All postcodes in LD1 9
| Postcode | Place | Type |
|---|---|---|
| LD1 9AQ | Llandrindod Wells | large user |
| LD1 9BL | Llandrindod Wells | large user |
| LD1 9BW | Llandrindod Wells | large user |
| LD1 9DA | Llandrindod Wells | large user |
| LD1 9SA | Llandrindod Wells | large user |
| LD1 9SB | Llandrindod Wells | large user |
| LD1 9XF | Llandrindod Wells | large user |
| LD1 9ZX | Llandrindod Wells | large user |
| LD1 9ZY | Llandrindod Wells | large user |
| LD1 9ZZ | — | large user |