Notering byer (12 sted (er)). Velg byen for å se postnummeret (s):
| Tal-y-bont (1) Tal-y-llyn (1) Talardd (1) Talsarnau (1) Tan-lan (1) Tanygrisiau (1) | Tonfanau (1) Trawsfynydd (1) Ty-mawr (1) Ty-nant (2) Tyn-y-cefn (1) Tywyn (1) |
