Map
General Information
| Postal Area | County Durham |
| Postcode | DH1 3XX |
| User Type | Large (more than 25 items of mail per day) |
| Region | North East |
| Country | England |
| Local authority | County Durham |
| Introduction Date | 1995-07-01 |
| Termination Date | 1997-07-01 |
Geographic Information
| Latitude | 54.7805890 |
| Longitude | -1.5730020 |
| Easting | 427562 |
| Northing | 542937 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |