All postcodes in SS9 4
| Postcode | Place | Type |
|---|---|---|
| SS9 4SQ | Southend-on-Sea | street |
| SS9 4SR | Southend-on-Sea | street |
| SS9 4ST | Southend-on-Sea | street |
| SS9 4SU | Southend-on-Sea | street |
| SS9 4SW | Southend-on-Sea | street |
| SS9 4SX | Southend-on-Sea | street |
| SS9 4SY | Southend-on-Sea | street |
| SS9 4SZ | Southend-on-Sea | street |
| SS9 4TA | Southend-on-Sea | street |
| SS9 4TB | Southend-on-Sea | street |
| SS9 4TD | Southend-on-Sea | street |
| SS9 4TE | Southend-on-Sea | street |
| SS9 4TF | Southend-on-Sea | street |
| SS9 4TG | Southend-on-Sea | street |
| SS9 4TH | Southend-on-Sea | street |
| SS9 4TJ | Southend-on-Sea | street |
| SS9 4TL | Southend-on-Sea | street |
| SS9 4TN | Southend-on-Sea | street |
| SS9 4TP | Southend-on-Sea | street |
| SS9 4TQ | Southend-on-Sea | street |
| SS9 4TR | Southend-on-Sea | street |
| SS9 4TS | Southend-on-Sea | street |
| SS9 4TT | Southend-on-Sea | street |
| SS9 4TU | Southend-on-Sea | street |
| SS9 4TW | Southend-on-Sea | street |
| SS9 4UH | Leigh-on-Sea | street |
| SS9 4UT | Southend-on-Sea | street |
| SS9 4XX | Southend-on-Sea | large user |
Places in sector SS9 4
- Southend-on-Sea 123
- Leigh-on-Sea 84