| Postcode | NP26 3EQ | 
|---|---|
| Post Town | Caldicot | 
| Nearest station | Severn Tunnel Junction (3 km) | 
| Bus stops | Memorial Hall (SW) Memorial Hall (NE) Police House (SE) Dancing Close (SW) Withy Walk (SE) Dancing Close (E) | 
| Roads in this postcode | |
| Number of UPRNs | 18 View | 
| Known addresses | Dinch Hill Farmhouse, Undy Greystones, Undy Ivy Cottage, Undy Mill Cottage, Undy Myrtle Cottage, Undy Reliance House, Undy | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.581132 | |
|---|---|---|
| Longitude | -2.828031 | |
| Easting | 342722 | |
| Northing | 187244 | |
| Grid reference | ST427872 | |
| UTM reference | 30U 511915 5714466 | |
| what3words | skins.shadow.squirts | |
| FixPhrase | cringing lushly stride thinner | |
| Plus code | 9C3VH5JC+FQ | |
| Altitude | 10 metres (33 feet) | |
| Sunrise (today) | 7:04 | |
| Sunset (today) | 16:47 | |
| Distance away | ||
| Distance to sea | 3.1 KMs (2 miles) | 
| Parish | Magor with Undy | W04001073 | 
|---|---|---|
| Ward | Magor East with Undy | W05001782 | 
| Unitary Authority | Monmouthshire | W06000021 | 
| County | Gwent | W11000003 | 
| Constituency (2024) | Monmouthshire | W07000101 | 
| MP | Catherine Fookes | Labour | 
| Police force | Gwent | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Monmouthshire and Newport | |
| 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) | 26 | |
|---|---|---|
| Households (2011) | 13 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Larger rural: Nearer to a major town or city | |
| Rural/urban (2011) | Rural town and fringe | |
| Built up area (2024) | Undy and Magor | W45001180 | 
| Census output area (2021) | W00008191 | |
| Census output area (2011) | 1B2 | |
| Lower layer super output area (2021) | Monmouthshire 011B | W01001573 | 
| Lower layer super output area (2011) | Monmouthshire 011B | W01001573 | 
| Middle layer super output area (2021) | Magor & Rogiet | W02000346 | 
| Middle layer super output area (2011) | Magor & Rogiet | W02000346 | 
| Travel to work area | Newport | K01000013 | 
| Average property price in Newport | £221,300 | 
|---|---|
| Annual change | 2.7% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Dinch Hill Farmhouse, Undy | Detached (freehold) | Feb 2023 | £365,000 | 
| Detached (freehold) | Dec 2004 | £249,275 | |
| Detached (freehold) | Apr 2000 | £127,000 | |
| Reliance House, Undy | Other (freehold) | Oct 2014 | £223,500 | 
| Ivy Cottage, Undy | Detached (freehold) | Jun 2014 | £325,000 | 
| Mill Cottage, Undy | Detached (freehold) | Jul 2012 | £132,000 | 
| Greystones, Undy | Detached (freehold) | Jan 2011 | £124,000 | 
| Myrtle Cottage, Undy | Semi-detached (freehold) | Jul 2009 | £220,000 |