Roundthwaite is a village in Cumbria, England.
It is situated within the CA10 postcode district, which is within the Penrith post town.
The full list of postcode districts within the Penrith post town is as follows:
The Penrith post town is within the Carlisle postcode area.
Administrative Ward: Orton with Tebay
Administrative District: Eden
Administrative County: Cumbria
Country: England
UK Parliament: Penrith and The Border
NHS Local Health Authority: North West
NHS Region: North, Midlands and the East