| Locality | Post Code |
|---|---|
| Cardinham | PL30 |
| Cardinham (Camborne) | TR14 9LU |
| Cargenwyn | TR14 9PL |
| Cargreen | PL12 |
| Carharrack | TR16 |
| Carkeel | PL12 |
| Carloggas | PL26 8YS |
| Carluddon | PL26 |
| Carlyon Bay | PL25 |
| Carminnow Cross | PL30 4AW, PL31 1HD |
| Carn Brea | TR15, TR16 |
| Carn Brea Village | TR15 |
| Carn Entral | TR14 |
| Carn Grey | PL25 3TB |
| Carnanton | TR8 |
| Carne Cross | PL24 |
| Carnebone | TR13 0EL |
| Carnhell Green | TR14 |
| Carnkie | TR13, TR16 |
| Carnkief | TR4 9NT |
| Carnmenellis | TR16 |
| Carnon Crease | TR3 6LJ |
| Carnon Downs | TR3 |
| Carthew | PL26 |
| Carveor Moor | PL24 2TB |
| Carwynnen | TR14 9LR |