Grayingham is a village in Lincolnshire, England.
It is situated within the DN21 postcode district, which is within the Gainsborough post town.
DN21 is the only postcode district within the Gainsborough post town.
The Gainsborough post town is within the Doncaster postcode area.
Administrative Ward: Hemswell
Administrative District: West Lindsey
Administrative County: Lincolnshire
Country: England
UK Parliament: Gainsborough
NHS Local Health Authority: East Midlands
NHS Region: North, Midlands and the East