| Postcode | CF83 8HN | 
|---|---|
| Post Town | Caerphilly | 
| Nearest station | Energlyn and Churchill Park (3 km) | 
| Bus stops | The Square (W) Navigation Street (SE) Redbrook Avenue (W) Navigation Street (NW) Redbrook Avenue (E) Ty yn y Pwll (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 56 View | 
| Known addresses | 2 Mary Street, Trethomas 6 Mary Street, Trethomas 7 Mary Street, Trethomas 8 Mary Street, Trethomas 9 Mary Street, Trethomas 10 Mary Street, Trethomas 11 Mary Street, Trethomas 14 Mary Street, Trethomas 15 Mary Street, Trethomas 16 Mary Street, Trethomas 17 Mary Street, Trethomas 18 Mary Street, Trethomas 19 Mary Street, Trethomas 20 Mary Street, Trethomas 21 Mary Street, Trethomas 22 Mary Street, Trethomas 23 Mary Street, Trethomas 24 Mary Street, Trethomas 25 Mary Street, Trethomas 28 Mary Street, Trethomas 29 Mary Street, Trethomas 30 Mary Street, Trethomas 31 Mary Street, Trethomas 32 Mary Street, Trethomas 33 Mary Street, Trethomas 35 Mary Street, Trethomas 37 Mary Street, Trethomas 39 Mary Street, Trethomas 40 Mary Street, Trethomas 41 Mary Street, Trethomas 42 Mary Street, Trethomas 43 Mary Street, Trethomas 44 Mary Street, Trethomas 46 Mary Street, Trethomas 47 Mary Street, Trethomas 48 Mary Street, Trethomas 49 Mary Street, Trethomas 50 Mary Street, Trethomas | 
| Main property type | Terraced | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.592624 | |
|---|---|---|
| Longitude | -3.181852 | |
| Easting | 318226 | |
| Northing | 188859 | |
| Grid reference | ST182888 | |
| UTM reference | 30U 487402 5715745 | |
| what3words | regretted.squeaks.snippet | |
| FixPhrase | cringing lure suggest unsnap | |
| Plus code | 9C3RHRV9+27 | |
| Altitude | 66 metres (218 feet) | |
| Sunrise (today) | 7:05 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 12.2 KMs (7.6 miles) | 
| Parish | Bedwas, Trethomas and Machen | W04000729 | 
|---|---|---|
| Ward | Bedwas and Trethomas | W05001652 | 
| Unitary Authority | Caerphilly | W06000018 | 
| County | Gwent | W11000003 | 
| Constituency (2024) | Caerphilly | W07000088 | 
| MP | Chris Evans | Labour | 
| Police force | Gwent | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Gwent Valleys | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | June 1999 | 
|---|---|
| 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) | 136 | |
|---|---|---|
| Households (2011) | 50 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Bedwas | W45001162 | 
| Census output area (2021) | W00007053 | |
| Census output area (2011) | 5A3 | |
| Lower layer super output area (2021) | Caerphilly 020D | W01001346 | 
| Lower layer super output area (2011) | Caerphilly 020D | W01001346 | 
| Middle layer super output area (2021) | Bedwas & Trethomas | W02000309 | 
| Middle layer super output area (2011) | Bedwas & Trethomas | W02000309 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 47 Mary Street, Trethomas | Terraced (freehold) | Apr 2025 | £141,000 | 
| 20 Mary Street, Trethomas | Terraced (freehold) | Sep 2024 | £163,500 | 
| Terraced (freehold) | Aug 2021 | £125,000 | |
| 30 Mary Street, Trethomas | Terraced (freehold) | Mar 2024 | £180,000 | 
| Terraced (freehold) | Dec 2014 | £82,500 | |
| 16 Mary Street, Trethomas | Terraced (freehold) | Feb 2024 | £145,000 | 
| Terraced (freehold) | Jan 2003 | £63,500 | |
| Terraced (freehold) | May 2000 | £45,000 | |
| Terraced (freehold) | Sep 1995 | £40,000 | |
| Terraced (freehold) | Jan 1995 | £18,000 | |
| 6 Mary Street, Trethomas | Terraced (freehold) | Feb 2024 | £150,000 | 
| Terraced (freehold) | Dec 2018 | £110,000 | |
| 41 Mary Street, Trethomas | Terraced (freehold) | Sep 2023 | £150,000 | 
| Terraced (freehold) | Feb 2017 | £100,000 | |
| 33 Mary Street, Trethomas | Terraced (freehold) | Sep 2023 | £140,000 | 
| 19 Mary Street, Trethomas | Terraced (freehold) | Aug 2023 | £187,500 | 
| Terraced (freehold) | Oct 2022 | £136,000 | |
| 39 Mary Street, Trethomas | Terraced (freehold) | Apr 2023 | £146,500 | 
| Terraced (freehold) | Sep 2007 | £110,000 | |
| Terraced (freehold) | Jun 2005 | £92,000 | |
| Terraced (freehold) | Oct 1999 | £37,000 | |
| Terraced (freehold) | Dec 1996 | £27,000 | |
| 31 Mary Street, Trethomas | Terraced (freehold) | Apr 2022 | £138,500 | 
| Terraced (freehold) | Feb 2013 | £100,000 | |
| Terraced (freehold) | Feb 1999 | £40,000 |