The ST postcode area, also known as the Stoke-on-Trent postcode area, is a group of 21 postcode districts in England, which are subdivisions of six post towns. These postcode districts cover much of north and central Staffordshire, including Stoke-on-Trent, Stafford, Leek, Newcastle-under-Lyme, Stone and Uttoxeter, plus very small parts of Cheshire and Derbyshire.