TD
15 districts, 4,540 postcodes
Scottish Borders, Northumberland, East Lothian, Cumberland
| District | Postcodes | Local authority |
|---|---|---|
| TD1 | 639 | Scottish Borders |
| TD10 | 42 | Scottish Borders |
| TD11 | 297 | Scottish Borders |
| TD12 | 237 | Scottish Borders |
| TD13 | 42 | Scottish Borders |
| TD14 | 258 | Scottish Borders |
| TD15 | 563 | Northumberland |
| TD2 | 106 | Scottish Borders |
| TD3 | 46 | Scottish Borders |
| TD4 | 109 | Scottish Borders |
| TD5 | 452 | Scottish Borders |
| TD6 | 423 | Scottish Borders |
| TD7 | 298 | Scottish Borders |
| TD8 | 272 | Scottish Borders |
| TD9 | 756 | Scottish Borders |