The OX postcode area, also known as the Oxford postcode area, is a group of 26 postcode districts in England, which are subdivisions of 17 post towns. These postcode districts cover most of Oxfordshire, including Oxford, Banbury, Abingdon, Bicester, Witney, Didcot, Carterton, Kidlington, Thame, Wantage, Wallingford, Chipping Norton, Chinnor, Woodstock, Watlington, Bampton and Burford, plus very small parts of Northamptonshire, Buckinghamshire, Berkshire, Gloucestershire and Warwickshire.