Map
General Information
| Postal Area | Monmouthshire |
| Postcode | NP11 3YU |
| User Type | Large (more than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Caerphilly |
| Introduction Date | 1999-06-01 |
| Termination Date | 2000-06-01 |
Geographic Information
| Latitude | 51.6849480 |
| Longitude | -3.1511930 |
| Easting | 320512 |
| Northing | 199093 |
| Quality | Postcode sector mean, (mainly PO Boxes) |