Notering byer (12 sted (er)). Velg byen for å se postnummeret (s):
| Cwmbach (1) Cwmcoy (1) Cwmdu (1) Cwmduad (1) Cwmfelin Boeth (1) Cwmfelin Mynach (1) | Cwmffrwd (1) Cwmgors (1) Cwmisfael (1) Cwmllyfri (1) Cwmsychbant (1) Cwrt-newydd (1) |
