| Postcode | LD3 0UR | 
|---|---|
| Post Town | Brecon | 
| Nearest station | Cilmeri (19 km) | 
| Bus stops | Griffin Inn (NW) | 
| Roads in this postcode | |
| Number of UPRNs | 38 View | 
| Known addresses | Greystones, Llyswen Griffin Inn, Llyswen Griffin Lodge, Llyswen Post Office Cottage, Llyswen Star House, Llyswen The Old Presbyterian Chapel, Llyswen The White House, Llyswen Tredegar Cottage, Llyswen Ty Gwyn, Llyswen Wye Cottage, Llyswen Wye Garage, Llyswen Wye Knot Stop, Llyswen Wye View, Llyswen 2 Upper House, Llyswen | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 52.032132 | |
|---|---|---|
| Longitude | -3.264764 | |
| Easting | 313331 | |
| Northing | 237836 | |
| Grid reference | SO133378 | |
| UTM reference | 30U 481836 5764645 | |
| what3words | bands.fired.recording | |
| FixPhrase | crisply lurch silt thus | |
| Plus code | 9C4R2PJP+V3 | |
| Altitude | 101 metres (330 feet) | |
| Sunrise (today) | 7:07 | |
| Sunset (today) | 16:48 | |
| Distance away | ||
| Distance to sea | 57.4 KMs (35.7 miles) | 
| Parish | Bronllys | W04000256 | 
|---|---|---|
| Ward | Bronllys and Felin-fach | W05001122 | 
| Unitary Authority | Powys | W06000023 | 
| County | Powys | W11000006 | 
| Constituency (2024) | Brecon, Radnor and Cwm Tawe | W07000085 | 
| MP | David Chadwick | Liberal Democrat | 
| Police force | Dyfed-Powys | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Mid Wales | |
| NUTS/ITL 2 | Mid and South West 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) | 67 | |
|---|---|---|
| Households (2011) | 23 | |
| 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) | W00002292 | |
| Census output area (2011) | 1B3 | |
| Lower layer super output area (2021) | Powys 015A | W01000430 | 
| Lower layer super output area (2011) | Powys 015A | W01000430 | 
| Middle layer super output area (2021) | Hay-on-Wye & Talgarth | W02000111 | 
| Middle layer super output area (2011) | Hay-on-Wye & Talgarth | W02000111 | 
| Travel to work area | Brecon | W22000023 | 
| Average property price in Llandrindod Wells | £242,033 | 
|---|---|
| Annual change | -0.3% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Wye Knot Stop, Llyswen | Other (freehold) | Oct 2024 | £175,000 | 
| Other (freehold) | Jul 2016 | £249,000 | |
| Detached (freehold) | May 2006 | £246,500 | |
| Griffin Lodge, Llyswen | Detached (freehold) | Dec 2023 | £320,000 | 
| Post Office Cottage, Llyswen | Terraced (freehold) | Nov 2021 | £185,000 | 
| Terraced (freehold) | Oct 2013 | £125,000 | |
| The Old Presbyterian Chapel, Llyswen | Other (freehold) | Feb 2021 | £215,000 | 
| Ty Gwyn, Llyswen | Semi-detached (freehold) | Jan 2021 | £144,000 | 
| Tredegar Cottage, Llyswen | Semi-detached (freehold) | Sep 2020 | £145,000 | 
| Griffin Inn, Llyswen | Other (freehold) | Sep 2018 | £185,000 | 
| Star House, Llyswen | Semi-detached (freehold) | Jan 2018 | £150,000 | 
| Wye Garage, Llyswen | Other (freehold) | Jan 2017 | £558,000 | 
| Greystones, Llyswen | Detached (freehold) | Feb 2014 | £187,500 | 
| Detached (freehold) | Jan 2006 | £201,500 | |
| Detached (freehold) | Apr 2000 | £78,500 | |
| Detached (freehold) | Mar 1997 | £71,000 |