DN
32 districts, 22,307 postcodes
Doncaster, North Lincolnshire, North East Lincolnshire, Bassetlaw, West Lindsey, East Riding of Yorkshire, and others
| District | Postcodes | Local authority |
|---|---|---|
| DN1 | 479 | Doncaster |
| DN10 | 565 | Bassetlaw |
| DN11 | 838 | Doncaster |
| DN12 | 628 | Doncaster |
| DN14 | 1,690 | East Riding of Yorkshire |
| DN15 | 990 | North Lincolnshire |
| DN16 | 749 | North Lincolnshire |
| DN17 | 966 | North Lincolnshire |
| DN18 | 368 | North Lincolnshire |
| DN19 | 239 | North Lincolnshire |
| DN2 | 575 | Doncaster |
| DN20 | 674 | North Lincolnshire |
| DN21 | 1,371 | West Lindsey |
| DN22 | 1,245 | Bassetlaw |
| DN3 | 737 | Doncaster |
| DN31 | 456 | North East Lincolnshire |
| DN32 | 654 | North East Lincolnshire |
| DN33 | 556 | North East Lincolnshire |
| DN34 | 470 | North East Lincolnshire |
| DN35 | 814 | North East Lincolnshire |
| DN36 | 661 | North East Lincolnshire |
| DN37 | 673 | North East Lincolnshire |
| DN38 | 105 | North Lincolnshire |
| DN39 | 114 | North Lincolnshire |
| DN4 | 1,322 | Doncaster |
| DN40 | 453 | North East Lincolnshire |
| DN41 | 245 | North East Lincolnshire |
| DN5 | 972 | Doncaster |
| DN6 | 857 | Doncaster |
| DN7 | 662 | Doncaster |
| DN8 | 493 | Doncaster |
| DN9 | 686 | North Lincolnshire |