LL20 8BX is located in the Llangollen electoral ward, within the unitary authority of Denbighshire and the Welsh Parliamentary constituency of Clwyd South. The Local Health Board is Betsi Cadwaladr University and the police force is North Wales. This postcode has been in use since December 2019.


| Easting | 321377 |
| Northing | 341630 |
| Latitude | 52.966259 |
| Longitude | -3.172071 |
| Country | Wales |
| Postcode District | LL20 |
| Ward | Llangollen |
|---|---|
| Constituency | Clwyd South |
2026 22 MAY £315,000 |
68, MAES HELYG, LLANGOLLEN, LL20 8BX 2026 9 APR £392,000 |
2026 13 FEB £146,250 |
2025 28 FEB £315,000 |
2025 31 JAN £335,100 |
2024 22 NOV £440,000 |
2024 30 AUG £370,000 |
62, MAES HELYG, LLANGOLLEN, LL20 8BX 2024 30 AUG £485,000 |
2024 3 MAY £363,000 |
74, MAES HELYG, LLANGOLLEN, LL20 8BX 2023 28 JUN £360,000 |
| Old Post Office (Berwyn Street) | Llangollen | 334m |
| Glascoed (Bachemill Road) | Fron-bache | 352m |
| Market Street Car Park (Market Street) | Llangollen | 390m |
| Bowling Green (Berwyn Road) | Llangollen | 446m |
| War Memorial (Castle Street) | Llangollen | 454m |
| Llangollen (Llangollen Railway) | Llangollen | 589m |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Llangollen Delivery Office | 17:30 | 12:30 | 321m |
| Chapel Street | 17:15 | 11:30 | 329m |
| Llangollen Post Office | 17:30 | 12:00 | 335m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for LL20 8BX:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL1 | West Wales and The Valleys |
| ITL 3 Code | Name |
| TLL13 | Conwy and Denbighshire |
| LAU 1 Code | Name |
| W06000004 | Denbighshire |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for LL20 8BX:
| Code | Name | |
|---|---|---|
| OA | W00001111 | |
| LSOA | W01000210 | Denbighshire 016E |
| MSOA | W02000057 | Denbighshire 016 |
| LL20 8HG | Castle Buildings | 127m |
| LL20 7BP | 130m | |
| LL20 7BW | 185m | |
| LL20 7BX | Fron Castell | 198m |
| LL20 8HH | Willow Street | 233m |
| LL20 8EJ | Gerddi Y Bache | 233m |
| LL20 8HF | Vicarage Road | 237m |
| LL20 8EQ | Trem Y Creigiau | 238m |
| LL20 8EP | Hall Street | 273m |
| LL20 8NE | Berwyn Street | 301m |