| Postcode | SA31 1SL | 
|---|---|
| Post Town | Carmarthen | 
| Nearest station | Carmarthen (1 km) | 
| Bus stops | Green Hall House (SE) Heol Rudd (NE) Coronation Road (NE) Coronation Road (SW) Russell Terrace (SW) Limegrove Avenue (NW) | 
| Roads in this postcode | |
| Number of UPRNs | 42 View | 
| Known addresses | The Laurels, Lon Hir, Carmarthen 1 Lon Hir, Carmarthen 3 Lon Hir, Carmarthen 5 Lon Hir, Carmarthen 7 Lon Hir, Carmarthen 8 Lon Hir, Carmarthen 10 Lon Hir, Carmarthen 11 Lon Hir, Carmarthen 12 Lon Hir, Carmarthen 13 Lon Hir, Carmarthen 14 Lon Hir, Carmarthen 15 Lon Hir, Carmarthen 18 Lon Hir, Carmarthen 19 Lon Hir, Carmarthen 20 Lon Hir, Carmarthen 21 Lon Hir, Carmarthen 23 Lon Hir, Carmarthen 24 Lon Hir, Carmarthen 26 Lon Hir, Carmarthen 27 Lon Hir, Carmarthen 29 Lon Hir, Carmarthen 35 Lon Hir, Carmarthen 36 Lon Hir, Carmarthen 38 Lon Hir, Carmarthen | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.861786 | |
|---|---|---|
| Longitude | -4.316931 | |
| Easting | 240554 | |
| Northing | 220672 | |
| Grid reference | SN405206 | |
| UTM reference | 30U 409315 5746485 | |
| what3words | debate.things.phones | |
| FixPhrase | crisped luminous sprawl vacation | |
| Plus code | 9C3QVM6M+P6 | |
| Altitude | 50 metres (164 feet) | |
| Sunrise (today) | 7:11 | |
| Sunset (today) | 16:53 | |
| Distance away | ||
| Distance to sea | 5.1 KMs (3.1 miles) | 
| Parish | Carmarthen | W04000494 | 
|---|---|---|
| Ward | Carmarthen Town North and South | W05001183 | 
| Unitary Authority | Carmarthenshire | W06000010 | 
| County | Dyfed | W11000002 | 
| Constituency (2024) | Caerfyrddin | W07000087 | 
| MP | Ms Ann Davies | Plaid Cymru | 
| Police force | Dyfed-Powys | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | South West 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) | 105 | |
|---|---|---|
| Households (2011) | 36 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Further from a major town or city | |
| Rural/urban (2011) | Urban city and town in a sparse setting | |
| Built up area (2024) | Carmarthen | W45000937 | 
| Census output area (2021) | W00003435 | |
| Census output area (2011) | 5B3 | |
| Lower layer super output area (2021) | Carmarthenshire 007A | W01000637 | 
| Lower layer super output area (2011) | Carmarthenshire 007A | W01000637 | 
| Middle layer super output area (2021) | Carmarthen North | W02000148 | 
| Middle layer super output area (2011) | Carmarthen North | W02000148 | 
| Travel to work area | Llanelli | W22000028 | 
| Average property price in Swansea | £199,131 | 
|---|---|
| Annual change | 2.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 1 Lon Hir, Carmarthen | Semi-detached (freehold) | Jul 2024 | £132,000 | 
| Semi-detached (freehold) | Sep 2013 | £107,000 | |
| 11 Lon Hir, Carmarthen | Semi-detached (freehold) | Dec 2023 | £160,000 | 
| 20 Lon Hir, Carmarthen | Detached (freehold) | May 2022 | £225,600 | 
| 8 Lon Hir, Carmarthen | Detached (freehold) | Feb 2022 | £286,100 | 
| Detached (freehold) | Jun 2001 | £80,000 | |
| 10 Lon Hir, Carmarthen | Detached (freehold) | Jul 2021 | £325,000 | 
| Detached (freehold) | Dec 2017 | £195,000 | |
| Detached (freehold) | Jun 2004 | £175,000 | |
| 14 Lon Hir, Carmarthen | Detached (freehold) | Jun 2021 | £290,750 | 
| Detached (freehold) | Sep 2009 | £230,000 | |
| Detached (freehold) | Sep 2006 | £230,000 | |
| Detached (freehold) | Feb 1999 | £87,000 | |
| 23 Lon Hir, Carmarthen | Semi-detached (freehold) | Apr 2021 | £218,500 | 
| Semi-detached (freehold) | Feb 2016 | £158,000 | |
| The Laurels, Lon Hir, Carmarthen | Detached (freehold) | Nov 2020 | £250,000 | 
| Detached (freehold) | Aug 2017 | £192,500 | |
| 5 Lon Hir, Carmarthen | Semi-detached (freehold) | Mar 2018 | £140,000 | 
| Semi-detached (freehold) | Jan 2015 | £152,000 | |
| Semi-detached (freehold) | Dec 2007 | £152,500 | |
| Semi-detached (freehold) | Apr 2006 | £120,000 | |
| 15 Lon Hir, Carmarthen | Semi-detached (freehold) | Dec 2017 | £135,000 |