Map
General Information
| Postal Area | Monmouthshire |
| Postcode | NP11 4GX |
| User Type | Small (less than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Caerphilly |
| Introduction Date | 1999-06-01 |
Geographic Information
| Latitude | 51.6634610 |
| Longitude | -3.1544790 |
| Easting | 320247 |
| Northing | 196707 |
| Quality | Within the building of the matched address closest to the postcode mean |