The approximate coverage of the postcode districts:
| Postcode district | Post town | Coverage | Local authority area |
|---|---|---|---|
| DT1 | DORCHESTER | West Dorset District Council | |
| DT2 | DORCHESTER | West Dorset District Council | |
| DT3 | WEYMOUTH | Weymouth and Portland Borough Council | |
| DT4 | WEYMOUTH | Weymouth and Portland Borough Council | |
| DT5 | PORTLAND | Weymouth and Portland Borough Council | |
| DT6 | BRIDPORT | West Dorset District Council | |
| DT7 | LYME REGIS | West Dorset District Council | |
| DT8 | BEAMINSTER | West Dorset District Council | |
| DT9 | SHERBORNE | West Dorset District Council | |
| DT10 | STURMINSTER NEWTON | North Dorset District Council | |
| DT11 | BLANDFORD FORUM | North Dorset District Council |
Read more about this topic: DT Postcode Area