Back Street is a village in Suffolk, England.
It is situated within the CB8 postcode district, which is within the Newmarket post town.
CB8 is the only postcode district within the Newmarket post town.
The Newmarket post town is within the Cambridge postcode area.
Administrative Ward: Wickhambrook
Administrative District: St Edmundsbury
Administrative County: Suffolk
Country: England
UK Parliament: West Suffolk
NHS Local Health Authority: East of England
NHS Region: North, Midlands and the East