Map
General Information
| Postal Area | County Durham |
| Postcode | DL9 4YU |
| User Type | Large (more than 25 items of mail per day) |
| Region | Yorkshire and The Humber |
| Country | England |
| Local authority | — |
| Introduction Date | 1997-12-01 |
| Termination Date | 1998-12-01 |
Geographic Information
| Latitude | 54.3771640 |
| Longitude | -1.7034030 |
| Easting | 419364 |
| Northing | 498003 |
| Quality | Postcode sector mean, (mainly PO Boxes) |