Knockin is a village in Shropshire, England.
It is situated within the SY10 postcode district, which is within the Oswestry post town.
The full list of postcode districts within the Oswestry post town is as follows:
The Oswestry post town is within the Shrewsbury postcode area.
Administrative Ward: Llanymynech
Administrative District: Shropshire
Country: England
UK Parliament: North Shropshire
NHS Local Health Authority: West Midlands
NHS Region: North, Midlands and the East