Map
General Information
| Postal Area | County Durham |
| Postcode | DH1 1YL |
| User Type | Large (more than 25 items of mail per day) |
| Region | North East |
| Country | England |
| Local authority | County Durham |
| Introduction Date | 1986-07-01 |
| Termination Date | 1995-12-01 |
Geographic Information
| Latitude | 54.7668240 |
| Longitude | -1.5865440 |
| Easting | 426700 |
| Northing | 541400 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |