Astmoor is a village in Cheshire, England.
It is situated within the WA7 postcode district, which is within the Runcorn post town.
WA7 is the only postcode district within the Runcorn post town.
The Runcorn post town is within the Warrington postcode area.
Administrative Ward: Halton Castle
Administrative District: Halton
Country: England
UK Parliament: Halton
NHS Local Health Authority: North West
NHS Region: North, Midlands and the East