Map
General Information
| Postal Area | Southend-on-Sea |
| Postcode | SS9 4WT |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Southend-on-Sea |
| Introduction Date | 2002-06-01 |
| Termination Date | 2003-05-01 |
| IMD 2025 | Decile 6 (most deprived = 1, least = 10) Rank 18,579 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 51.5658810 |
| Longitude | 0.6406540 |
| Easting | 583118 |
| Northing | 188527 |
| Quality | Imputed by ONS, by reference to surrounding postcode grid references |