Coal Aston is a village in Derbyshire, England.
It is situated within the S18 postcode district, which is within the Dronfield post town.
S18 is the only postcode district within the Dronfield post town.
The Dronfield post town is within the Sheffield postcode area.
Administrative Ward: Coal Aston
Administrative District: North East Derbyshire
Administrative County: Derbyshire
Country: England
UK Parliament: North East Derbyshire
NHS Local Health Authority: East Midlands
NHS Region: North, Midlands and the East