Map
General Information
| Postal Area | Belfast |
| Postcode | BT1 3NX |
| User Type | Large (more than 25 items of mail per day) |
| Region | — |
| Country | Northern Ireland |
| Local authority | Belfast |
| Introduction Date | 1984-12-01 |
| Termination Date | 2005-08-01 |
Geographic Information
| Latitude | 54.5952770 |
| Longitude | -5.9172250 |
| Easting | 334667 |
| Northing | 373887 |
| Quality | Imputed by ONS, by reference to surrounding postcode grid references |