DN postcode area
The DN area holds 32 districts and 22,343 live postcodes; its largest place is Doncaster.
| District | Live postcodes | Largest place with its centre there |
|---|---|---|
| DN1 | 483 | Doncaster |
| DN2 | 576 | — |
| DN3 | 742 | Kirk Sandall |
| DN4 | 1,329 | — |
| DN5 | 971 | Bentley |
| DN6 | 857 | Adwick le Street |
| DN7 | 662 | Stainforth |
| DN8 | 494 | Thorne |
| DN9 | 687 | Epworth |
| DN10 | 567 | Bawtry |
| DN11 | 843 | Bircotes |
| DN12 | 630 | Conisbrough |
| DN14 | 1,693 | Goole |
| DN15 | 990 | Winterton |
| DN16 | 749 | Scunthorpe |
| DN17 | 965 | Crowle |
| DN18 | 368 | Barton upon Humber |
| DN19 | 240 | Barrow upon Humber |
| DN20 | 674 | Brigg |
| DN21 | 1,371 | Gainsborough |
| DN22 | 1,244 | Retford |
| DN31 | 458 | — |
| DN32 | 654 | Grimsby |
| DN33 | 557 | — |
| DN34 | 470 | — |
| DN35 | 814 | Cleethorpes |
| DN36 | 661 | Humberston |
| DN37 | 674 | Waltham |
| DN38 | 105 | Barnetby le Wold |
| DN39 | 114 | Ulceby |
| DN40 | 456 | Immingham |
| DN41 | 245 | Healing |
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.