NR
36 districts, 24,271 postcodes
North Norfolk, Broadland, South Norfolk, Norwich, East Suffolk, Great Yarmouth, and others
| District | Postcodes | Local authority |
|---|---|---|
| NR1 | 883 | Norwich |
| NR10 | 735 | Broadland |
| NR11 | 771 | North Norfolk |
| NR12 | 921 | North Norfolk |
| NR13 | 1,111 | Broadland |
| NR14 | 937 | South Norfolk |
| NR15 | 603 | South Norfolk |
| NR16 | 503 | Breckland |
| NR17 | 591 | Breckland |
| NR18 | 710 | South Norfolk |
| NR19 | 665 | Breckland |
| NR2 | 728 | Norwich |
| NR20 | 865 | Breckland |
| NR21 | 810 | North Norfolk |
| NR22 | 68 | North Norfolk |
| NR23 | 232 | North Norfolk |
| NR24 | 210 | North Norfolk |
| NR25 | 543 | North Norfolk |
| NR26 | 296 | North Norfolk |
| NR27 | 399 | North Norfolk |
| NR28 | 603 | North Norfolk |
| NR29 | 742 | Great Yarmouth |
| NR3 | 817 | Norwich |
| NR30 | 973 | Great Yarmouth |
| NR31 | 1,193 | Great Yarmouth |
| NR32 | 1,107 | East Suffolk |
| NR33 | 930 | East Suffolk |
| NR34 | 853 | East Suffolk |
| NR35 | 454 | South Norfolk |
| NR4 | 568 | Norwich |
| NR5 | 633 | Norwich |
| NR6 | 641 | Broadland |
| NR7 | 956 | Broadland |
| NR8 | 486 | Broadland |
| NR9 | 727 | South Norfolk |
| NR99 | 7 | Norwich |