DT - Dorchester
The postal area DT (Dorchester) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within DT - Dorchester
| Country | Post Town | Postal District |
| England | Dorchester | DT1 DT2 |
| Weymouth | DT3 DT4 |
|
| Isle of Portland | DT5 | |
| Bridport | DT6 | |
| Lyme Regis | DT7 | |
| Beaminster | DT8 | |
| Sherborne | DT9 | |
| Sturminster Newton | DT10 | |
| Blandford Forum | DT11 |
