DT
11 districts, 7,938 postcodes
Dorset, Somerset, East Devon
| District | Postcodes | Local authority |
|---|
| DT1 | 792 | Dorset |
| DT10 | 478 | Dorset |
| DT11 | 1,088 | Dorset |
| DT2 | 1,140 | Dorset |
| DT3 | 703 | Dorset |
| DT4 | 995 | Dorset |
| DT5 | 315 | Dorset |
| DT6 | 994 | Dorset |
| DT7 | 284 | Dorset |
| DT8 | 234 | Dorset |
| DT9 | 915 | Dorset |