Part V
| Carmarthen (county constituency) | (i) The District of Carmarthen; and (ii) the Borough of Dinefwr wards Nos. 1, 7, 8 and 10 to 24. |
| Ceredigion and Pembroke North (county constituency) | (i) The District of Ceredigion; and (ii) the District of Preseli wards Nos. 3, 4, 9 to 14, 18 and 21. |
| Llanelli (county constituency) | (i) The Borough of Dinefwr wards Nos. 2 to 6 and 9; and (ii) the Borough of Llanelli. |
| Pembroke (county constituency) | (i) The District of Preseli wards Nos. 1, 2, 5 to 8, 15 to 17, 19, 20 and 22 to 31; and (ii) the District of South Pembrokeshire. |