| Postcode | LL54 5HY | 
|---|---|
| Post Town | Caernarfon | 
| Nearest station | Abererch (11 km) | 
| Bus stops | Capel Gosen (SW) Ganolfan (W) Capel Gosen (NE) Ganolfan (SE) Maes y Neuadd (SW) Maes y Neuadd (E) | 
| Roads in this postcode | |
| Number of UPRNs | 7 View | 
| Known addresses | Gwynfa, Trefor | 
| Main property type | Terraced | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 52.99514 | |
|---|---|---|
| Longitude | -4.423574 | |
| Easting | 237441 | |
| Northing | 346950 | |
| Grid reference | SH374469 | |
| UTM reference | 30U 404455 5872677 | |
| what3words | sues.loudly.shuffles | |
| FixPhrase | crop luminance surfer tightly | |
| Plus code | 9C4QXHWG+3H | |
| Altitude | 27 metres (90 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:50 | |
| Distance away | ||
| Distance to sea | 0.3 KMs (0.2 miles) | 
| Parish | Trefor a Llanaelhaearn | W04000066 | 
|---|---|---|
| Ward | Yr Eifl | W05001570 | 
| 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) | 14 | |
|---|---|---|
| Households (2011) | 6 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Smaller rural: Further from a major town or city | |
| Rural/urban (2011) | Rural village in a sparse setting | |
| Built up area (2024) | Trefor | W45000781 | 
| Census output area (2021) | W00000401 | |
| Census output area (2011) | 8B1 | |
| Lower layer super output area (2021) | Gwynedd 011C | W01000078 | 
| Lower layer super output area (2011) | Gwynedd 011C | W01000078 | 
| Middle layer super output area (2021) | Cricieth & Llanaelhaearn | W02000020 | 
| Middle layer super output area (2011) | Cricieth & Llanaelhaearn | W02000020 | 
| Travel to work area | Pwllheli and Porthmadog | W22000030 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Gwynfa, Trefor | Terraced (freehold) | Jun 2009 | £88,000 |