| Postcode | LL55 1LE | 
|---|---|
| Post Town | Caernarfon | 
| Nearest station | Llanfairpwll (9 km) | 
| Bus stops | Yr Hwylfa (NE) Lon Campbell (NE) Waterloo Port (SW) L�n Campbell (SW) Kiltynan (SW) Cae Gwyn (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 23 View | 
| Known addresses | 1 Llys Meirion, Caernarfon 2 Llys Meirion, Caernarfon 4 Llys Meirion, Caernarfon 5 Llys Meirion, Caernarfon 6 Llys Meirion, Caernarfon 7 Llys Meirion, Caernarfon 8 Llys Meirion, Caernarfon 9 Llys Meirion, Caernarfon 11 Llys Meirion, Caernarfon 15 Llys Meirion, Caernarfon 16 Llys Meirion, Caernarfon 18 Llys Meirion, Caernarfon 20 Llys Meirion, Caernarfon 21 Llys Meirion, Caernarfon | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 53.148868 | |
|---|---|---|
| Longitude | -4.265473 | |
| Easting | 248591 | |
| Northing | 363701 | |
| Grid reference | SH485637 | |
| UTM reference | 30U 415367 5889579 | |
| what3words | worth.heavy.paused | |
| FixPhrase | crouch lumpiness smuggling vocally | |
| Plus code | 9C5Q4PXM+GR | |
| Altitude | 30 metres (98 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 0.5 KMs (0.3 miles) | 
| Parish | Caernarfon | W04000056 | 
|---|---|---|
| Ward | Menai | W05001551 | 
| Unitary Authority | Gwynedd | W06000002 | 
| County | Gwynedd | W11000004 | 
| Constituency (2024) | Dwyfor Meirionnydd | W07000096 | 
| MP | Liz Saville Roberts | Plaid Cymru | 
| Police force | North Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Gwynedd | |
| NUTS/ITL 2 | North Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 51 | |
|---|---|---|
| Households (2011) | 21 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Further from a major town or city | |
| Rural/urban (2011) | Rural town and fringe | |
| Built up area (2024) | Caernarfon | W45000738 | 
| Census output area (2021) | W00000480 | |
| Census output area (2011) | 6B2 | |
| Lower layer super output area (2021) | Gwynedd 006B | W01000093 | 
| Lower layer super output area (2011) | Gwynedd 006B | W01000093 | 
| Middle layer super output area (2021) | Caernarfon East | W02000015 | 
| Middle layer super output area (2011) | Caernarfon East | W02000015 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 20 Llys Meirion, Caernarfon | Semi-detached (freehold) | Oct 2023 | £340,000 | 
| Semi-detached (freehold) | Oct 2004 | £206,500 | |
| 7 Llys Meirion, Caernarfon | Semi-detached (freehold) | May 2021 | £292,500 | 
| Semi-detached (freehold) | Jul 1998 | £76,000 | |
| 9 Llys Meirion, Caernarfon | Semi-detached (freehold) | Sep 2019 | £266,266 | 
| Semi-detached (freehold) | Oct 1997 | £83,950 | |
| 4 Llys Meirion, Caernarfon | Semi-detached (freehold) | Feb 2019 | £252,950 | 
| 8 Llys Meirion, Caernarfon | Semi-detached (freehold) | Feb 2018 | £220,000 | 
| 18 Llys Meirion, Caernarfon | Semi-detached (freehold) | Jan 2018 | £207,500 | 
| Semi-detached (freehold) | Aug 2005 | £200,000 | |
| 11 Llys Meirion, Caernarfon | Semi-detached (freehold) | Jul 2017 | £225,000 | 
| 16 Llys Meirion, Caernarfon | Semi-detached (freehold) | Feb 2012 | £226,000 | 
| Semi-detached (freehold) | Sep 2002 | £120,000 | |
| 6 Llys Meirion, Caernarfon | Semi-detached (freehold) | Jan 2010 | £250,000 | 
| Semi-detached (freehold) | Oct 2005 | £220,000 | |
| 1 Llys Meirion, Caernarfon | Semi-detached (freehold) | May 2009 | £249,995 | 
| Semi-detached (freehold) | May 2006 | £220,000 | |
| Semi-detached (freehold) | Nov 1998 | £80,500 | |
| Semi-detached (freehold) | Nov 1996 | £72,500 |