| Postcode | LL57 4EQ | 
|---|---|
| Post Town | Bangor | 
| Nearest station | Bangor (Gwynedd) (6 km) | 
| Bus stops | 
                       No nearby bus stops 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 20 View | 
| Known addresses | 
                       Arfon House, Lon Y Grug, Mynydd Llandygai 
                            Bron Y Foel, Lon Y Grug, Mynydd Llandygai 
                            Bryniau Gwyddelod, Lon Y Grug, Mynydd Llandygai 
                            Fferm Bryniau, Lon Y Grug, Mynydd Llandygai 
                            Ordiwedd, Lon Y Grug, Mynydd Llandygai 
                            Y Garn, Lon Y Grug, Mynydd Llandygai 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
                     
                        No businesses found
                     
                   | 
                
| Latitude | 53.173983 | |
|---|---|---|
| Longitude | -4.095327 | |
| Easting | 260050 | |
| Northing | 366148 | |
| Grid reference | SH600661 | |
| UTM reference | 30U 426789 5892185 | |
| what3words | degrading.cadet.briefer | |
| FixPhrase | crouch lumpish stick tactless | |
| Plus code | 9C5Q5WF3+HV | |
| Altitude | 287 metres (942 feet) | |
| Sunrise (today) | 7:21 | |
| Sunset (today) | 16:41 | |
| Distance away | ||
| Distance to sea | 6.7 KMs (4.2 miles) | 
| Parish | Llandygai | W04000073 | 
|---|---|---|
| Ward | Tre-garth a Mynydd Llandygái | W05001563 | 
| 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) | 17 | |
|---|---|---|
| Households (2011) | 7 | |
| 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) | W00000598 | |
| Census output area (2011) | 1A2 | |
| Lower layer super output area (2021) | Gwynedd 003E | W01000115 | 
| Lower layer super output area (2011) | Gwynedd 003E | W01000115 | 
| Middle layer super output area (2021) | Bethesda | W02000012 | 
| Middle layer super output area (2011) | Bethesda | W02000012 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £206,073 | 
|---|---|
| Annual change | 1.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Bryniau Gwyddelod, Lon Y Grug, Mynydd Llandygai | Other (freehold) | Feb 2023 | £690,000 | 
| Fferm Bryniau, Lon Y Grug, Mynydd Llandygai | Other (freehold) | Feb 2023 | £420,000 | 
| Detached (freehold) | Sep 2008 | £240,000 | |
| Detached (freehold) | Jun 1998 | £250,000 | |
| Arfon House, Lon Y Grug, Mynydd Llandygai | Semi-detached (freehold) | Dec 2020 | £255,000 | 
| Semi-detached (freehold) | Jul 2017 | £220,000 | |
| Y Garn, Lon Y Grug, Mynydd Llandygai | Detached (freehold) | May 2010 | £275,000 | 
| Detached (freehold) | Feb 1996 | £57,450 | |
| Ordiwedd, Lon Y Grug, Mynydd Llandygai | Semi-detached (freehold) | Sep 2006 | £195,000 | 
| Semi-detached (freehold) | May 2001 | £56,000 | |
| Bron Y Foel, Lon Y Grug, Mynydd Llandygai | Detached (freehold) | Nov 2000 | £68,500 |