The approximate coverage of the postcode districts:
| Postcode district | Post town | Coverage | Local authority area |
|---|---|---|---|
| TR1 | TRURO | Truro | Cornwall Council |
| TR2 | TRURO | Truro, Gerrans | Cornwall Council |
| TR3 | TRURO | Truro | Cornwall Council |
| TR4 | TRURO | Goonhavern, Trispen | Cornwall Council |
| TR5 | ST. AGNES | St Agnes, Mithian | Cornwall Council |
| TR6 | PERRANPORTH | Perranporth, Bolingey, Perrancoombe | Cornwall Council |
| TR7 | NEWQUAY | Newquay | Cornwall Council |
| TR8 | NEWQUAY | Mitchell | Cornwall Council |
| TR9 | ST. COLUMB | St Columb Major | Cornwall Council |
| TR10 | PENRYN | Penryn | Cornwall Council |
| TR11 | FALMOUTH | Falmouth, Flushing, Mylor Bridge, Constantine, Mawnan Smith | Cornwall Council |
| TR12 | HELSTON | Helston | Cornwall Council |
| TR13 | HELSTON | Helston | Cornwall Council |
| TR14 | CAMBORNE | Camborne | Cornwall Council |
| TR15 | REDRUTH | Redruth | Cornwall Council |
| TR16 | REDRUTH | Lanner, Carharrack, St Day | Cornwall Council |
| TR17 | MARAZION | Marazion | Cornwall Council |
| TR18 | PENZANCE | Penzance | Cornwall Council |
| TR19 | PENZANCE | St Buryan | Cornwall Council |
| TR20 | PENZANCE | Penzance | Cornwall Council |
| TR21 | ISLES OF SCILLY | St Mary's | Council of the Isles of Scilly |
| TR22 | ISLES OF SCILLY | St Agnes | Council of the Isles of Scilly |
| TR23 | ISLES OF SCILLY | Bryher | Council of the Isles of Scilly |
| TR24 | ISLES OF SCILLY | Tresco | Council of the Isles of Scilly |
| TR25 | ISLES OF SCILLY | St Martin's | Council of the Isles of Scilly |
| TR26 | ST. IVES | St Ives | Cornwall Council |
| TR27 | HAYLE | Hayle | Cornwall Council |
Read more about this topic: TR Postcode Area