Sectors in TR3
| Sector | Main place | Postcodes |
|---|---|---|
| TR3 6 | Threemilestone | 263 |
| TR3 7 | Perranwell | 226 |
Places covered by TR3
- Threemilestone Cornwall · 56
- Carnon Downs Cornwall · 51
- Perranwell Cornwall · 42
- Ponsanooth Cornwall · 36
- Stithians Cornwall · 33
- Devoran Cornwall · 23
- Playing Place Cornwall · 17
- Trolver Croft Cornwall · 17
- Perranarworthal Cornwall · 16
- Feock Cornwall · 13
- Hendra Cornwall · 9
- Penelewey Cornwall · 5
- Truro Cornwall · 4
- Newbridge Cornwall · 3
- Calenick Cornwall · 2
- Greensplat Cornwall · 2
- Harcourt Cornwall · 2
- Ringwell Cornwall · 2
- Trelissick Cornwall · 2
- Tresevern Croft Cornwall · 2
- Baldhu Cornwall · 1
- Carclew Cornwall · 1
- Coombe Cornwall · 1
- Goonpiper Cornwall · 1
- Kea Cornwall · 1
- Old Kea Cornwall · 1
- Trewedna Water Cornwall · 1