| Postcode | LD3 9PR | 
|---|---|
| Post Town | Brecon | 
| Nearest station | Llangammarch (17 km) | 
| Bus stops | No nearby bus stops | 
| Number of UPRNs | 28 View | 
| Known addresses | Aethnen, Sarnau Gernant, Sarnau Gwarallt, Sarnau Lonyderri, Sarnau Moelfre, Sarnau Nant Yr Onnen, Sarnau Pant-Y-Groes, Sarnau Tara, Sarnau Twynmoel Barn, Sarnau Upper Penrhiwgoch, Sarnau | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.985548 | |
|---|---|---|
| Longitude | -3.414202 | |
| Easting | 302979 | |
| Northing | 232844 | |
| Grid reference | SO029328 | |
| UTM reference | 30U 471555 5759511 | |
| what3words | withdrew.sounding.operation | |
| FixPhrase | crisping lunchtime sturdily unknown | |
| Plus code | 9C3RXHPP+68 | |
| Altitude | 237 metres (777 feet) | |
| Sunrise (today) | 7:07 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 49 KMs (30.4 miles) | 
| Parish | Honddu Isaf | W04000282 | 
|---|---|---|
| Ward | Yscir with Honddu Isaf and Llanddew | W05001176 | 
| 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) | 50 | |
|---|---|---|
| Households (2011) | 18 | |
| 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 in a sparse setting | |
| Census output area (2021) | W00002346 | |
| Census output area (2011) | 1A1 | |
| Lower layer super output area (2021) | Powys 020A | W01000440 | 
| Lower layer super output area (2011) | Powys 020A | W01000440 | 
| Middle layer super output area (2021) | Sennybridge & Talybont-on-Usk | W02000414 | 
| Middle layer super output area (2011) | Sennybridge & Talybont-on-Usk | W02000414 | 
| Travel to work area | Brecon | W22000023 | 
| Average property price in Llandrindod Wells | £242,033 | 
|---|---|
| Annual change | -0.3% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Pant-Y-Groes, Sarnau | Detached (freehold) | Dec 2024 | £200,000 | 
| Detached (freehold) | Aug 1996 | £155,000 | |
| Gwarallt, Sarnau | Detached (freehold) | Mar 2022 | £450,000 | 
| Nant Yr Onnen, Sarnau | Detached (freehold) | Nov 2020 | £379,000 | 
| Gernant, Sarnau | Detached (freehold) | Jul 2018 | £218,000 | 
| Detached (freehold) | Jun 2005 | £250,000 | |
| Tara, Sarnau | Detached (freehold) | Sep 2016 | £330,000 | 
| Aethnen, Sarnau | Other (freehold) | Sep 2016 | £39,999 | 
| Lonyderri, Sarnau | Semi-detached (freehold) | Jun 2009 | £151,250 | 
| Moelfre, Sarnau | Detached (freehold) | Apr 2009 | £296,500 | 
| Detached (freehold) | Oct 2005 | £357,000 | |
| Detached (freehold) | Aug 1995 | £30,000 | |
| Twynmoel Barn, Sarnau | Detached (freehold) | Apr 2009 | £512,500 | 
| Upper Penrhiwgoch, Sarnau | Detached (freehold) | Dec 2001 | £185,000 |