| Postcode | NP12 0QP | 
|---|---|
| Post Town | Blackwood | 
| Nearest station | Brithdir (2 km) | 
| Bus stops | Abernant Crescent (NW) Institute (NW) Institute (SE) Bryn Road (SW) Bryn Road (NE) Congregational Church (NW) | 
| Roads in this postcode | |
| Number of UPRNs | 26 View | 
| Known addresses | 44 James Street, Markham 46 James Street, Markham 50 James Street, Markham 56 James Street, Markham 60 James Street, Markham 64 James Street, Markham | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 51.701973 | |
|---|---|---|
| Longitude | -3.201341 | |
| Easting | 317076 | |
| Northing | 201042 | |
| Grid reference | SO170010 | |
| UTM reference | 30U 486086 5727910 | |
| what3words | offhand.scrapped.bands | |
| FixPhrase | crinkly lurch savings tasty | |
| Plus code | 9C3RPQ2X+QF | |
| Altitude | 287 metres (942 feet) | |
| Sunrise (today) | 7:06 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 22.8 KMs (14.2 miles) | 
| Parish | Argoed | W04000727 | 
|---|---|---|
| Ward | Argoed | W05001651 | 
| Unitary Authority | Caerphilly | W06000018 | 
| County | Gwent | W11000003 | 
| Constituency (2024) | Newport West and Islwyn | W07000105 | 
| MP | Ruth Jones | 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) | 57 | |
|---|---|---|
| Households (2011) | 25 | |
| 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 town and fringe | |
| Built up area (2024) | Markham | W45001062 | 
| Census output area (2021) | W00006999 | |
| Census output area (2011) | 8A2 | |
| Lower layer super output area (2021) | Caerphilly 005A | W01001334 | 
| Lower layer super output area (2011) | Caerphilly 005A | W01001334 | 
| Middle layer super output area (2021) | North Blackwood, Argoed & Markham | W02000294 | 
| Middle layer super output area (2011) | North Blackwood, Argoed & Markham | W02000294 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Newport | £221,300 | 
|---|---|
| Annual change | 2.7% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 64 James Street, Markham | Semi-detached (freehold) | Apr 2024 | £160,000 | 
| 56 James Street, Markham | Semi-detached (freehold) | Sep 2016 | £112,500 | 
| 44 James Street, Markham | Semi-detached (freehold) | Apr 2015 | £80,000 | 
| 46 James Street, Markham | Semi-detached (freehold) | Mar 2015 | £85,000 | 
| Terraced (freehold) | Jun 2007 | £118,000 | |
| 60 James Street, Markham | Semi-detached (freehold) | Jul 2012 | £85,000 | 
| 50 James Street, Markham | Semi-detached (freehold) | Mar 2001 | £37,000 | 
| Semi-detached (freehold) | Jul 1996 | £37,000 |