| Postcode | LL59 5UF | 
|---|---|
| Post Town | Menai Bridge | 
| Nearest station | Bangor (Gwynedd) (2 km) | 
| Bus stops | Lon Brynteg (SW) Bryn Teg (SW) Plas Rhianfa (NE) Plas Rhianfa (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 19 View | 
| Known addresses | Betula, Caergelach, Llandegfan Carreg Eithin, 12 Caergelach, Llandegfan Corion, Caergelach, Llandegfan Esgair Y Gwynt, 12A Caergelach, Llandegfan Lorien, Caergelach, Llandegfan Ober Mel, 11 Caergelach, Llandegfan Pencilan, 4 Caergelach, Llandegfan Pentir, 16 Caergelach, Llandegfan Y Dalar, Caergelach, Llandegfan 1 Caergelach, Llandegfan 2 Caergelach, Llandegfan 10 Caergelach, Llandegfan | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 53.243823 | |
|---|---|---|
| Longitude | -4.140826 | |
| Easting | 257242 | |
| Northing | 374006 | |
| Grid reference | SH572740 | |
| UTM reference | 30U 423872 5900001 | |
| what3words | improvise.scaffold.fruitcake | |
| FixPhrase | crouton lumping slinging vest | |
| Plus code | 9C5Q6VV5+GM | |
| Altitude | 90 metres (296 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:48 | |
| Distance away | ||
| Distance to sea | 0.4 KMs (0.3 miles) | 
| Parish | Cwm Cadnant | W04000869 | 
|---|---|---|
| Ward | Seiriol | W05001501 | 
| 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) | 39 | |
|---|---|---|
| Households (2011) | 16 | |
| 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 | |
| Built up area (2024) | Llandegfan | W45000685 | 
| Census output area (2021) | W00000058 | |
| Census output area (2011) | 1C3 | |
| Lower layer super output area (2021) | Isle of Anglesey 005B | W01000013 | 
| Lower layer super output area (2011) | Isle of Anglesey 005B | W01000013 | 
| Middle layer super output area (2021) | Beaumaris & Benllech | W02000005 | 
| Middle layer super output area (2011) | Beaumaris & Benllech | W02000005 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Pentir, 16 Caergelach, Llandegfan | Detached (freehold) | Feb 2021 | £420,000 | 
| Detached (freehold) | Aug 2011 | £335,000 | |
| Detached (freehold) | May 2001 | £128,500 | |
| Detached (freehold) | Jan 1996 | £82,500 | |
| Y Dalar, Caergelach, Llandegfan | Detached (freehold) | Jun 2019 | £148,000 | 
| Betula, Caergelach, Llandegfan | Detached (freehold) | Aug 2018 | £220,000 | 
| Detached (freehold) | Feb 2000 | £89,000 | |
| 1 Caergelach, Llandegfan | Detached (freehold) | Jan 2018 | £137,000 | 
| Esgair Y Gwynt, 12A Caergelach, Llandegfan | Detached (freehold) | May 2017 | £330,000 | 
| Detached (freehold) | Aug 2001 | £139,000 | |
| 10 Caergelach, Llandegfan | Detached (freehold) | Nov 2005 | £295,000 | 
| Detached (freehold) | Apr 2002 | £146,000 | |
| Pencilan, 4 Caergelach, Llandegfan | Detached (freehold) | Jul 2004 | £170,000 | 
| 2 Caergelach, Llandegfan | Detached (freehold) | Jun 2004 | £60,000 | 
| Detached (freehold) | Aug 2001 | £55,000 | |
| Ober Mel, 11 Caergelach, Llandegfan | Detached (freehold) | Aug 2003 | £180,000 | 
| Detached (freehold) | Jul 2001 | £130,000 | |
| Lorien, Caergelach, Llandegfan | Detached (freehold) | Feb 1997 | £66,000 |