| Reference |
post code |
location 1 |
location 2 |
| LL20 1 | | LLANGOLLEN DELIVERY OFFICE | |
| LL20 2 | | YR OCHR | |
| LL20 41 | | PENGWERN | |
| LL20 109 | | PENTRE LLWYARCH | |
| LL20 117 | | PANDY | |
| LL20 122 | | TREGEIRIOG | |
| LL20 128 | | PENTREDWR | |
| LL20 129 | | COED Y GLYN | |
| LL20 131 | | GARTH | (GLYN) |
| LL20 133 | | VICARAGE | |
| LL20 137 | | GROES LLWYD | |
| LL20 141 | | MAES MAWR | |
| LL20 142 | | SCOTCH HALL | |
| LL20 144 | | PONT DOLYWERN | |
| LL20 145 | | PONTRICKETT | PONTRICKETT FARM |
| LL20 150 | | CWMALIS | |
| LL20 160 | | GARTH ROAD | |
| LL20 161 | | BRYN HOWELL | |
| LL20 162 | | TREVOR POST OFFICE | LLANGOLLEN |
| LL20 163 | | GARTH (ROCKMANS) | |
| LL20 164 | | FRONCYSYLLTE POST OFFICE | |
| LL20 165 | | ARGOED | |
| LL20 166 | | PENTREFELIN | TY DU OR CANAL BRIDGE |
| LL20 167 | | EIRIANFA | |
| LL20 168 | | EGLWYSEG | |
| LL20 170 | | SUN BANK | |
| LL20 171 | | ABBEY ROAD | |
| LL20 172 | | BIRCH HILL | |
| LL20 173 | | CHAPEL STREET | |
| LL20 174 | | CHURCH STREET | |
| LL20 176 | | GLASCOED | |
| LL20 177 | | QUEENS STREET | |
| LL20 178 | | STATION APPROACH | |
| LL20 179 | | TOWER BRIDGE | |
| LL20 183 | | CASTLE STREET | |
| LL20 186 | | MAESYLLYN | |
| LL20 187 | | LLANDYNAN | |
| LL20 189 | | RHEWL | |
| LL20 191 | | LLWYNMAWR | |
| LL20 196 | | PLAS YN VIVOD | |
| LL20 209 | | LLANTYSILIO | |
| LL20 220 | | PENYCLAWDD | |
| LL20 223 | | GELLI | |
| LL20 225 | | LLANARMON DC | |
| LL20 228 | | GLYN CEIRIOG POST OFFICE | |
| LL20 242 | | UPPER GARTH BOX | |
| LL20 246 | | CELYN | |
| LL20 262 | | TYNYGROES | |
| LL20 265 | | TYN TWLL | |
| LL20 270 | | DINBREN ROAD | |
| LL20 273 | | FRON BACHE | |
| LL20 316 | | RHOSYCOED | |
| LL20 330 | | ERWAUS ISAF | |
| LL20 334 | | MAES PENGWERN | |
| LL20 335 | | WERN ROAD | |
| LL20 340 | | TY ISA | |
| LL20 341 | | LLANGOLLEN POST OFFICE | |
| LL20 342 | | HEOL ESGOB | |
| LL20 202 | LL20 7AR | PONTFADOG POST OFFICE | LLANGOLLEN |
| LL20 327 | LL20 7HF | LLYS ABER | NEW ROAD, GLYNCEIRIOG |
| LL20 54 | LL20 7TW | STATION ROAD | LLANGOLLEN |
Map boundaries are based on data from