Seathwaite is a village in Cumbria, England.
It is situated within the LA20 postcode district, which is within the Broughton-in-Furness post town.
LA20 is the only postcode district within the Broughton-in-Furness post town.
The Broughton-in-Furness post town is within the Lancaster postcode area.
Administrative Ward: Broughton
Administrative District: South Lakeland
Administrative County: Cumbria
Country: England
UK Parliament: Barrow and Furness
NHS Local Health Authority: North West
NHS Region: North, Midlands and the East