Map
General Information
| Postal Area | Belfast |
| Postcode | BT1 1JN |
| 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 | 54.6014500 |
| Longitude | -5.9324330 |
| Easting | 333664 |
| Northing | 374545 |
| Quality | Within the building of the matched address closest to the postcode mean |