| Postcode | CF81 9HT | 
|---|---|
| Post Town | Bargoed | 
| Nearest station | Tir-Phil (2 km) | 
| Bus stops | 
                       Library (NW) 
Darran Hotel (SW) 
Darran Hotel (NE) 
Bailey Street (NW) 
New Road (SE) 
Bargoed Terrace (S) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 37 View | 
| Known addresses | 
                       Brooklands, Bailey Street, Deri 
                            Glyn March House, 5 Bailey Street, Deri 
                            Gwel Y Cwm, Bailey Street, Deri 
                            Oaklands, Bailey Street, Deri 
                            Ty Carreg, Bailey Street, Deri 
                            Ysgwyddgwyn Ganol, Bailey Street, Deri 
                            2 Bailey Street, Deri 
                            3 Bailey Street, Deri 
                            4 Bailey Street, Deri 
                            6 Bailey Street, Deri 
                            8 Bailey Street, Deri 
                            9 Bailey Street, Deri 
                            11 Bailey Street, Deri 
                            13 Bailey Street, Deri 
                            14 Bailey Street, Deri 
                            19 Bailey Street, Deri 
                            20 Bailey Street, Deri 
                            21 Bailey Street, Deri 
                            26 Bailey Street, Deri 
                       | 
                  
| Main property type | Terraced | 
| Businesses | 
| Latitude | 51.708658 | |
|---|---|---|
| Longitude | -3.265318 | |
| Easting | 312668 | |
| Northing | 201861 | |
| Grid reference | SO126018 | |
| UTM reference | 30U 481667 5728668 | |
| what3words | weaved.ramp.encroach | |
| FixPhrase | crinkly lurch scorn unwary | |
| Plus code | 9C3RPP5M+FV | |
| Altitude | 246 metres (807 feet) | |
| Sunrise (today) | 7:13 | |
| Sunset (today) | 16:42 | |
| Distance away | ||
| Distance to sea | 26.3 KMs (16.3 miles) | 
| Parish | Darran Valley | W04000735 | 
|---|---|---|
| Ward | Darran Valley | W05001657 | 
| Unitary Authority | Caerphilly | W06000018 | 
| County | Gwent | W11000003 | 
| Constituency (2024) | Blaenau Gwent and Rhymney | W07000084 | 
| MP | Nick Smith | 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 | July 1995 | 
|---|---|
| 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) | 71 | |
|---|---|---|
| Households (2011) | 29 | |
| 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 | |
| Built up area (2024) | Deri | W45001056 | 
| Census output area (2021) | W00007130 | |
| Census output area (2011) | 1B1 | |
| Lower layer super output area (2021) | Caerphilly 002A | W01001360 | 
| Lower layer super output area (2011) | Caerphilly 002A | W01001360 | 
| Middle layer super output area (2021) | New Tredegar & Darren Valley | W02000291 | 
| Middle layer super output area (2011) | New Tredegar & Darren Valley | W02000291 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Cardiff | £222,873 | 
|---|---|
| Annual change | 2.8% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 11 Bailey Street, Deri | Terraced (freehold) | May 2025 | £96,000 | 
| Terraced (freehold) | May 2018 | £85,995 | |
| Terraced (freehold) | Dec 2015 | £100,000 | |
| Semi-detached (freehold) | May 2001 | £30,000 | |
| 3 Bailey Street, Deri | Terraced (freehold) | Mar 2023 | £103,000 | 
| Terraced (freehold) | Feb 2019 | £68,000 | |
| Terraced (freehold) | Mar 2007 | £80,000 | |
| 6 Bailey Street, Deri | Semi-detached (freehold) | Apr 2022 | £144,000 | 
| 9 Bailey Street, Deri | Semi-detached (freehold) | Jul 2021 | £89,950 | 
| Semi-detached (freehold) | Oct 2019 | £75,000 | |
| Semi-detached (freehold) | Mar 2008 | £75,000 | |
| 8 Bailey Street, Deri | Other (freehold) | Dec 2020 | £77,500 | 
| 14 Bailey Street, Deri | Terraced (freehold) | Feb 2020 | £110,000 | 
| Ty Carreg, Bailey Street, Deri | Detached (freehold) | Aug 2019 | £270,000 | 
| 26 Bailey Street, Deri | Semi-detached (freehold) | Jul 2019 | £145,000 | 
| 2 Bailey Street, Deri | Terraced (freehold) | Jul 2018 | £40,340 | 
| 19 Bailey Street, Deri | Terraced (freehold) | Jul 2016 | £39,995 |