| Postcode | SA62 5AY | 
|---|---|
| Post Town | Haverfordwest | 
| Nearest station | Fishguard and Goodwick (12 km) | 
| Bus stops | Trefin Square (W) | 
| Roads in this postcode | |
| Number of UPRNs | 21 View | 
| Known addresses | 5 Bryn Y Derwydd, Trefin 7 Bryn Y Derwydd, Trefin 22 Bryn Y Derwydd, Trefin | 
| Main property type | Semi-detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.949385 | |
|---|---|---|
| Longitude | -5.148103 | |
| Easting | 183754 | |
| Northing | 232560 | |
| Grid reference | SM837325 | |
| UTM reference | 30U 352373 5757588 | |
| what3words | beakers.geese.fearfully | |
| FixPhrase | crisping luckless sneeze uncouple | |
| Plus code | 9C3PWVX2+QQ | |
| Altitude | 55 metres (179 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:56 | |
| Distance away | ||
| Distance to sea | 1.1 KMs (0.7 miles) | 
| Parish | Llanrhian | W04000947 | |
|---|---|---|---|
| Ward | Llanrhian | W05001457 | |
| Unitary Authority | Pembrokeshire | W06000009 | |
| County | Dyfed | W11000002 | |
| Constituency (2024) | Ceredigion Preseli | W07000093 | |
| MP | Ben Lake | Plaid Cymru | |
| Police force | Dyfed-Powys | ||
| Water company | Dwr Cymru Welsh Water | ||
| National park | Pembrokeshire Coast National Park | W18000002 | |
| 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) | 45 | |
|---|---|---|
| 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 village in a sparse setting | |
| Census output area (2021) | W00003110 | |
| Census output area (2011) | 1B3 | |
| Lower layer super output area (2021) | Pembrokeshire 003B | W01000581 | 
| Lower layer super output area (2011) | Pembrokeshire 003B | W01000581 | 
| Middle layer super output area (2021) | St Davids & Letterston | W02000128 | 
| Middle layer super output area (2011) | St Davids & Letterston | W02000128 | 
| Travel to work area | Haverfordwest and Milford Haven | W22000009 | 
| Average property price in Swansea | £199,131 | 
|---|---|
| Annual change | 2.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 7 Bryn Y Derwydd, Trefin | Semi-detached (freehold) | Jan 2011 | £105,000 | 
| Semi-detached (freehold) | Dec 2007 | £149,950 | |
| Semi-detached (freehold) | Mar 2005 | £106,000 | |
| 22 Bryn Y Derwydd, Trefin | Semi-detached (freehold) | Sep 2010 | £123,250 | 
| Semi-detached (freehold) | Oct 2008 | £120,000 | |
| Semi-detached (freehold) | Jan 2002 | £54,000 | |
| 5 Bryn Y Derwydd, Trefin | Semi-detached (freehold) | Oct 2001 | £44,500 |