| Postcode | LL77 7LY | 
|---|---|
| Post Town | Rhosneigr, Llangefni | 
| Nearest station | Bodorgan (7 km) | 
| Bus stops | Capel Cana (SW) Cwm Cwmwd (E) Cefn Cwmwd (W) Gorwel Deg (NE) Gorwel Deg (SW) Penrhiw (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 9 View | 
| Known addresses | 1 Stad Ty Gwyn, Rhostrehwfa 2 Stad Ty Gwyn, Rhostrehwfa 3 Stad Ty Gwyn, Rhostrehwfa 5 Stad Ty Gwyn, Rhostrehwfa 6 Stad Ty Gwyn, Rhostrehwfa | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 53.244336 | |
|---|---|---|
| Longitude | -4.343838 | |
| Easting | 243699 | |
| Northing | 374488 | |
| Grid reference | SH436744 | |
| UTM reference | 30U 410326 5900294 | |
| what3words | installs.sandbags.represent | |
| FixPhrase | crouton luminous sloppily unadvised | |
| Plus code | 9C5Q6MV4+PF | |
| Altitude | 79 metres (260 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 6.5 KMs (4 miles) | 
| Parish | Llangristiolus | W04000026 | 
|---|---|---|
| Ward | Cefni | W05001497 | 
| Unitary Authority | Isle of Anglesey | W06000001 | 
| County | Gwynedd | W11000004 | 
| Constituency (2024) | Ynys Môn | W07000112 | 
| MP | Llinos Medi | Plaid Cymru | 
| Police force | North Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Isle of Anglesey | |
| NUTS/ITL 2 | North Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | April 1986 | 
|---|---|
| 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) | 9 | |
|---|---|---|
| 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 village in a sparse setting | |
| Built up area (2024) | Rhostrehwfa | W45000683 | 
| Census output area (2021) | W00000026 | |
| Census output area (2011) | 1B1 | |
| Lower layer super output area (2021) | Isle of Anglesey 006A | W01000006 | 
| Lower layer super output area (2011) | Isle of Anglesey 006A | W01000006 | 
| Middle layer super output area (2021) | Llangefni | W02000006 | 
| Middle layer super output area (2011) | Llangefni | W02000006 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 2 Stad Ty Gwyn, Rhostrehwfa | Detached (freehold) | Oct 2016 | £153,000 | 
| 1 Stad Ty Gwyn, Rhostrehwfa | Detached (freehold) | Oct 2014 | £133,000 | 
| 6 Stad Ty Gwyn, Rhostrehwfa | Detached (freehold) | Oct 2008 | £135,000 | 
| 5 Stad Ty Gwyn, Rhostrehwfa | Detached (freehold) | Jul 2004 | £172,500 | 
| 3 Stad Ty Gwyn, Rhostrehwfa | Detached (freehold) | Jul 1995 | £32,000 |