| Postcode | LL56 4QU | 
|---|---|
| Post Town | Y Felinheli | 
| Nearest station | Llanfairpwll (5 km) | 
| Bus stops | Rhosywylfa (SE) Llys Gwynt (NE) Llys Gwynt (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 5 View | 
| Known addresses | Rhos Y Wylfa, Nant Y Garth, Y Felinheli | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 53.185588 | |
|---|---|---|
| Longitude | -4.170776 | |
| Easting | 255047 | |
| Northing | 367589 | |
| Grid reference | SH550675 | |
| UTM reference | 30U 421767 5893555 | |
| what3words | enlighten.succeed.strutting | |
| FixPhrase | crouch lumping stung unsteady | |
| Plus code | 9C5Q5RPH+6M | |
| Altitude | 105 metres (344 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:48 | |
| Distance away | ||
| Distance to sea | 2.8 KMs (1.7 miles) | 
| Parish | Llanddeiniolen | W04000070 | 
|---|---|---|
| Ward | Bethel a'r Felinheli | W05001512 | 
| 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 | August 1993 | 
|---|---|
| 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) | 2 | |
|---|---|---|
| Households (2011) | 1 | |
| 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) | W00000269 | |
| Census output area (2011) | 1A3 | |
| Lower layer super output area (2021) | Gwynedd 004B | W01000053 | 
| Lower layer super output area (2011) | Gwynedd 004B | W01000053 | 
| Middle layer super output area (2021) | Bethel & Llanrug | W02000013 | 
| Middle layer super output area (2011) | Bethel & Llanrug | W02000013 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Rhos Y Wylfa, Nant Y Garth, Y Felinheli | Detached (freehold) | Aug 2005 | £273,000 | 
| Detached (freehold) | Dec 1996 | £85,000 | |
| Detached (freehold) | Dec 1995 | £75,500 |