Map
General Information
| Postal Area | Southend-on-Sea |
| Postcode | SS99 9WN |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Southend-on-Sea |
| Introduction Date | 2009-07-01 |
| Termination Date | 2009-08-01 |
| IMD 2025 | Decile 2 (most deprived = 1, least = 10) Rank 5,623 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 51.5435230 |
| Longitude | 0.7123700 |
| Easting | 588180 |
| Northing | 186223 |
| Quality | Imputed by ONS, by reference to surrounding postcode grid references |