Notering byer (12 sted (er)). Velg byen for å se postnummeret (s):
| Tafolwern (1) Tal-y-wern (1) Talerddig (1) Taliesin (1) Tre'r-ddol (1) Trefeglwys (1) | Trefnanney (1) Tregynon (1) Trelystan (1) Trewern (1) Tycrwyn (1) Tyn-y-Cwm (1) |
