| District | Post Town | Coverage | Postcodes |
|---|---|---|---|
| TR1 | Truro | Truro | 922 |
| TR2 | Truro | Truro, Gerrans | 534 |
| TR3 | Truro | Truro | 487 |
| TR4 | Truro | Goonhavern, Trispen | 518 |
| TR5 | St. Agnes | St Agnes, Mithian | 181 |
| TR6 | Perranporth | Perranporth, Bolingey, Perrancoombe | 154 |
| TR7 | Newquay | Newquay | 674 |
| TR8 | Newquay | Mitchell | 570 |
| TR9 | St. Columb | Saint Columb | 282 |
| TR10 | Penryn | Penryn | 378 |
| TR11 | Falmouth | Falmouth, Flushing, Mylor Bridge, Constantine, Mawnan Smith | 1,027 |
| TR12 | Helston | Helston | 434 |
| TR13 | Helston | Helston | 774 |
| TR14 | Camborne | Camborne | 849 |
| TR15 | Redruth | Redruth | 723 |
| TR16 | Redruth | Lanner, Carharrack, St Day | 664 |
| TR17 | Marazion | Marazion | 93 |
| TR18 | Penzance | Penzance | 862 |
| TR19 | Penzance | St Buryan | 515 |
| TR20 | Penzance | Penzance | 512 |
| TR21 | Isles of Scilly | St Mary's | 73 |
| TR22 | Isles of Scilly | St Agnes | 1 |
| TR23 | Isles of Scilly | Bryher | 1 |
| TR24 | Isles of Scilly | Tresco | 18 |
| TR25 | Isles of Scilly | St Martin's | 3 |
| TR26 | St. Ives | Saint Ives | 648 |
| TR27 | Hayle | Hayle | 551 |