CF - Cardiff
The postal area CF (Cardiff) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within CF - Cardiff
| Country | Post Town | Postal District |
| Wales | Cardiff | CF3 CF5 CF10 CF11 CF14 CF15 CF23 CF24 |
| Bridgend | CF31 CF32 CF33 |
|
| Maesteg | CF34 | |
| Bridgend | CF35 | |
| Porthcawl | CF36 | |
| Pontypridd | CF37 CF38 |
|
| Porth | CF39 | |
| Tonypandy | CF40 | |
| Pentre | CF41 | |
| Treorchy | CF42 | |
| Ferndale | CF43 | |
| Aberdare | CF44 | |
| Mountain Ash | CF45 | |
| Treharris | CF46 | |
| Merthyr Tydfil | CF47 CF48 |
|
| Llantwit Major | CF61 | |
| Barry | CF62 CF63 |
|
| Dinas Powys Penarth |
CF64 | |
| Cowbridge | CF71 | |
| Pontyclun | CF72 | |
| Bargoed | CF81 | |
| Hengoed | CF82 | |
| Caerphilly | CF83 |
