Tarbrax is a village in South Lanarkshire, Scotland.
It is situated within the EH55 postcode district, which is within the West Calder post town.
EH55 is the only postcode district within the West Calder post town.
The West Calder post town is within the Edinburgh postcode area.
Administrative Ward: Clydesdale North
Administrative District: South Lanarkshire
Country: Scotland
UK Parliament: Lanark and Hamilton East
NHS Local Health Authority: Lanarkshire