Map
General Information
| Postal Area | Belfast |
| Postcode | BT1 1DN |
| User Type | Small (less than 25 items of mail per day) |
| Region | — |
| Country | Northern Ireland |
| Local authority | Belfast |
| Introduction Date | 1984-12-01 |
Geographic Information
| Latitude | 54.6032300 |
| Longitude | -5.9309340 |
| Easting | 333755 |
| Northing | 374746 |
| Quality | Within the building of the matched address closest to the postcode mean |