The DE postcode area, also known as the Derby postcode area,[2] is a group of 23 postcode districts in central England, within 11 post towns.
These cover south and central Derbyshire (including Derby, Alfreton, Ashbourne, Bakewell, Belper, Heanor, Ilkeston, Matlock, Ripley and Swadlincote), parts of east Staffordshire (including Burton upon Trent) and north-west Leicestershire, and very small parts of Nottinghamshire.
The approximate coverage of the postcode districts: Until approximately 1992, most of the districts were different: