| Area Code: | IM |
Postcodes were introduced in the Isle of Man in 1993, with the island becoming the IM postcode area. Each town or area is associated with one or more postcode districts, assigned by Isle of Man Post Office. Outside the larger towns, the postcode districts are further broken down and each postal sector is assigned to a number of villages and settlements.
The approximate coverage of the postcode districts (and sectors, where relevant) is as follows. In each case the post town is "ISLE OF MAN". The "coverage" column includes the next digit of the post code (the sector).
| Postcode District | Coverage |
|---|---|
| IM1 | Douglas |
| IM2 | Douglas |
| IM3 | Onchan |
| IM4 | Middle region: 1 Port Soderick and Santon 2 Greeba and Braddan 3 St John's and Foxdale 4 Braddan 5 Onchan 6 Baldrine 7 Laxey and Lonan |
| IM5 | 1 Peel 2 German 3 Patrick |
| IM6 | Kirk Michael |
| IM7 | North region: 1 Maughold 2 Sulby and Lezayre 3 Jurby 4 Andreas and Bride 5 Ballaugh |
| IM8 | Ramsey |
| IM9 | South region: 1 Castletown 2 Ballasalla 3 Malew 4 Arbory 5 Port St Mary 6 Port Erin |
| IM86 | PO boxes and large users |
| IM87 | |
| IM99 |