The CT postcode area, also known as the Canterbury postcode area, is a group of 21 postcode districts in England, which are subdivisions of 13 post towns. These postcode districts cover much of East Kent, including Canterbury, Dover, Folkestone, Birchington, Broadstairs, Deal, Herne Bay, Hythe, Margate, Ramsgate, Sandwich, Westgate-on-Sea and Whitstable.