| Postcode | LL57 4DY | 
|---|---|
| Post Town | Bangor | 
| Nearest station | Bangor (Gwynedd) (4 km) | 
| Bus stops | 
                       No nearby bus stops 
                     | 
                  
| Number of UPRNs | 13 View | 
| Known addresses | 
                       1 Pencefn, Pentir 
                            2 Pen Y Cefn, Pentir 
                       | 
                  
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 53.186865 | |
|---|---|---|
| Longitude | -4.136399 | |
| Easting | 257348 | |
| Northing | 367662 | |
| Grid reference | SH573676 | |
| UTM reference | 30U 424066 5893660 | |
| what3words | rehearsal.blunt.foot | |
| FixPhrase | crouch lumping subarctic vitalize | |
| Plus code | 9C5Q5VP7+PC | |
| Altitude | 105 metres (346 feet) | |
| Sunrise (today) | 7:21 | |
| Sunset (today) | 16:41 | |
| Distance away | ||
| Distance to sea | 4.1 KMs (2.5 miles) | 
| Parish | Pentir | W04000095 | 
|---|---|---|
| Ward | Arllechwedd | W05001510 | 
| Unitary Authority | Gwynedd | W06000002 | 
| County | Gwynedd | W11000004 | 
| Constituency (2024) | Bangor Aberconwy | W07000083 | 
| MP | Claire Hughes | Labour | 
| 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) | 15 | |
|---|---|---|
| Households (2011) | 5 | |
| 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 hamlet and isolated dwellings | |
| Census output area (2021) | W00000522 | |
| Census output area (2011) | 1B2 | |
| Lower layer super output area (2021) | Gwynedd 005D | W01000103 | 
| Lower layer super output area (2011) | Gwynedd 005D | W01000103 | 
| Middle layer super output area (2021) | Llanberis & Deiniolen | W02000014 | 
| Middle layer super output area (2011) | Llanberis & Deiniolen | W02000014 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £206,073 | 
|---|---|
| Annual change | 1.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 1 Pencefn, Pentir | Semi-detached (freehold) | Mar 2023 | £182,500 | 
| 2 Pen Y Cefn, Pentir | Semi-detached (freehold) | Aug 2015 | £182,000 |