administrative County: North Yorkshire
Country: England
UK Parliament: Richmond (Yorks)
NHS Local Health Authority: Yorkshire and the Humber
NHS Region: North, Midlands and the East