| Postcode | LL65 4NN | 
|---|---|
| Post Town | Holyhead | 
| Nearest station | Valley (8 km) | 
| Bus stops | Rhos-ty-mawr (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 12 View | 
| Known addresses | Caer Bryniau, Llanfaethlu | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 53.352291 | |
|---|---|---|
| Longitude | -4.528204 | |
| Easting | 231824 | |
| Northing | 386914 | |
| Grid reference | SH318869 | |
| UTM reference | 30U 398281 5912549 | |
| what3words | wicked.bins.oatmeal | |
| FixPhrase | crowbar lumber snuff turkey | |
| Plus code | 9C5Q9F2C+WP | |
| Altitude | 56 metres (183 feet) | |
| Sunrise (today) | 7:16 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 2.9 KMs (1.8 miles) | 
| Parish | Llanfaethlu | W04000019 | 
|---|---|---|
| Ward | Talybolion | W05001502 | 
| 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 | 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) | 11 | |
|---|---|---|
| Households (2011) | 4 | |
| 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 | |
| Census output area (2021) | W00000112 | |
| Census output area (2011) | 1B1 | |
| Lower layer super output area (2021) | Isle of Anglesey 004A | W01000022 | 
| Lower layer super output area (2011) | Isle of Anglesey 004A | W01000022 | 
| Middle layer super output area (2021) | Llain-goch & Valley | W02000004 | 
| Middle layer super output area (2011) | Llain-goch & Valley | W02000004 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Caer Bryniau, Llanfaethlu | Detached (freehold) | Oct 2010 | £375,000 | 
| Detached (freehold) | Nov 2001 | £35,000 |