TR3 is in the county of Cornwall. It is 5km north of the town of Penryn, and contains Carnon Downs, Perranwell, Threemilestone, Penpol, and Ponsanooth. TR3 is 7km south-west of the city of Truro. TR3 is a postcode district, also known as an outcode or outbound code.
The below map shows where TR3 is, and the boundary of the TR3 postcode district:
Postal Boundaries © GEOLYTIX copyright and database right 2012
TR3 is in the county of Cornwall.
| Carnon Downs | Village |
| Perranwell | Village |
| Threemilestone | Village |
| Penpol | Village |
| Ponsanooth | Village |
| Feock | Village |
| Stithians | Village |
| Playing Place | Village |
| Perranarworthal | Village |
| Devoran | Village |
| Newbridge | Village |
| Harcourt | Village |
| Penelewey | Village |
| Baldhu | Hamlet |
| Goonpiper | Hamlet |
| Kea | Hamlet |
| Greensplat | Hamlet |
| Carclew | Hamlet |
| Trelissick | Hamlet |
| Calenick | Hamlet |
| Coombe | Hamlet |
| Old Kea | Settlement |
| Ringwell | Village |
| Church Town | Suburb |
| Trewedna Water | Settlement |
| Hendra | Village |
| Tresevern Croft | Hamlet |
Position of TR3 relative to nearby towns. Distance is measured from the centre of TR3 to the centre of the town.
Position of TR3 relative to nearby cities. Distance is measured from the centre of TR3 to the centre of the city.