Map
General Information
| Postal Area | Southend-on-Sea |
| Postcode | SS9 4SA |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Southend-on-Sea |
| Introduction Date | 1991-09-01 |
| Termination Date | 2005-04-01 |
| IMD 2025 | Decile 6 (most deprived = 1, least = 10) Rank 18,579 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 51.5660330 |
| Longitude | 0.6387290 |
| Easting | 582984 |
| Northing | 188539 |
| Quality | Within the building of the matched address closest to the postcode mean |