The NN postcode area, also known as the Northampton postcode area, is a group of nineteen postcode districts in England, which are subdivisions of eight post towns. These postcode districts cover most of Northamptonshire, including Northampton, Kettering, Wellingborough, Corby, Brackley, Daventry, Rushden and Towcester, plus very small parts of Bedfordshire, Buckinghamshire, Oxfordshire and Warwickshire.