Map
General Information
| Postal Area | Southend-on-Sea |
| Postcode | SS1 1SJ |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Southend-on-Sea |
| Introduction Date | 1996-12-01 |
| Termination Date | 2009-06-01 |
Geographic Information
| Latitude | 51.5404370 |
| Longitude | 0.7128360 |
| Easting | 588225 |
| Northing | 185881 |
| Quality | Within the building of the matched address closest to the postcode mean |