DE postcode area
The DE area holds 24 districts and 17,984 live postcodes; its largest place is Derby.
| District | Live postcodes | Largest place with its centre there |
|---|---|---|
| DE1 | 706 | Derby |
| DE3 | 463 | — |
| DE4 | 1,023 | Matlock |
| DE5 | 537 | Ripley |
| DE6 | 792 | Ashbourne |
| DE7 | 1,147 | Ilkeston |
| DE11 | 1,083 | Swadlincote |
| DE12 | 568 | Measham |
| DE13 | 991 | Barton under Needwood |
| DE14 | 797 | Burton upon Trent |
| DE15 | 547 | Newton Solney |
| DE21 | 1,261 | Oakwood |
| DE22 | 1,087 | Quarndon |
| DE23 | 1,089 | — |
| DE24 | 1,191 | Sinfin |
| DE45 | 313 | Bakewell |
| DE55 | 1,243 | Alfreton |
| DE56 | 915 | Belper |
| DE65 | 555 | Repton |
| DE72 | 452 | Borrowash |
| DE73 | 536 | Melbourne |
| DE74 | 341 | Castle Donington |
| DE75 | 346 | Heanor |
| DE99 | 1 | — |
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.