Map
General Information
| Postal Area | County Durham |
| Postcode | DL1 4YU |
| User Type | Large (more than 25 items of mail per day) |
| Region | North East |
| Country | England |
| Local authority | Darlington |
| Introduction Date | 1990-02-01 |
| Termination Date | 1992-12-01 |
| IMD 2025 | Decile 1 (most deprived = 1, least = 10) Rank 2,923 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 54.5204170 |
| Longitude | -1.5396000 |
| Easting | 429900 |
| Northing | 514000 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |